STU + GT2 + T3 + T2 at Buttonwillow Raceway Park

2023-03-01 T2 Honda Civic Type R Tire Size Increase

#33672 from Marty Grand · Rule change · TB 23-03 (2023-03 Fastrack)

In T2 Spec Lines, Honda Civic Type-R (2017-), change Tire Size as follows:
"275 295"

2023-03-01 T3 T3 Boxster S GCR request

#33687 from Kelly Peebles · Rule change · TB 23-03 (2023-03 Fastrack)

In T3 Spec Lines, Porsche Spec Boxster, change Notes as follows:
"Must conform to all SPB rules in the PCA rulebook. Each competitor shall have available definitive current documentation of the
PCA rules. Tires must meet 2016 Current SPB rules or any 245 DOT tire permitted. No other touring allowances permitted."

Applies to Porsche 986 Boxster on this page: Reto Eberle

2023-03-01 T3 OEM VW Steering Spindle Replacements 06-10 VW GTI and Jetta

#33732 from Aaron Stehly · Rule change · TB 23-03 (2023-03 Fastrack)

In T3 Spec Lines, Volkswagen GTI, Jetta GLI (06-10), add to Notes the following:
"VW knuckles 3C0407253F (L) and 3C0407254F (R) permitted."

2023-03-01 STU E&O STU NA Weight Chart.

#33737 from Eric Heinrich · Rule change · TB 23-03 (2023-03 Fastrack)

In STU, GCR Section 9.1.4.1.H.1. chart, Factory Engine Displacement (cc) Minimum Weight (lbs), change as follows:
"2450 2596 2595"
"2600 2860 2710"

2023-03-01 T3 BMW 320I intercooler

#33762 from Chi Ho · Rule change · TB 23-03 (2023-03 Fastrack)

In T3 Spec Lines, BMW- 320I, add to Notes the following:
"Aftermarket intercooler permitted."

2023-04-01 T3 Request to all ECS Tuning inner-cooler to 06-10 VW GTI spec

#33769 from Allen Briere · Rule change · TB 23-04 (2023-04 Fastrack)

In T3 Spec Lines, Volkswagen GTI, Jetta GLI (06-10), add to notes as follows:
"Performance alternative intercooler allowed."
33888

2023-04-01 GT2 Adding Ginetta G56 GTA Factory ProTune for GT2 Class

#33825 from Robert Mueller · Rule change · TB 23-04 (2023-04 Fastrack)

In GT Cars - Ginetta, Ginetta G56 GTA, add to Notes as follows:
"May use Factory installed ProMap ECU Map."

2023-04-01 STU Alternate OEM Miata Intake Manifold

#33827 from Brandon Steinhauer · Rule change · TB 23-04 (2023-04 Fastrack)

In STU Spec lines, classify Mazda BP5A as follows:
STU Maximum Displacement (cc's) Minimum Weight Notes
Mazda BP5A 1839 Chart May use engine in its entirety or specific
components from the engine.

2023-04-01 T2 Allowance of any nonmetallic bushing material in T2

#33833 from Tyler Quance · Rule change · TB 23-04 (2023-04 Fastrack)

In Touring (T2-T5) Category Specifications, GCR Section 9.1.9.2.D.5.c.1., change as follows:
"All T2-T3 cars are allowed to replace OEM upper and lower control arm bushings with polyurethane, or delrin, or alternate
synthetic materialbushings."

2023-04-01 T2 Allow Adjustable stabilizer bar links

#33861 from John Heinricy · Rule change · TB 23-04 (2023-04 Fastrack)

In T2 Spec Lines, Cadillac CT4-V Blackwing (2022-), add to Notes as follows:
"Adjustable sway bar end links permitted."

2023-05-01 T2 C5 Z06 Straight Line Speed

#33575 from Charlie Abell · Rule change · TB 23-05 (2023-05 Fastrack)

In T2 Spec Lines, Chevrolet Corvette C-5 Incl. Fxd Cpe (98-04) Z06 (hardtop) (01-04), change Weight (lbs) as follows:
"3425 w/53mm 56mm flat plate restrictor)
3350 (w/58mm flat plate restrictor, only permitted when using OEM Wheels and Stock Brakes)"

Applies to Chevrolet Corvette on this page: Josh Carroll, David Holmes, Patrick Howe, Evan Gold, Greg Nester, Michael Cheney, Luis Martinez

2023-05-01 GT2 Request to class 2011 Porsche Cayman S

#33771 from Coyote Black · Rule change · TB 23-05 (2023-05 Fastrack)

In GT Cars - Porsche, classify Porsche Cayman ‘S’ as follows:
GT Cars - Porsche
Model Years Body Style Drive-
line
Wheel-
base (in)
Notes
Porsche Cayman ‘S’ 09-12 2 dr. Coupe RWD 95.08 3.4L No PDK Transmission

2023-05-01 GT2 Please classify Fields Cardinal V8

#33784 from James Rogersn · Rule change · TB 23-05 (2023-05 Fastrack)

In GT Spec Lines, GT1 Cars - Fields Cardinal, classify Fields Cardinal V8 as follows:
GT1 Cars – Fields Cardinal
Model Years Body Style Drive-
line
Wheel-
base (in)
Notes
Fields Cardinal V8 2023 2 Dr. RWD 92.0 Roll Cage MUST be modified to comply with

A specification table follows in the original; it is not shown here.

2023-05-01 T3 Request Spec E46 in T3 Weight Adjustment

#33897 from Gamaliel Aguilar-Gamez · Rule change · TB 23-05 (2023-05 Fastrack)

In T3 Spec Lines, BMW SpecE46, change Weight (lbs) as follows:
"2950 2925"

2023-05-01 T3 E36 2.5L 323is Weight Reduction

#33975 from Skylar McKnight · Rule change · TB 23-05 (2023-05 Fastrack)

In T3 Spec Lines, BMW 323Ci/Is (98-00), change Weight (lbs) as follows:
"3100
3000 2750"

2023-05-01 T3 Update SpecE46 Spec Line to Current SpecE46 Ruleset

#34016 from Nathan Gess · Rule change · TB 23-05 (2023-05 Fastrack)

In T3 Spec Lines, BMW SpecE46, change Notes as follows:
"Must conform to all SpecE46 rules Version 2.7. 2.10."

2023-06-01 T3 S550 Reconcile With S197

#34093 from Scotty B White · Rule change · TB 23-06 (2023-06 Fastrack)

In T3 Spec Lines, Ford Mustang V6 (15-17), change as follows:
Final Drive: "3.31 or 3.55 w/ auto"
Weight: "3475 3400"
Notes: "58mm flat plate restrictor required. Rear spring relocated to shock allowed. 800lbs springs (F/R) allowed. Track package
allowed. Optional: 6 speed automatic transmission (with paddle shifters). Sway bars allowed up to 35 38mm (F) 25 28mm (R).
Ford Motorsports 6-piston M2300V 380mm brake kit allowed with +175lb+100lb penalty, or optional 2-piece rotor 355mmmax
Brembo brake kit #M-2300-S allowed with +100lb+50lb penalty."

Applies to Ford Mustang on this page: Scotty B White, Roger Eagleton, Matt Lituchy, Michael Lowe, Rick Luckett

2023-06-01 T2 2009 Porsche Cayman Classing Request

#34147 from Lisa Hunsicker · Rule change · TB 23-06 (2023-06 Fastrack)

In T2 Spec Lines, Porsche Cayman S (06-08), change year as follows:
"Porsche Cayman S (06-08) (06-09)"

2023-06-01 T3 SE46 Parity Help

#34178 from Derek Chan · Rule change · TB 23-06 (2023-06 Fastrack)

In T3 Spec Lines, BMW SpecE46, change weight as follows:
"2950 2900"

2023-06-01 T3 2022 Toyota GR Cup for T3 discussion

#34234 from Touring Committee · Rule change · TB 23-06 (2023-06 Fastrack)

In T3 Spec Lines, Toyota GR Cup (2022-), classify as follows:

A specification table follows in the original; it is not shown here.

2023-07-01 T3 2016+ Camaro 1LE - Max Wheel Diameter

#34003 from Nicolas Hammann · Rule change · TB 23-06 (2023-05 Fastrack)

In T3 Spec Lines, Chevrolet Camaro V6 1LE (2016-), change Max. Wheel Size as follows:
"18 x 10 20 x 10"
In T3 Spec Lines, Chevrolet Camaro LT-I4 Turbo 1LE (2016-), change Max. Wheel Size as follows:
"18 x 10 20 x 10"

2023-07-01 GT2 appendix letter #33635

#34206 from Ian Barberi · Rule change · TB 23-06 (2023-07 Fastrack)

In GT2-ST Spec Lines, BMW E46 M3 & E36 / BMW Z3 / BMW 5000cc V8, change notes as follows:
"The 3.4 liter 6 cyl. (87.0 bore x 93.0 stroke) is permitted at 2575lbs. 4.0L V8 permitted at 2900lbs. 4.5L V8 permitted at 2950lbs.
5.0L V8 permitted at 3000lbs. Flossman body kit permitted as found at http://www.racingpartsbmw.de/start/eng/start.htm.
Trans Am SGT spec: Regular shifter 3000 lbs., paddle shifter plus 150 lbs. 95mm S54 crankshaft @ +150lbs. Lang Racing part#
S54-95mm-StrokerCrk.
S54 engine is permitted a 97mm stroke crankshaft (part #VAC-SC-S54) @2800lbs."

2023-07-01 T2 370Z Obsolete Parts & NISMO Alternatives to SPL Parts

#34297 from Zach Hayward · Rule change · TB 23-06 (2023-05 Fastrack)

In T2 Spec Lines, Nissan 370Z (09-17) / 370Z NISMO Edition (09-17), change Notes as follows:
5300S-SS370 T-2 spring kit allowed; 54600-SS370 T-2 front and rear sway bar kit allowed. Sway Bars allowed 35mm (f). 29mm
(r). Sports Package is allowed. Springs up to 1000 lbs/in front and rear allowed. 54010- SZ350 (F) and 55020-SZ350 (R) allowed.
Cold Air Intake allowed. Performance Alternative Header permitted - Part #14002-SS370. Rear spring relocation permitted to
allow coil over shocks. SPL suspension kit permitted that includes: rear camber arms #SPL RLL Z34 or Nismo 551A0-RLLRZ, SPL
rear toe arms #SPL RTA Z34, SPL rear traction arms #SPL RTR Z34 or Nismo 55110-RTRRZ, SPL front camber arms #SPL FUA Z34 or
54525-FUAZ4, SPL rear mid link #SPL RML Z34 or Nismo 551B0-RMLZ4. Zspeed and Z1 alternative clutch slave permitted. The
following STOPTECH parts are allowed with a 50 Lb penalty: #83.488.6800.51 front, 83.657.0057.51 rear.

2023-07-01 GT2 Remove Weight and Restrictor Penalty for Corvette C7 Body

#34342 from Jorge A Nazario · Rule change · TB 23-06 (2023-07 Fastrack)

In GT2/ST, Chevrolet Corvette (2014-2019) change as follows:
Restrictor: "73 7mm flat plate"

2023-07-01 T3 2022 Toyota GR Cup for T3

#34448 from Club Racing Board · Rule change · TB 23-06 (2023-05 Fastrack)

In T3 Spec Lines, remove Toyota 2022-up GR Cup in its entirety.
In T3 Spec Lines, remove Toyota 2022-up GR86 Cup in its entirety.

2023-07-01 STU 2022 Toyota GR Cup for STU

#34449 from Club Racing Board · Rule change · TB 23-06 (2023-05 Fastrack)

In STU Spec Lines, Toyota GR Cup (2022-), classify as follows:

A specification table follows in the original; it is not shown here.

2023-08-01 T3 Rules Clarification for Mazda RX8 Spec Line

#34395 from Colin Koehler · Rule change · TB 23-08 (2023-08 Fastrack)

In T3 Spec Lines, Mazda RX-8 Base/R3/Sport/ GT (04-12), change notes as follows:
"Use of 2009 R3 transmission is permitted with alternate gear ratios as listed. R3 transmission must be paired with the listed
alternate final drive. Front sway bar permitted 32mm MAX rear sway bar 19 MAX, Front springs max 750, 500 rear. Cold air
intake permitted. Header permitted. Aftermarket flywheel and single disc clutch permitted with no weight penalty."
In T4 Spec Lines, Mazda RX-8 Base/R3/Sport/ GT (04-12), change notes as follows:
"Mazdaspeed radiator #0000-01-8501 allowed. Use of 2009 R3 transmission is permitted with alternate gear ratios as listed. R3
transmission must be paired with the listed alternate final drive. Mazdaspeed coil spring kit #QSEA-34-01Z allowed. 60mm flat
plate restrictor required. OE Rear spoiler allowed #F151-V4-920F. OE front air dam allowed #F151-V4-900f-BB. Springs Allowed:

2023-08-01 T2 Rules Clarification for Mazda RX8 Spec Line

#34395 from Colin Koehler · Rule change · TB 23-08 (2023-08 Fastrack)

In T3 Spec Lines, Mazda RX-8 Base/R3/Sport/ GT (04-12), change notes as follows:
"Use of 2009 R3 transmission is permitted with alternate gear ratios as listed. R3 transmission must be paired with the listed
alternate final drive. Front sway bar permitted 32mm MAX rear sway bar 19 MAX, Front springs max 750, 500 rear. Cold air
intake permitted. Header permitted. Aftermarket flywheel and single disc clutch permitted with no weight penalty."
In T4 Spec Lines, Mazda RX-8 Base/R3/Sport/ GT (04-12), change notes as follows:
"Mazdaspeed radiator #0000-01-8501 allowed. Use of 2009 R3 transmission is permitted with alternate gear ratios as listed. R3
transmission must be paired with the listed alternate final drive. Mazdaspeed coil spring kit #QSEA-34-01Z allowed. 60mm flat
plate restrictor required. OE Rear spoiler allowed #F151-V4-920F. OE front air dam allowed #F151-V4-900f-BB. Springs Allowed:

2023-08-01 T3 2012-2013 Golf R - added to T3

#34413 from Allen Briere · Rule change · TB 23-08 (2023-05 Fastrack)

In T3 Spec Lines, Volkswagen Golf R (12-13), classify as follows:

A specification table follows in the original; it is not shown here.

2023-08-01 T3 rule book corrections

#34437 from Chi Ho · Rule change · TB 23-08 (2023-08 Fastrack)

In T3 Spec Lines, BMW 320i (14-15), add to Notes the following:
"Aftermarket intercooler permitted."
In T4 Spec Lines, BMW 320i (14-15), remove from Notes the following:
"Aftermarket intercooler permitted."

2023-08-01 T2 rule book corrections

#34437 from Chi Ho · Rule change · TB 23-08 (2023-08 Fastrack)

In T3 Spec Lines, BMW 320i (14-15), add to Notes the following:
"Aftermarket intercooler permitted."
In T4 Spec Lines, BMW 320i (14-15), remove from Notes the following:
"Aftermarket intercooler permitted."

2023-08-01 T2 Corvette LS2 Restrictor Plate Adjustment

#34456 from Brian LaCroix · Rule change · TB 23-08 (2023-05 Fastrack)

In T2 Spec Lines, Chevrolet Corvette C6 Coupe / Grand Sport (05-13), change Notes as follows:
"LS2: 58mm 60mm flat plate restrictor is required."

2023-08-01 T3 Allowing 255 Tire Width for Nissan 350z

#34471 from Patrick price · Rule change · TB 23-08 (2023-08 Fastrack)

In T3 Spec Lines, Nissan 350Z Track/ Touring/ Standard/ Nismo (03-08), change Tire Size (max) as follows:
"245 255"
In T3 Spec Lines, Nissan 370Z (09-16) / 370Z NISMO Edition (09-13), change Tire Size (max) as follows:
"245 255"

2023-08-01 T3 Ride Height Correction for the T3 Solstice.

#34615 from Joe Aquilante · Rule change · TB 23-08 (2023-08 Fastrack)

In T2 Spec Lines, Pontiac Solstice GXP Coupe / Convertible (07-09), add to Notes the following:
"Minimum ride height is 3 inches."
In T3 Spec Lines, Pontiac Solstice GXP Coupe / Convertible (07-09), add to Notes the following:
"Minimum ride height is 3 inches."

2023-08-01 T2 Ride Height Correction for the T3 Solstice.

#34615 from Joe Aquilante · Rule change · TB 23-08 (2023-08 Fastrack)

In T2 Spec Lines, Pontiac Solstice GXP Coupe / Convertible (07-09), add to Notes the following:
"Minimum ride height is 3 inches."
In T3 Spec Lines, Pontiac Solstice GXP Coupe / Convertible (07-09), add to Notes the following:
"Minimum ride height is 3 inches."

2023-08-01 T2 Blacking Cadillac Fuel Capacity

#34624 from John Heinricy · Rule change · TB 23-08 (2023-05 Fastrack)

In T2 Spec Lines, Cadillac CT4-V Blackwing (2022-), add to Notes the following:
"Radium fuel surge tank permitted. Radium tank and all associated hoses must be located behind a fireproof bulkhead or in the
engine compartment."

2023-09-01 GT2 GT2 Mazda 20B 3 rotor ENO

#34765 from Grand Touring Committee · Rule change · TB 23-09 (2023-09 Fastrack)

In GT2 Spec Lines, Engines - MAZDA, combine both 20B to one spec lines and keep the following:
Weight: "2500 2280"
Notes: "Must run +100 lbs. for Grand Am transaxle and independent rear suspension. Must comply with all other GT2 rules."

2023-10-01 GT2 Late E & O

#34966 from Scotty B White · Rule change · TB 23-10 (2023-10 Fastrack)

RM 23-10 GT2-ST Dodge Viper, incl Comp Coupe, ACR/ACR-X VRL Front Fascia
As an Errors and omissions fix to what was originally intended for these cars, the Club Racing Board and Board of Directors have
approved the following:
In GT2-ST, Dodge Viper, incl Comp Coupe, ACR/ACR-X add VRL front fascia -100lbs to all Spec Lines.

2023-12-01 T3 2006-10 Volkswagen GTI - Weight Reduction request and KO4 Turbo

#34414 from Allen Briere · Rule change · TB 23-12 (2023-12 Fastrack)

In T3 Spec Lines, Volkswagen GTI, Jetta GLI (06-10), change Notes as follows:
"Turbo Inlet Restrictor 36mm 37mm"

2023-12-01 GT2 Errors in GTCS Headings and Use of the Terms Category and ClassChange existing GTL and GTA Rules

#34453 from David Gomberg · Rule change · TB 23-12 (2023-12 Fastrack)

from the current (or before) Table of Contents (TOC), to what is shown in the after TOC.
GTL spec lines will now be contiguous with GT2 and 3 spec lines.
GTA category and spec lines will be moved and renumbered behind GTL. GTA Section will not change but page numbers will, (as
shown in Red italics).
9.1.2.F. GT-2, 3, LITE Category Specifications 314
GT2 Cars 327
GT2/ST 341
GT3 Cars 348

2023-12-01 T3 Adding Model Years to T3 Golf R Spec Line

#34612 from Aaron Stehly · Rule change · TB 23-12 (2023-12 Fastrack)

In T3 Spec Lines, Volkswagen Golf R (15-16), change year as follows:
"(15- 16 18)"

2023-12-01 T3 Rear Camber Arms for T3 VW Golf R

#34613 from Aaron Stehly · Rule change · TB 23-12 (2023-12 Fastrack)

In T3 Spec Lines, Volkswagen Golf R (15-16), add to Notes the following:
"Verkline WAS-048 camber arms permitted."

2023-12-01 T3 Classing Spec E90 Cars in SCCA

#34791 from Ben Phillips · Rule change · TB 23-12 (2023-12 Fastrack)

In T3 Spec Lines, classify BMW Spec E9X as follows:

A specification table follows in the original; it is not shown here.

2023-12-01 T3 Porsche Cayman Transmissions and Ratios

#34891 from Todd Lamb · Rule change · TB 23-12 (2023-09 Fastrack)

In T3 Spec Lines, change gear ratios and final drive ratios as follows:

A specification table follows in the original; it is not shown here.

2023-12-01 T3 TIR location requirement in VW Golf Spec lines

#35048 from Allen Briere · Rule change · TB 23-12 (2023-12 Fastrack)

In T3 Spec Lines, Volkswagen GTI (2013), change Notes as follows:
"Rear sway bar max 42 mm (body and suspension mounting same as OEM), Any spring up to a maximum spring rate of 800
pounds may be used. Turbo Inlet Restrictor 36mm required max 60mm from impeller. R32 model brake package allowed.
Verkline WAS-048 camber arms permitted."
In T3 Spec Lines, Volkswagen Golf R (15-16) change Notes as follows:
"Max spring rate 800 F&R, Max swaybar 38mm F, 42mm R. 36mm TIR required max 60mm from impeller."

2023-12-01 T2 M2 CS RACING

#35122 from Clark Giguiere · Rule change · TB 23-12 (2023-12 Fastrack)

In T2 Spec Lines, BMW M2 CS Cup 2020-, add to Notes the following:
"Hood vents conforming to 9.1.9.2.D.8.a.7 are permitted."

2024-01-01 T2 Rebalance Blackwing Cadillac T2

#35079 from John Heinricy · Rule change · TB 24-01 (2024-01 Fastrack)

In T2 Spec Lines, Cadillac CT4-V Blackwing (2022-), change as follows:
Wheel size: "(F) 18 x 10 (R) 18 x 11"
Notes: "Sway bars permitted 35mm (f), 30mm (r)"

2024-01-01 T3 T3 Solstice Brakes

#35106 from Joe Aquilante · Rule change · TB 24-01 (2024-01 Fastrack)

In T3 Spec Lines, Pontiac Solstice GXP Coupe / Convertible (07-09), change Brakes as follows:
"(F) 355 296 Vented (R) 270 Solid"

2024-01-01 T2 M2 CS RACING

#35130 from Clark Giguiere · Rule change · TB 24-01 (2024-01 Fastrack)

In T2 Spec Lines, BMW M2 CS Cup (2020-), change weight as follows:
"3600 3550"
In T2 Spec Lines, BMW M235iR (-2016), change weight as follows:
"3350 3300"

2024-01-01 T2 Spec Corvette in T2

#35139 from David Sanders · Rule change · TB 24-01 (2024-01 Fastrack)

In T2 Spec Lines, Spec Corvette, change as follows:
Weight: "3375 3200"
Notes: "Cars must comply with all Spec Corvette rules dated 3-1-2 1 11-28-22 including fuel and tires. No tire treatment or
rubber softeners are permitted. T2 requirements of 3.75” min ride height and 53mm flat plate restrictor required. Any 295 DOT
tire approved with +200lb. Limited to 380 HP. Nankang NS-2R Tires conforming to Spec Corvette rules are required."

2024-01-01 T2 T2 Viper BoP

#35155 from Scotty B White · Rule change · TB 24-01 (2024-01 Fastrack)

In T2 Spec Lines, Dodge Viper SRT-10 incl. coupe (03-06), change Tire Size as follows:
"(F) 315/35 (R) 345/30 335/30"

2024-01-01 T2 BOP Adjustment for 5.0L Mustangs

#35156 from Kurt Rezzetano · Rule change · TB 24-01 (2024-01 Fastrack)

In T2 Spec Lines, Ford Mustang GT 5.0L (11-14), change as follows:
Min weight: "3500 3575"
Notes: "58mm 60mm flat plate restrictor required."
In T2 Spec Lines, Ford Mustang GT 5.0L (15-17), change as follows:
Min Weight: "3600 3650"
Notes: "58mm 59mm flat plate restrictor required."
In T2 Spec Lines, Ford Mustang GT5.0L(2018-), change as follows:
Min Weight: "3600 3650"

Applies to Ford Mustang on this page: Scotty B White

2024-01-01 T2 Take at Look at T-2 BOP

#35161 from Joe Aquilante · Rule change · TB 24-01 (2024-01 Fastrack)

In T2 Spec Lines, Chevrolet Camaro, 1LE (2016-), change as follows:
Min Weight: "3550 3500"
Notes: "56mm 58mm flat plate restrictor required."

2024-01-01 T2 C5 Corvette Spec Line Oversight

#35169 from Carl Fung · Rule change · TB 24-01 (2024-01 Fastrack)

In T2 Spec Lines, Chevrolet Corvette C-5 Incl. Fxd Cpe (98-04) Z06 (hardtop) (01-04), change as follows:
Min Weight: :3425 w/56mm flat plate restrictor)"
Notes: "59mm flat plate restrictor required."
In T2 Spec Lines, Chevrolet Corvette C6 Coupe / Grand Sport (05-13) change Notes as follows:
"LS2: 60mm 63mm flat plate restrictor is required. LS3: 50mm 53mm flat plate restrictor is required."

Applies to Chevrolet Corvette on this page: Josh Carroll, David Holmes, Patrick Howe, Evan Gold, Greg Nester, Michael Cheney, Luis Martinez

2024-01-01 T3 350Z Parity Request

#35174 from Derek Chan · Rule change · TB 24-01 (2024-01 Fastrack)

In T3 Spec Lines, Nissan 350ZTrack/ Touring/Standard/Nismo(03-08), change as follows:
Weight: "DE Motor: 3200 3125 HR Motor: 3275"
Notes: "HR Engine: Two 44mm 47 mm flat plate restrictors required. DE engine: Cold air intake permitted."

2024-01-01 GT2 Dodge Viper Gen 3 hybrid Kit Update Request

#35200 from Sean McCann · Rule change · TB 24-01 (2024-01 Fastrack)

In GT2-ST Spec Lines, Dodge Viper, incl Comp Coupe, ACR/ ACR-X change NOTES as follows:
8300 OEM: "Stock OEM engine. Engine long block, valve train, and intake system must meet stock, shop manual specifications.
Hybrid update including Mopar Performance Part #P5156137. May use Mopar part #5038554AF (Gen 5 Intake Manifold
manifold allowed with (2) 55mm flat plates) and 8.4L mechanical throttle body allowed. VRL Front Fascia -100lbs."
8300: "Hybrid update including Mopar Performance Part # P5156137, Mopar part #5038554AF manifold and 8.4L mechanical
throttle body allowed using (2) 50 45mm flat plate restrictors. VRL Front Fascia –100lbs."
8400: "Intake and Throttle Body from Mopar Performance Part # P5156137allowed using (2) 50 45mm flat plate
restrictors. , Mopar part #5038554AF manifold (Gen 5 Intake Manifold allowed with (2) 50mm flat plates) VRL Front Fascia -

2024-01-01 T3 Requested Update of Model Years of 370Z

#35231 from Richard Kulach · Rule change · TB 24-01 (2024-01 Fastrack)

In T3 Spec Lines, Nissan 370Z (09-16) / 370Z NISMO Edition (09-13), change model as follows:
"Nissan 370Z (09-16) / 370Z NISMO Edition (09-13) ,incl. Nismo (2009-2022)"

2024-01-01 T2 Requested Update of Model Years of 370Z

#35231 from Richard Kulach · Rule change · TB 24-01 (2024-01 Fastrack)

In T3 Spec Lines, Nissan 370Z (09-16) / 370Z NISMO Edition (09-13), change model as follows:
"Nissan 370Z (09-16) / 370Z NISMO Edition (09-13) ,incl. Nismo (2009-2022)"

2024-01-01 T3 Update Request for 2010 Mustang GT 4.6

#35234 from David Woodle · Rule change · TB 24-01 (2024-01 Fastrack)

In T3 Spec Lines, Ford Mustang Coupe GT & Shelby GT 4.6L & Cal. Special (05-10), add to Notes the following:
"2010 models may update the front and rear fascia, hood and associated assemblies to the 2013-14 GT style."

Applies to Ford Mustang on this page: Scotty B White, Roger Eagleton, Matt Lituchy, Michael Lowe, Rick Luckett

2024-01-01 T3 SE46 Continued Parity/ Cold Air Intake request

#35267 from Christopher DeShong · Rule change · TB 24-01 (2024-01 Fastrack)

In T3 Spec Lines, BMW SpecE46, change as follows:
Min Weight: "2900 2850"
Notes: "Must conform to all SpecE46 rules Version 2.10. SpecE46 spec tire permitted or any DOT permitted up to 225 permitted.
No other touring allowances permitted. Engines may not be modified unless specified in the Spec E46 rules and must conform to
touring tech procedures. Driver must possess a current copy of the rules. Dyno results do not ensure engine compliance. SE46
HP limit does not apply."

2024-01-01 T3 Please help the Subaru STIs.

#35278 from Jared Lendrum · Rule change · TB 24-01 (2024-01 Fastrack)

In T3 Spec Lines, Subaru WRX STI (03-07), change Notes as follows:
"Killer B intake pipe #EJTI and coupler permitted. 37mm 39mm TIR required."
In T3 Spec Lines, Subaru STI (15-20), change as follows:
Min Weight: "3350 3450"
Notes: "Killer B intake pipe #EJTI and coupler permitted. 37mm 40mm TIR required."
In T3 Spec Lines, Subaru Legacy GT/Spec B (05-09), change Notes as follows:
"Killer B intake pipe #EJTI and coupler permitted. 37mm 39mm Turbo inlet restrictor required."

2024-02-01 STU ST Electric-Assisted Steering Systems

#35066 from Jose Osiris Pena · Rule change · TB 24-02 (2024-01 Fastrack)

In GCR, Section 9.1.4.M.16., change as follows:
"Power steering may be modified in any of the following ways:
a. disconnected , pump, belt, pulley, and hoses may be removed. Hoses may also be looped. Steering rack or box may be
modified internally to work without pump.
b. an OEM manual steering rack for that model may be fitted
c. an electric power steering pump may be fitted
d. an OEM electric-assisted steering system may be used or any column mounted electric steering assist may be used
e. an OEM hydraulic-assisted steering system may be used"

2024-02-01 T2 2015+ Mustang Sway Bar and A-Arm Request

#35154 from Scotty B White · Rule change · TB 24-02 (2024-01 Fastrack)

In T2 Spec Lines, Ford Mustang GT 5.0L (15-17), add to Notes the following:
"BMR rear upper control arm camber links part #UTCA064 permitted."

Applies to Ford Mustang on this page: Scotty B White

2024-02-01 T3 15-18 Golf R Alignment with Existing GTI and R Speclines

#35235 from Aaron Stehly · Rule change · TB 24-02 (2024-02 Fastrack)

In T3 Spec Lines, Volkswagen Golf R (15-18), change as follows:
Max Wheel Size: "18x8 9"
Max Tire Size: "245 255"

2024-02-01 T2 Brake Kits

#35245 from David Woodle · Rule change · TB 24-02 (2024-01 Fastrack)

In T2 Spec Lines, add to Notes the following:
Chevrolet Camaro SS (98-02): “Four or six piston front calipers allowed.”
Chevrolet Camaro, 1LE (2016-): “Four or six piston front calipers allowed.”
Chevrolet Corvette C-5 Incl. Fxd Cpe (98-04) Z06 (hardtop) (01-04): “Four or six piston front calipers allowed.”
Chevrolet Corvette C6 Coupe / Grand Sport (05-13): “Four or six piston front calipers allowed.”
Chevrolet Corvette Z06 (06-12): “Four or six piston front calipers allowed.”
Pontiac Firebird (98-02): “Four or six piston front calipers allowed.”
Pontiac Solstice GXP Coupe/Convertible (07-09): “Four or six piston front calipers allowed.”

2024-02-01 GT2 Rear Blade Spoiler Clarification

#35261 from Butch Kummer · Rule change · TB 24-02 (2024-01 Fastrack)

In GCR Section 9.1.2.G (GTA Category Specifications), change as follows:
“9.1.2.G.III.I
The single-plane rear spoiler must be mounted at an angel angle from 50 to 75 degrees (perpendicular to the ground
being 90 degrees) and may not extend beyond the rear bumper when viewed from directly above the rear
bumper. Spoilers must be a minimum of .063 aluminum or Lexan and may vary in overall height to match the contours
of the bodywork. The rear spoiler dimensions shall not exceed 59.0 inches wide by 5.0 inches in height, (measured on
the material surface) , or 295.0 square inches total surface area. Braces to prevent spoiler deflection are allowed, but
may serve no other purpose.”

2024-02-01 T3 More Car Lightening Stuff

#35319 from Scotty B White · Rule change · TB 24-02 (2024-02 Fastrack)

In GCR, Section 9.1.9.2.D.1.g.3., change as follows:
"Batteries may be replaced provided the replacement is capable of starting the car. Batteries may not be relocated
unless noted on the spec line. Batteries must be adequately secured. Battery labeling must conform to 9.3.35.D. with
those of an alternate manufacturer, provided they are of similar amp-hour capacity, size and within 10% of OEM
weight."

2024-02-01 T2 More Car Lightening Stuff

#35319 from Scotty B White · Rule change · TB 24-02 (2024-02 Fastrack)

In GCR, Section 9.1.9.2.D.1.g.3., change as follows:
"Batteries may be replaced provided the replacement is capable of starting the car. Batteries may not be relocated
unless noted on the spec line. Batteries must be adequately secured. Battery labeling must conform to 9.3.35.D. with
those of an alternate manufacturer, provided they are of similar amp-hour capacity, size and within 10% of OEM
weight."

2024-02-01 T3 Open Strut Tower Brace Options for Ford Mustang V6 (11-14)

#35322 from James Stacey · Rule change · TB 24-02 (2024-02 Fastrack)

In T3 Spec Line, Ford Mustang V6 (2011-2014), add to Notes as follows:
"Strut Tower Brace #M20201-F, Sway bar Kit #M-5490 or #AR3Z-16A200-A,"

Applies to Ford Mustang on this page: Scotty B White, Roger Eagleton, Matt Lituchy, Michael Lowe, Rick Luckett

2024-02-01 T3 Mustang ecoboost

#35351 from Mitchell Geltz · Rule change · TB 24-02 (2024-02 Fastrack)

In T3 Spec Lines, Ford Mustang EcoBoost (2015-), change Notes as follows:
"35mm 36mm TIR required"

Applies to Ford Mustang on this page: Scotty B White, Roger Eagleton, Matt Lituchy, Michael Lowe, Rick Luckett

2024-02-01 T3 Inclusion of B-C spec cars in T4

#35374 from Touring Committee · Rule change · TB 24-02 (2024-02 Fastrack)

In GCR, Section 9.1.9.2., change as follows:
"Touring car eligibility: Cars are eligible for the class they are listed with a specification line and with the specific
allowances permitted. In addition, T2-T4 cars may race one class up in touring classes above their specification line class
as long as they are a legal T2-T4 car and conform to their specification line allowances as classified. Cars conforming to
C-Spec rules are permitted to compete in Touring 4."

2024-02-01 T2 Inclusion of B-C spec cars in T4

#35374 from Touring Committee · Rule change · TB 24-02 (2024-02 Fastrack)

In GCR, Section 9.1.9.2., change as follows:
"Touring car eligibility: Cars are eligible for the class they are listed with a specification line and with the specific
allowances permitted. In addition, T2-T4 cars may race one class up in touring classes above their specification line class
as long as they are a legal T2-T4 car and conform to their specification line allowances as classified. Cars conforming to
C-Spec rules are permitted to compete in Touring 4."

2024-02-01 T2 Runoffs wording on Caddy in T2

#35377 from Touring Committee · Rule change · TB 24-02 (2024-01 Fastrack)

In T2 Spec Lines, Cadillac CT4-V Blackwing(2022-), change Notes as follows:
"THIS CAR DOES NOT QUALIFY FOR SCCA RUNOFFS COMPETITION UNTIL IT HAS BEENREPRESENTED IN 3 SCCA SUPER
TOUR EVENTS."

2024-02-01 T3 T2-T4 Set expiration dates on spec lines

#35378 from Touring Committee · Rule change · TB 24-02 (2024-02 Fastrack)

In T2-T4 Spec Lines, add **This Spec line will expire 12/31/24, Please submit to appeal**
to Notes to the following Spec Lines:
T2:
Acura TL SHAWD (10-13)
Audi S4 (12-14)
Audi S5 (13-14)
Audi TT RS (2018-)
Cadillac ATS-V (16-17)

2024-02-01 T2 T2-T4 Set expiration dates on spec lines

#35378 from Touring Committee · Rule change · TB 24-02 (2024-02 Fastrack)

In T2-T4 Spec Lines, add **This Spec line will expire 12/31/24, Please submit to appeal**
to Notes to the following Spec Lines:
T2:
Acura TL SHAWD (10-13)
Audi S4 (12-14)
Audi S5 (13-14)
Audi TT RS (2018-)
Cadillac ATS-V (16-17)

2024-02-01 T2 Reply to letter #35161 and #31661

#35384 from Andrew Aquilante · Rule change · TB 24-02 (2024-02 Fastrack)

In T2 Spec Lines, Chevrolet Camaro, 1LE (2016-), change as follows:
Min Weight: "3500 3575"
Notes: "58mm 60mm flat plate restrictor required"

2024-02-01 GT2 REDUCE C6 CORVETTE WEIGHT WITH OEM 7 LITER ENGINE REDUCE BY 150LB

#35385 from Mike McGinley · Rule change · TB 24-02 (2024-02 Fastrack)

In GT2/ST Chevrolet Corvette 7011 OEM change weight as follows:
“3275 3125“

2024-02-01 GT2 GT Direct Injection allowance and rules

#35437 from Grand Touring Committee · Rule change · TB 24-02 (2024-01 Fastrack)

In GCR, Section 9.1.2.F.7.5.E. change as follows:
“Direct Injection is not permitted only if it came OE and must be installed using only OE high pressure pump(s), hard and
soft hoses and injectors.”

2024-02-01 GT2 GT2/3 remove Direction Injection not allowed in Spec line notes

#35439 from Grand Touring Committee · Rule change · TB 24-02 (2024-02 Fastrack)

In GT2/3 modify Spec Line notes as follows:
GT2:
Nissan: “Direct Injection not permitted, may be used per 9.1.2.F.7.5.E.”
GT3:
Mazda: “Direct Injection not permitted, may be used per 9.1.2.F.7.5.E.”
Mitsubishi 4G93: “Direct Injection not permitted, may be used per 9.1.2.F.7.5.E. ”
Nissan QR25DE/DD 1988cc: “Direct Injection not permitted, may be used per 9.1.2.F.7.5.E.”
Nissan QE25DE/DD 2489cc: “Direct Injection not permitted, may be used per 9.1.2.F.7.5.E.”

2024-03-01 GT2 Classify Corvette C8 (2020- ) into GT2/ST

#33759 from Andrew Aquilante · Rule change · TB 24-03 (2024-03 Fastrack)

In GT2 Spec Lines, classify Chevrolet Corvette C8 (20-) as follows:
GT2-ST Maximum Displacement Minimum Weight Restrictor Notes
Chevrolet Corvette C8
(20-)
6162 3300 71mm -
Flat Plate
LT2 engine.

Applies to Chevrolet Corvette on this page: Igor Lyustin

2024-03-01 T3 Spec Z Interchange in T3

#34416 from Kyle Ray-Smith · Rule change · TB 24-03 (2024-03 Fastrack)

In T3 Spec Lines, Nissan 350Z Track/ Touring/ Standard/ Nismo Spec Z (03-08), change as follows:
Max Wheel Size (inch): "18 x 9 (F) 18 x 10 (R)"
Notes: "Nissan Motorsports: Shock Front left P/N E6110-SZ350 & Front right E6111- SZ350 & rear E6210-SZ350, springs front
P/N 54010-SZ350 & rear 55020- SZ350, F&R 5600S-SZ350, Front sway bar max 37mm. Rear sway bar max 25mm, Bushings P/N
(54541, 54560, 55045, 55148, 55149, 55152, 55153, 55158, 56218) - RRZ30 allowed. Nismo flywheel permitted. SPC Control
Arms 72125 and 72123 are allowed. HR Engine: Two 42mm flat plate restrictors required. Zspeed and Z1 alternative clutch slave
permitted. Must conform to all SpecZ 2018 Edition rules. No other touring allowances beyond 2018 SpecZ edition rules or
allowances listed here. Nissan brake part numbers NISMO Race Front Caliper Kit 41001-FR350, NISMO Front Rotor-RIGHT 40206-

2024-03-01 T3 please classify 2000-2002 Audi s4

#35306 from Jake Gordhamer · Rule change · TB 24-03 (2024-03 Fastrack)

In T3 Spec Lines, classify Audi S4 (2000-2002) as follows:

A specification table follows in the original; it is not shown here.

2024-03-01 T3 Reorganize Spec Lines

#35375 from Touring Committee · Rule change · TB 24-03 (2024-03 Fastrack)

In T2-T4 Spec Lines, change Spec Line as follows:
"Wheel- base (mm) Required Restrictor"

2024-03-01 T2 Reorganize Spec Lines

#35375 from Touring Committee · Rule change · TB 24-03 (2024-03 Fastrack)

In T2-T4 Spec Lines, change Spec Line as follows:
"Wheel- base (mm) Required Restrictor"

2024-03-01 GT2 Requesting classification for a 2015 Mitjet ST in GT2

#35408 from Jim Froula · Rule change · TB 24-03 (2024-03 Fastrack)

In GT2 Spec Lines, GT Cars - MITJET ST, classify MITJET ST as follows:
GT Cars – MITJET ST
Model Years Body Style Drive-
line
Wheel-
base (in)
Notes
MITJET ST 2015 RWD 94.5 Must run per VTS specifications. Must have

2024-03-01 STU Letter #35397 addendum

#35453 from Aaron Fitzsimmons · Rule change · TB 24-03 (2024-03 Fastrack)

In STU Spec Lines, Mini Cooper S SC with Minimum Weight 1900 and 2100, add to Notes:
"Alternate LEAP OMICRON hood scoop part # LEP-OMICRON3 is permitted."

2024-03-01 STU S54 Drysump

#35464 from Macey Urso · Rule change · TB 24-03 (2024-03 Fastrack)

In STU Spec Lines, BMW S54 B32 OEM, add to Notes as follows:
"Dry Sump oiling system permitted."

2024-03-01 T3 370Z Brake Rotor Size Correction

#35487 from Derek Chan · Rule change · TB 24-03 (2024-03 Fastrack)

In T2 Spec Lines, Nissan 370Z (09-17) / 370Z NISMO Edition (09-17), change Brakes (mm) as follows:
"(F)320 x 28 Vented R)320 x 16 Vented : (F) 355x32mm Vented(R) 350x20mm Vented”
In T3 Spec Lines, Nissan 370Z, incl. Nismo (2009-2022), change Brakes (mm) as follows:
"(F)320 x 28 Vented (R)320 x 16 Vented : (F) 355x32mm Vented(R) 350x20mm Vented”

Applies to Nissan 370Z on this page: Gamaliel Aguilar-Gamez

2024-03-01 T2 370Z Brake Rotor Size Correction

#35487 from Derek Chan · Rule change · TB 24-03 (2024-03 Fastrack)

In T2 Spec Lines, Nissan 370Z (09-17) / 370Z NISMO Edition (09-17), change Brakes (mm) as follows:
"(F)320 x 28 Vented R)320 x 16 Vented : (F) 355x32mm Vented(R) 350x20mm Vented”
In T3 Spec Lines, Nissan 370Z, incl. Nismo (2009-2022), change Brakes (mm) as follows:
"(F)320 x 28 Vented (R)320 x 16 Vented : (F) 355x32mm Vented(R) 350x20mm Vented”

Applies to Nissan 370Z on this page: Gamaliel Aguilar-Gamez

2024-03-01 T2 Letter #35154 2018+ Mustang GT Expansion

#35488 from Michael Kamalian · Rule change · TB 24-03 (2024-03 Fastrack)

In T2 Spec Lines, Ford Mustang GT 5.0L (2018-), add to Notes as follows:
"BMR rear upper control arm camber links part #UTCA064 permitted."

Applies to Ford Mustang on this page: Scotty B White

2024-03-01 T3 T3 V6 Mustang help

#35526 from Scotty B White · Rule change · TB 24-03 (2024-03 Fastrack)

In T3 Spec Lines, Ford Mustang V6 (11-14), change Notes as follows:
"58mm flat plate restrictor required."
In T3 Spec Lines, Ford Mustang V6 (15-17), change Notes as follows:
"58mm flat plate restrictor required. R ear spring relocated to shock allowed. 800lbs springs (F/R) allowed. Track package
allowed. Optional: 6 speed automatic transmission (with paddle shifters). Sway bars allowed up to 38mm (F) 28mm (R). Ford
Motorsports 6-piston M2300V 380mm brake kit allowed with +100lb +50lb penalty, or optional 2-piece rotor 355mmmax
Brembo brake kit #M-2300-S allowed with +50lb penalty."

Applies to Ford Mustang on this page: Scotty B White, Roger Eagleton, Matt Lituchy, Michael Lowe, Rick Luckett

2024-03-01 T3 Nissan 370Z - Brake System Allowance - Brake Booster

#35556 from Gamaliel Aguilar Gamez · Rule change · TB 24-03 (2024-03 Fastrack)

In T3 Spec Lines, Nissan 350Z Track/ Touring/ Standard/ Nismo (03-08), add to Notes as follows:
"Brake booster vacuum regulator allowed, cannot be in-car adjustable."
In T3 Spec Lines, Nissan 370Z, incl. Nismo (2009-2022), add to Notes the following:
"Brake booster vacuum regulator allowed, cannot be in-car adjustable."

Applies to Nissan 370Z on this page: Gamaliel Aguilar-Gamez

2024-03-01 T3 Mustang Help

#35559 from Ross Murray · Rule change · TB 24-03 (2024-03 Fastrack)

In T3 Spec Lines, Ford Mustang Coupe GT & Shelby GT 4.6L & Cal. Special (05-10), change Notes as follows:
"A flat plate restrictor with two 40 mm 45mm holes required directly behind throttle body."

Applies to Ford Mustang on this page: Scotty B White, Roger Eagleton, Matt Lituchy, Michael Lowe, Rick Luckett

2024-03-01 T3 Appeal for Retention of T3 Mazda RX-8 Spec Line (Letter #35378)

#35577 from Raymond Blethen · Rule change · TB 24-03 (2024-03 Fastrack)

Thank you for your letter. Please see letter #35584 in current Fastrack.

2024-03-01 T3 Request to Keep the Mazda Rx-8 in Touring 3

#35584 from Kyle Bolden · Rule change · TB 24-03 (2024-03 Fastrack)

In T3 Spec Lines, Mazda RX-8 Base/R3/Sport/ GT (04-12), change Notes as follows:
"**This Spec line will expire 12/31/24, Please submit to appeal**"

2024-03-01 T3 Subaru WRX (02-05) Appeal

#35656 from Anthony Piselli III · Rule change · TB 24-03 (2024-03 Fastrack)

In T3 Spec Lines, Subaru WRX (02-05), change Notes as follows:
"**This Spec line will expire 12/31/24, Please submit to appeal**"

2024-04-01 T2 Brake Request for 2009 Porsche Cayman

#35723 from Jason Ott · Rule change · TB 24-04 (2024-04 Fastrack)

In T2 Spec Lines, Porsche Cayman S (06-09), add to Notes the following:
"The following brake kit is allowed in its entirety with a 50 lb penalty- (f) StopTech ST60 (83.788.6700), rotor size 355X32
(r) StopTech ST40 (83.799.0046), rotor size 332X32."

2024-05-01 GT2 Request for Spec Line 1010 Reconsideration

#35009 from Kristofer Olson · Rule change · TB 24-05 (2024-05 Fastrack)

In GT2-ST Spec Lines, Acura NSX, change as follows:
Minimum Weight: "2700 3000"
Restrictor: "43 45mm TIR"

2024-05-01 T3 Allow T4 and T3 RX8 to Disable/Remove Factory Oil Inj.

#35761 from David Mead · Rule change · TB 24-05 (2024-05 Fastrack)

In T3 Spec Lines, Mazda RX-8 Base/R3/Sport/ GT (04-12), add to Notes as follows:
"OEM oil injection system may be removed or disabled."
In T4 Spec Lines, Mazda RX-8 Base/R3/Sport/ GT (04-12), add to Notes as follows:
"OEM oil injection system may be removed or disabled."

2024-05-01 T2 Allow T4 and T3 RX8 to Disable/Remove Factory Oil Inj.

#35761 from David Mead · Rule change · TB 24-05 (2024-05 Fastrack)

In T3 Spec Lines, Mazda RX-8 Base/R3/Sport/ GT (04-12), add to Notes as follows:
"OEM oil injection system may be removed or disabled."
In T4 Spec Lines, Mazda RX-8 Base/R3/Sport/ GT (04-12), add to Notes as follows:
"OEM oil injection system may be removed or disabled."

2024-05-01 GT2 Request to Eliminate the FPR from the Corvette (-2013) with LS2

#35878 from Michael Quattlebaum · Rule change · TB 24-05 (2024-05 Fastrack)

In GT2-ST Spec Lines, Chevrolet Corvette (14-19), change Restrictor as follows:
"78 80mm flat plate"

2024-05-01 T2 Competition Adjustment Request/Wheel Size of E46

#35895 from David Newman · Rule change · TB 24-05 (2024-05 Fastrack)

In T2 Spec Lines, BMW M3 (01-06), change Max Wheel Size (inch) as follows:
"18 x 9 18 x 10"

2024-05-01 T3 Driveshafts

#35916 from Scotty B White · Rule change · TB 24-05 (2024-05 Fastrack)

In GCR Section 9.1.9.2.D.4.b., add the following:
"6. T2-T3- Driveshafts may be replaced with alternative materials ie. carbon fiber, aluminum, steel. Two-piece driveshafts may
be replaced with one-piece units. If non-OEM driveshaft is used, add 25 lbs."

2024-05-01 T2 Driveshafts

#35916 from Scotty B White · Rule change · TB 24-05 (2024-05 Fastrack)

In GCR Section 9.1.9.2.D.4.b., add the following:
"6. T2-T3- Driveshafts may be replaced with alternative materials ie. carbon fiber, aluminum, steel. Two-piece driveshafts may
be replaced with one-piece units. If non-OEM driveshaft is used, add 25 lbs."

2024-05-01 T3 Audi S4 HST requirement

#35918 from Touring Committee · Rule change · TB 24-05 (2024-05 Fastrack)

In T3 Spec Lines, Audi S4 (00-02), add to Notes as follows:
"**This car is not eligible for the Runoffs until it has competed in 3 Super Tour events.**"

2024-06-01 T3 Global MX5 Tre change

#36046 from Touring Committee · Rule change · TB 24-06 (2024-06 Fastrack)

In T3 Spec Lines, Mazda MX-5 Global Cup Miata (2016-2021) ND1, ND2, change Tire Size as follows:
"Series Mazda MX5 Cup spec tires: 215/610 R17 BF Goodrich G-Force Slick, 20/61- 17 G-Force Wet-P2G or 225 DOT"

2024-07-01 T3 Mustang T2/T3

#35877 from Scotty B White · Rule change · TB 24-07 (2024-07 Fastrack)

In T2 Spec Lines, Ford Mustang GT 5.0L (15-17), add to Notes as follows:
"Track/Performance Package parts permitted."
In T2 Spec Lines, Ford Mustang GT 5.0L (2018-), add to Notes as follows:
"Track/Performance Package parts permitted."
In T3 Spec Lines, Ford Mustang V6 (15-17), change Notes as follows:
"Track/Performance package allowed."

Applies to Ford Mustang on this page: Scotty B White, Roger Eagleton, Matt Lituchy, Michael Lowe, Rick Luckett

2024-07-01 T2 Mustang T2/T3

#35877 from Scotty B White · Rule change · TB 24-07 (2024-07 Fastrack)

In T2 Spec Lines, Ford Mustang GT 5.0L (15-17), add to Notes as follows:
"Track/Performance Package parts permitted."
In T2 Spec Lines, Ford Mustang GT 5.0L (2018-), add to Notes as follows:
"Track/Performance Package parts permitted."
In T3 Spec Lines, Ford Mustang V6 (15-17), change Notes as follows:
"Track/Performance package allowed."

Applies to Ford Mustang on this page: Scotty B White, Roger Eagleton, Matt Lituchy, Michael Lowe, Rick Luckett

2024-07-01 T2 S550 Brakes

#35926 from Scotty B White · Rule change · TB 24-07 (2024-07 Fastrack)

In T2 Spec Lines, Ford Mustang Ecoboost 2.3 (2015-), add to Notes the following:
"100LB for Mustang S550 2015-17 5.0 Gen2 and 2018-23 5.0. Gen3 reduce weight by 100Lb when using 4 piston stock
or Brembo brakes with 355mm rotors."

2024-07-01 T3 T2-T4 Driveshaft Mistake...?

#36050 from Scotty B White · Rule change · TB 24-07 (2024-07 Fastrack)

In GCR Section 9.1.9.2.D.4.b.6., remove as follows:
"If non-OEM driveshaft is used, add 25 lbs."
In T2 Spec Lines, Ford Mustang V6 (11-14), change Notes as follows:
"Driveshaft from Alternate metallic driveshaft is allowed."
In T2 Spec Lines, Ford Mustang Boss 302 (12-13), change Notes as follows:
"Alternate metallic driveshaft is allowed."
In T2 Spec Lines, Ford Mustang GT 5.0L (11-14)ki, change Notes as follows:
"Alternate metallic driveshaft is allowed."

Applies to Ford Mustang on this page: Scotty B White, Roger Eagleton, Matt Lituchy, Michael Lowe, Rick Luckett

2024-07-01 T2 T2-T4 Driveshaft Mistake...?

#36050 from Scotty B White · Rule change · TB 24-07 (2024-07 Fastrack)

In GCR Section 9.1.9.2.D.4.b.6., remove as follows:
"If non-OEM driveshaft is used, add 25 lbs."
In T2 Spec Lines, Ford Mustang V6 (11-14), change Notes as follows:
"Driveshaft from Alternate metallic driveshaft is allowed."
In T2 Spec Lines, Ford Mustang Boss 302 (12-13), change Notes as follows:
"Alternate metallic driveshaft is allowed."
In T2 Spec Lines, Ford Mustang GT 5.0L (11-14)ki, change Notes as follows:
"Alternate metallic driveshaft is allowed."

Applies to Ford Mustang on this page: Scotty B White, Roger Eagleton, Matt Lituchy, Michael Lowe, Rick Luckett

2024-07-01 GT2 GT2-ST Rule Clarification

#36093 from Dominic Starkweather · Rule change · TB 24-07 (2024-07 Fastrack)

In GCR Section, Appendix K. 2012.M2, add the following:
"After market replacement differential housings are permitted as long as they are an exact equivalent."

2024-07-01 T3 E&O: #35174 (Derek Chan) 350Z Parity Request

#36116 from Lansing Stout · Rule change · TB 24-07 (2024-07 Fastrack)

In T3 Spec Lines, Nissan 350ZTrack/ Touring/Standard/Nismo(03-08), add to Notes as follows:
"DE engine: Cold air intake permitted."

2024-07-01 T2 request for allowance of 6 piston calipers for T2 C5 corvettes

#36126 from Joe Aquilante · Rule change · TB 24-07 (2024-07 Fastrack)

In T2 Spec Lines, add to Notes the following:
Chevrolet Camaro SS (98-02): Four or six piston front calipers allowed.
Chevrolet Camaro, 1LE (2016-): Four or six piston front calipers allowed.
Chevrolet Corvette C-5 Incl. Fxd Cpe (98-04) Z06 (hardtop) (01-04): Four or six piston front calipers allowed.
Chevrolet Corvette C6 Coupe / Grand Sport (05-13): Four or six piston front calipers allowed.
Chevrolet Corvette Z06 (06-12): Four or six piston front calipers allowed.
Pontiac Firebird (98-02): Four or six piston front calipers allowed.
Pontiac Solstice GXP Coupe/Convertible (07-09): Four or six piston front calipers allowed.

2024-07-01 T3 B8/8.5 Audi S4 T3 and T2

#36195 from Brian Leib · Rule change · TB 24-07 (2024-07 Fastrack)

In T3 Spec Lines, Classify Audi S4 (2000-2002) as follows and allow the T2 spec line to expire.

A specification table follows in the original; it is not shown here.

2024-07-01 T2 B8/8.5 Audi S4 T3 and T2

#36195 from Brian Leib · Rule change · TB 24-07 (2024-07 Fastrack)

In T3 Spec Lines, Classify Audi S4 (2000-2002) as follows and allow the T2 spec line to expire.

A specification table follows in the original; it is not shown here.

2024-07-01 T3 Z4 Roadster Eligibility

#36196 from Allan Unruh · Rule change · TB 24-07 (2024-07 Fastrack)

In T3 Spec Lines, BMW Z4 3.0si, & Coupe (07-08) change Model and add to Notes as follows:
"BMW Z4 3.0si, 3.0i, Roadster & Coupe (07-08)"
Notes: "Any OEM or aftermarket hardtop permitted that retains the OEM roof silhouette (if a hardtop is used, latches
shall be replaced with positive fasteners)."

2024-07-01 GT2 GT4 cars may run in GT2-ST

#36235 from Grand Touring Committee · Rule change · TB 24-07 (2024-07 Fastrack)

In 9.1.2. GT2 Spec Lines, GT3 Cars, change Note as follows:
"Note: All GT4 cars are permitted to compete in GT2-ST provided they use a factory supplied power stick or Pro Series
required restrictor. Must have GT4 rules in possession at all race events. Cars must comply with 2012 STO rules as
stated in Appendix K of the GCR. Engine Displacements in this table are nominal. Each competitor shall have available
definitive documentation (e.g., factory manual) of the original displacement for the engine used. Slicks allowed on all
GT2/ST cars with a 100-pound weight penalty."

2024-08-01 T2 Errors

#36214 from Touring Committee · Rule change · TB 24-08 (2024-08 Fastrack)

In T2 Spec Lines, Chevrolet Corvette C6 Coupe / Grand Sport (05-13), change Required Restrictor as follows:
"LS2: "53 63mm flat plate restrictor"
In T2 Spec Lines, Chevrolet Camaro, 1LE (2016-), change as follows:
Min Weight: "3575 3500"
Required Restrictor: "60mm FRP 58mm flat plate restrictor"

2024-08-01 T3 Honda Civic Si (2017+)

#36249 from Jason LaManna · Rule change · TB 24-08 (2024-08 Fastrack)

In T3 Spec Lines, Honda Civic Si (2017-) with 2900 weight, change as follows:
Model: "Honda Civic Si (2017-2021)"
Restrictor: "36mm TIR"
Add to Notes: "**This car is not eligible for the Runoffs until it has competed in 3 Super Tour events.**"
In T3 Spec Lines, Honda Civic Si (2017-), change as follows:
Model: "Honda Civic Si (2017-2021)"
Restrictor: "36mm TIR"
Weight (lbs): "30752950"

2024-08-01 STU RWD Turbo Disadvantage

#36255 from David Fiorelli · Rule change · TB 24-08 (2024-08 Fastrack)

In GCR, Section 9.1.4.1.H.3 - Inlet Restrictor (mm) Minimum Weight (lbs) table, change as follows:
"RWD cars must reduce restrictor 1 mm from this table"

2024-08-01 T2 Subaru Appeal

#36258 from Anthony Piselli III · Rule change · TB 24-08 (2024-08 Fastrack)

In T2 Spec Lines, Subaru Impreza WRX STi (03-07), change Notes as follows:
"**This Spec line will expire 12/31/24, Please submit to appeal**"
In T2 Spec Lines, Subaru Impreza WRX STi (08-11), change Notes as follows:
"**This Spec line will expire 12/31/24, Please submit to appeal**"

2024-08-01 T3 Subaru Reliability Help

#36284 from Anthony Piselli III · Rule change · TB 24-08 (2024-08 Fastrack)

In T3 Spec Lines, Subaru STI (15-20), add to Notes the following:
"OEM spec block permitted # IAG-ENG-S550, Head studs permitted."
In T3 Spec Lines, Subaru WRX STI (03-07), add to Notes the following:
"OEM spec block permitted # IAG-ENG-S550, Head studs permitted."

2024-08-01 T3 spec line for 36073

#36338 from Touring Committee · Rule change · TB 24-08 (2024-08 Fastrack)

In T3 Spec Lines, classify Audi TT Coupe (08-14) as follows:

A specification table follows in the original; it is not shown here.

2024-08-01 T3 36131

#36339 from Touring Committee · Rule change · TB 24-08 (2024-08 Fastrack)

In T3 Spec Lines, classify Mazda MX5 Miata/Club/ RF (19-24) as follows:
T3 Bore x
Stroke(mm)/
Disp. (cc)
Restrictor Max Wheel

A specification table follows in the original; it is not shown here.

2024-08-01 T2 S550 Brakes

#36571 from Club Racing Board · Rule change · TB 24-08 (2024-08 Fastrack)

In T2 Spec Lines, Ford Mustang GT 5.0L (15-17), add to Notes as follows:
"Mustang S550 2015-17 5.0 Gen2 and 2018-23 5.0. Gen3 reduce weight by 100Lb when using 4 piston stock or Brembo brakes
with 355mm rotors."
In T2 Spec Lines, Ford Mustang GT 5.0L (18 -), add to Notes as follows:
"Mustang S550 2015-17 5.0 Gen2 and 2018-23 5.0. Gen3 reduce weight by 100Lb when using 4 piston stock or Brembo brakes
with 355mm rotors."
In T2 Spec Lines, Ford Mustang Ecoboost 2.3 (2015-), change Notes as follows:
"Reduce weight by 100Lb when using either stock 355mm 4 piston brakes or m2300s 355mm 4 piston Ford brake kit."

Applies to Ford Mustang on this page: Scotty B White

2024-11-01 STU R53 15% Pulley Request

#36980 from Aaron Fitzsimmons · Rule change · TB 24-11 (2024-11 Fastrack)

In STU Spec Lines, Mini Cooper S SC, add to notes:
1900: "Stock supercharger pulley. 2.565 diameter."
2100: "JCW Pulley permitted. May run a 2.285 diameter pulley."

2024-11-01 T2 Spec Corvette Change for T2

#37127 from Joe Aquilante · Rule change · TB 24-11 (2024-11 Fastrack)

In T2 Spec Lines, Spec Corvette, change Notes as follows:
"Cars must comply with all Spec Corvette rules dated 11-28-22 including fuel and tires. No tire treatment or rubber softeners are
permitted. Limited to 380 HP. Nankang NS-2R Tires conforming to Spec Corvette rules are required or a 295 R compound DOT
tire."

2024-12-01 T3 Amend TIR Placement on VW

#36175 from Aaron Stehly · Rule change · TB 24-12 (2024-12 Fastrack)

In T3 Spec Lines, Volkswagen Golf R (12-13), change Restrictor Required as follows:
"36mm TIR max 60mm from impeller TIR may be placed in the OEM turbo inlet as long as the restriction is entirely within the
leading edge of the housing."
In T3 Spec Lines, Volkswagen Golf R (15-18), change Restrictor Required as follows:
"36mm TIR max 60mm from impeller TIR may be placed in the OEM turbo inlet as long as the restriction is entirely within the
leading edge of the housing."

2024-12-01 T3 Redundant Verbiage Regarding Mustang Spec Lines for Driveshaft

#36484 from David Mead · Rule change · TB 24-12 (2024-12 Fastrack)

In T2 Spec Lines, change Notes as follows:
Ford Mustang V6 (11-14): "Alternate driveshaft is allowed."
Ford Mustang Boss 302 (12-13): "Alternate driveshaft is allowed."
Ford Mustang GT 5.0L (11-14): "Alternate driveshaft is allowed."
Ford Mustang GT 5.0L (15-17): "Alternate driveshaft is allowed."
Ford Mustang GT 5.0L (2018-): "Alternate driveshaft is allowed. Springs up to 800#/in front and rear permitted. Alternate
metallic driveshaft permitted."
Ford Mustang Coupe GT & Shelby GT 4.6L (05-10): "Alternate driveshaft is allowed."

2024-12-01 T2 Redundant Verbiage Regarding Mustang Spec Lines for Driveshaft

#36484 from David Mead · Rule change · TB 24-12 (2024-12 Fastrack)

In T2 Spec Lines, change Notes as follows:
Ford Mustang V6 (11-14): "Alternate driveshaft is allowed."
Ford Mustang Boss 302 (12-13): "Alternate driveshaft is allowed."
Ford Mustang GT 5.0L (11-14): "Alternate driveshaft is allowed."
Ford Mustang GT 5.0L (15-17): "Alternate driveshaft is allowed."
Ford Mustang GT 5.0L (2018-): "Alternate driveshaft is allowed. Springs up to 800#/in front and rear permitted. Alternate
metallic driveshaft permitted."
Ford Mustang Coupe GT & Shelby GT 4.6L (05-10): "Alternate driveshaft is allowed."

2024-12-01 T2 Request Less Restriction for Ls-3 Engined C6 Corvette

#36810 from Joe Aquilante · Rule change · TB 24-12 (2024-12 Fastrack)

In T2 Spec Lines, Chevrolet Corvette C6 Coupe / Grand Sport (05-13), change Restrictor Required as follows:
"LS3: 53mm 56mm flat plate restrictor"

2024-12-01 T3 Fuel Emissions Components

#37076 from Derrick Ambrose · Rule change · TB 24-12 (2024-12 Fastrack)

In GCR, Section 9.1.9.2.D.1.c. add the following:
"5. Removal of ancillary fuel tank equipment charcoal canisters, emissions valves, and sensors allowed for OEM or aftermarket
fuel cell installations."

2024-12-01 T2 Fuel Emissions Components

#37076 from Derrick Ambrose · Rule change · TB 24-12 (2024-12 Fastrack)

In GCR, Section 9.1.9.2.D.1.c. add the following:
"5. Removal of ancillary fuel tank equipment charcoal canisters, emissions valves, and sensors allowed for OEM or aftermarket
fuel cell installations."

2024-12-01 T3 fix brake wording

#37129 from Touring Committee · Rule change · TB 24-12 (2024-12 Fastrack)

In GCR, Section, 9.1.9.2.D.6. Brakes, change as follows:
"a. Components
1. The make and material of brake pads and linings may be changed.
2. Brake fluid may be substituted with any brake fluid.
3. Brake rotor dust shields may be removed or replaced to accommodate brake ducts.
4. Flexible rubber brake lines may be replaced with Teflon lined, metal braided hoses.
5. Any brake ducts are permitted, but they must serve no other purpose. Fender liners may be modified solely for routing and
attachment of brake ducts. Duct intake openings may be created by the opening of 2 sections up to 14.5 square inches each in

2024-12-01 T2 fix brake wording

#37129 from Touring Committee · Rule change · TB 24-12 (2024-12 Fastrack)

In GCR, Section, 9.1.9.2.D.6. Brakes, change as follows:
"a. Components
1. The make and material of brake pads and linings may be changed.
2. Brake fluid may be substituted with any brake fluid.
3. Brake rotor dust shields may be removed or replaced to accommodate brake ducts.
4. Flexible rubber brake lines may be replaced with Teflon lined, metal braided hoses.
5. Any brake ducts are permitted, but they must serve no other purpose. Fender liners may be modified solely for routing and
attachment of brake ducts. Duct intake openings may be created by the opening of 2 sections up to 14.5 square inches each in

2024-12-01 T3 Evaporative emissions systems

#37130 from Touring Committee · Rule change · TB 24-12 (2024-12 Fastrack)

In GCR, Section, 9.1.9.2.D.1.c., add the following:
"5. Removal of ancillary fuel tank equipment; charcoal canisters, emissions valves, and sensors allowed for OEM or aftermarket
fuel cell installations."

2024-12-01 T2 Evaporative emissions systems

#37130 from Touring Committee · Rule change · TB 24-12 (2024-12 Fastrack)

In GCR, Section, 9.1.9.2.D.1.c., add the following:
"5. Removal of ancillary fuel tank equipment; charcoal canisters, emissions valves, and sensors allowed for OEM or aftermarket
fuel cell installations."

2024-12-01 STU Request to Remove Miata Hubs from General category

#37138 from Christopher Childs · Rule change · TB 24-12 (2024-12 Fastrack)

In GCR, Section 9.1.4.M.18., change as follows:
"18. Allow alternate front wheel front hubs, Mazda Motorsports Development Part #0000-04-5HUB-S1, for the 90-05 Mazda
Miata: Mazda Motorsports Development Part #0000-04-5HUB-S1."

2024-12-01 T3 Allow Spec MX5 upgrade kit for 2009-11 RX8 S2 Transmision

#37140 from Chris Braunlich · Rule change · TB 24-12 (2024-12 Fastrack)

In T4 Spec Lines, add the following to Notes:
Mazda RX-8 Base/R3/Sport/ GT (04-12): "Transmission kit # 0000-02-5700 permitted.
Mazda MX-5 / Club Model (06-15): "Transmission kit # 0000-02-5700 permitted."
In T3 Spec Lines, add the following to Notes:
Mazda MX-5 / Club Model (06-15): "Transmission kit # 0000-02-5700 permitted."
Mazda RX-8 Base/R3/Sport/ GT (04-12): "Transmission kit # 0000-02-5700 permitted."

2024-12-01 STU BMW N54/N55 Engine Allowance

#37146 from Martin Sarukhanyan · Rule change · TB 24-12 (2024-12 Fastrack)

"Turbo inlet restrictors designed per GCR Appendix F Technical Glossary definition of “Turbo Inlet Restrictor” may be required;
see table 9.1.4.1.H.h.2 3. Swapping of turbochargers between engine makes and models is prohibited. Supercharged cars may be
approved on a case-by-case basis; twin turbo engines are allowed on a case-by-case basis only. Contact the Road Racing
Technical Office for details. Twin turbo engines may be converted to single turbo using one of the allowed alternate turbos (see
9.1.4.1.H.3 2). Aftermarket turbocharger and supercharger kits will be allowed on a case-by-case basis.

2024-12-01 T3 Move Spec Boxster to T4

#37158 from Rob Piekarczyk · Rule change · TB 24-12 (2024-12 Fastrack)

In T4 Spec Lines, classify Porsche Spec Boxster, as follows:

A specification table follows in the original; it is not shown here.

2024-12-01 T2 Move Spec Boxster to T4

#37158 from Rob Piekarczyk · Rule change · TB 24-12 (2024-12 Fastrack)

In T4 Spec Lines, classify Porsche Spec Boxster, as follows:

A specification table follows in the original; it is not shown here.

2024-12-01 T2 Corvette Wheels

#37169 from Brian LaCroix · Rule change · TB 24-12 (2024-12 Fastrack)

In T2 Spec Lines, Chevrolet Corvette C6 Coupe / Grand Sport (05-13), change Max Wheel Size as follows:
"18 x 10 11 (F) 19 x 11 (R) or 18 x 11 (F) 19 x 13 (R)"

2024-12-01 T3 BMW 320i Spec Line

#37204 from chi ho · Rule change · TB 24-12 (2024-12 Fastrack)

In T4 Spec Lines, BMW 320i (14-15), change Notes as follows:
"**This Spec line will expire 12/31/24, Please submit to appeal** Turner Motorsports intercooler #024703TMS02 allowed."

2024-12-01 T2 BMW 320i Spec Line

#37204 from chi ho · Rule change · TB 24-12 (2024-12 Fastrack)

In T4 Spec Lines, BMW 320i (14-15), change Notes as follows:
"**This Spec line will expire 12/31/24, Please submit to appeal** Turner Motorsports intercooler #024703TMS02 allowed."

2024-12-01 T3 Classification for a 2005 Cadillac CTS 3.6 liter 6 speed manual

#37224 from Timothy Nash · Rule change · TB 24-12 (2024-12 Fastrack)

In T3 Spec Lines, classify Cadillac CTS (02-07) as follows:

2024-12-01 T2 Classification for a 2005 Cadillac CTS 3.6 liter 6 speed manual

#37224 from Timothy Nash · Rule change · TB 24-12 (2024-12 Fastrack)

In T3 Spec Lines, classify Cadillac CTS (02-07) as follows:

2024-12-01 T3 Request to Classify BMWs

#37226 from Fady Abbasi · Rule change · TB 24-12 (2024-12 Fastrack)

In T3 Spec Lines, BMW 330i (06-12), change model as follows:
"BMW 328i, 330i (06-12)"
In T3 Spec Lines, classify BMW 320i (14-15), as follows:

A specification table follows in the original; it is not shown here.

2024-12-01 T3 Make adjustments to the 2015 STI Spec line

#37246 from Touring Committee · Rule change · TB 24-12 (2024-12 Fastrack)

In T3 Spec Lines, Subaru WRX STI (15-20), change as follows:
"Subaru WRX STI (15-20 21)"
Tire Size (Max): "245 275"

2024-12-01 T3 class a civic

#37294 from Touring Committee · Rule change · TB 24-12 (2024-12 Fastrack)

In T3 Spec Lines, classify Honda HPD Civic Si FE1 as follows:

A specification table follows in the original; it is not shown here.

2024-12-01 T2 Please Consider Allowing Update to the C5 Corvette

#37298 from DAVID WOODLE · Rule change · TB 24-12 (2024-12 Fastrack)

In T2 Spec Lines, Chevrolet Corvette C-5 Incl. Fxd Cpe (98-04) Z06 (hardtop) (01-04), change Restrictor Required as follows:
"59mm FRP LS1: 59mm FPR, LS2: 63mm FPR, LS3: 56mm FPR"

Applies to Chevrolet Corvette on this page: Josh Carroll, David Holmes, Patrick Howe, Evan Gold, Greg Nester, Michael Cheney, Luis Martinez

2024-12-01 T3 Older STI in T3

#37300 from Touring Committee · Rule change · TB 24-12 (2024-12 Fastrack)

In T3 Spec Lines, Subaru WRX STI (03-07), change Weight as follows:
"3300 3200"
In T3 Spec Lines, Subaru Legacy GT/Spec B (05-09), change Weight as follows:
"3350 3200"

2024-12-01 T2 Major error in lane, but nobody ran it.

#37302 from Touring Committee · Rule change · TB 24-12 (2024-12 Fastrack)

In T2 Spec Lines, delete Chevrolet Corvette Z06 (06-12) Spec Line in its entirety.

2025-01-01 STU Audi 1.8t Wagon STU Table B

#36685 from Mike McLaughlin · Rule change · TB 25-01 (2025-01 Fastrack)

In STU Spec Lines, Table B: Alternate Vehicle and Engine Requirements, delete Audi/VW 1.8 Turbo in its entirety.
In STU Spec Lines, Table B: Alternate Vehicle and Engine Requirements, Porsche 944 w/Max Displacement 1800, change as
follows:
Weight: "3050 Chart"
Notes: "VW/Audi 1.8L 35mm turbo engine permittedinlet restrictor required."

2025-01-01 GT2 Panoz Esperante GTS BOP

#36686 from Brian Goldburg · Rule change · TB 25-01 (2025-01 Fastrack)

In GT2 SPEC LINES, GT Engines - PANOZ, classify 2013-2016 Ford EcoBoost Twin Turbo as follows:
GT Engines – PANOZ
Engine
Family
Engine Type Bore x
Stroke
(in.)
Disp.

A specification table follows in the original; it is not shown here.

2025-01-01 T3 Request to Move Spec Mustang to Touring 3 (from T2)

#37080 from Roger Eagleton · Rule change · TB 25-01 (2025-01 Fastrack)

In T3 Spec Lines, classify Ford Spec Mustang as follows:

A specification table follows in the original; it is not shown here.

Applies to Ford Mustang on this page: Scotty B White, Roger Eagleton, Matt Lituchy, Michael Lowe, Rick Luckett

2025-01-01 GT2 Correct language regarding OEM Areo Devices

#37137 from Christopher Childs · Rule change · TB 25-01 (2025-01 Fastrack)

In GCR, Section APPENDIX L. 2013 TA2 TECHNICAL REGULATIONS, B.2.c., change as follows:
"B. Aerodynamic Devices
2. Rear wing
c. The entire rear wing assembly, including the end plates and any Gurney flap, shall be mounted level
with, or below, the peak of the roof. OEM aerodynamic devices do not need to adhere to the height rule."

A specification table follows in the original; it is not shown here.

2025-01-01 T2 BoP for the Various Mustangs

#37185 from Scotty B White · Rule change · TB 25-01 (2025-01 Fastrack)

In T2 Spec Lines, Ford Mustang GT 5.0L (11-14), change as follows:
Weight: "3575 3525"

Applies to Ford Mustang on this page: Scotty B White

2025-01-01 T3 3.7 Mustangs BoP

#37186 from Scotty B White · Rule change · TB 25-01 (2025-01 Fastrack)

In T3 Spec Lines, Ford Mustang V6 (11-14), add to Notes the following:
"Cold air intake permitted."
In T3 Spec Lines, Ford Mustang V6 (15-17), add to Notes the following:
"Cold air intake permitted."

Applies to Ford Mustang on this page: Scotty B White, Roger Eagleton, Matt Lituchy, Michael Lowe, Rick Luckett

2025-01-01 GT2 GT2 Sunbeam Tiger Alternate Carburetor

#37198 from Tom Patton · Rule change · TB 25-01 (2025-01 Fastrack)

In GT2 Spec Lines, GT Engines - SUNBEAM, add to Fuel Induction as follows:
"Carburetors(s) Holly 650 cfm PN #80541-1 and PN #80541-2"

2025-01-01 T3 Remove spec lines that have expired

#37269 from Touring Committee · Rule change · TB 24-12 (2024-12 Fastrack)

In T2, Effective 1/1/2025, delete for following Spec Lines in their entirety:
"Acura TL SHAWD (10-13)
Audi S4 (12-14)
Audi S5 (13-14)
Audi TT RS (2018-)
Cadillac ATS-V (16-17)
Cadillac CTS-V (06-07)
Chevrolet Camaro SS (98-02)

2025-01-01 T2 Remove spec lines that have expired

#37269 from Touring Committee · Rule change · TB 24-12 (2024-12 Fastrack)

In T2, Effective 1/1/2025, delete for following Spec Lines in their entirety:
"Acura TL SHAWD (10-13)
Audi S4 (12-14)
Audi S5 (13-14)
Audi TT RS (2018-)
Cadillac ATS-V (16-17)
Cadillac CTS-V (06-07)
Chevrolet Camaro SS (98-02)

2025-01-01 T2 Spec Corvette Line Clarification.

#37441 from Joe Aquilante · Rule change · TB 25-01 (2025-01 Fastrack)

In T2 Spec Lines, Spec Corvette, change as follows:
Weight: "SC-3200, SC+-3300* See Notes Section"
Notes: "Cars must comply with all Spec Corvette rules dated 11-28-22 including fuel and tires. No tire treatment or rubber
softeners are permitted. Limited to 380 HP. Nankang NS-2R Tires conforming to Spec Corvette rules or a 295 R compound DOT
tire. Cars must conform to Spec Corvette rules dated 11/2022. Master cylinder part number GM 19418187 and Booster part
number 19418516 permitted. Limited to 380 HP. Any 200tw 315 tire permitted if used on all 4 corners or a 295 R compound DOT
tire.
Modifications to Radiator Air Shroud to increase radiator cooling efficiency is allowed. Replacement of factory air shroud with

2025-01-01 STU Merger GT3 to STU

#37486 from Club Racing Board · Rule change · TB 25-01 (2025-01 Fastrack)

In STU, Table C, change STU-GT3 charge as follows:
"(Effective January 1, 2026) TABLE C: STU-GT3U"

2025-01-01 STU GT3 TCR Tire allowance

#37494 from Club Racing Board · Rule change · TB 25-01 (2025-01 Fastrack)

In STU, Table C, GT3 TCR, add to Notes the following:
"May run DOT approved tire with maximum section width of 275 with 100 pound weight adder. May not run A compound with
275."

2025-02-01 GT2 GT2/ST - Remove Aftermarket/Racing ABS penalty

#36538 from Jorge A Nazario · Rule change · TB 25-02 (2025-02 Fastrack)

In GCR, Appendix K. 2012 STO Rules, O.9., change as follows:
"May run OEM ABS or convert to an aftermarket ABS controller with 100 50 lb. weight penalty."

2025-02-01 T2 Mustang Update backdate

#37275 from Scotty B White · Rule change · TB 25-02 (2025-02 Fastrack)

In T2 Spec Lines, combine Ford Mustang GT 5.0L (15-17) and Ford Mustang GT 5.0L (2018-) and change as follows:
Delete in its entirety: "Ford Mustang GT 5.0L (15-17)"
"Ford Mustang GT 5.0L (2018-)(15-23)"
Required Restrictor: 58mm flat plate restrictor 2015-17 5.0 Gen 2 63mm FPR, 2018-23 5.0. Gen 3 60mm FPR"
Gear Ratios: "3.66, 2.43, 1.69, 1.32, 1.00, 0.65 or 4.69, 2.98, 2.14, 1.76, 1.52, 1.27, 1.00, 0.85, 0.68, 0.63 or 4.17, 2.34, 1.52, 1.14,
0.87, 0.69"
Notes: "Ford Performance Handling Kit part #M-FR3A-M8, Sway Bars in M-FR3A-M8 kit part #M5490-E or M5490-G, Rear Toe
Bearing part #M-5A460-M, Ford Performance Radiator part #M-8005-M8,Strut Tower Brace part# M-20201-M, Camber Bolts M-

Applies to Ford Mustang on this page: Scotty B White

2025-02-01 T3 350z BOP

#37427 from Touring Committee · Rule change · TB 25-02 (2025-02 Fastrack)

In T3 Spec Lines, Nissan 350Z Track/ Touring/ Standard/ Nismo (03-08), change Required Restrictor as follows:
"HR Engine: (2) 47mm 49mm FPR"

2025-02-01 T2 BOP Adjustment for 2016 - Camaro SS/1LE

#37434 from Kurt Rezzetano · Rule change · TB 25-02 (2025-02 Fastrack)

In T2 Spec Lines, Chevrolet Camaro, 1LE (2016-), change as follows:
"Chevrolet Camaro, 1LE (20 16-25)"
Required Restrictor: "58mm 62mm FPR"
Min Weight: "3500 3600"

2025-02-01 T2 BMW M235iR TCS CHANGE REQUEST

#37470 from Werner Kordas · Rule change · TB 25-02 (2025-02 Fastrack)

In T2 Spec Lines, BMW M235iR (-2016), add to Notes the following:
"Oil cooler and radiator permitted according to touring rules. Silicone charge pipe permitted."

2025-02-01 T3 Request to Classify Club Spec in Appropriate Touring Classes

#37523 from Andrew Benagh · Rule change · TB 25-02 (2025-02 Fastrack)

In T3 Spec Lines, classify Ford SCCA Club Spec Mustang (CSM) as follows:

A specification table follows in the original; it is not shown here.

Applies to Ford Mustang on this page: Scotty B White, Roger Eagleton, Matt Lituchy, Michael Lowe, Rick Luckett

2025-02-01 T2 Request to Classify Club Spec in Appropriate Touring Classes

#37523 from Andrew Benagh · Rule change · TB 25-02 (2025-02 Fastrack)

In T3 Spec Lines, classify Ford SCCA Club Spec Mustang (CSM) as follows:

A specification table follows in the original; it is not shown here.

Applies to Ford Mustang on this page: Scotty B White, Roger Eagleton, Matt Lituchy, Michael Lowe, Rick Luckett

2025-03-01 GT2 Hood Bulge allowed

#37000 from Gordon Leslie · Rule change · TB 25-03 (2025-03 Fastrack)

In GT2 Spec Lines, GT2 Cars - PONTIAC, Fiero, change as follows:
Drive-line: "FWD RWD"
Add to Notes: "Hood bulge permitted as requested for front engine relocation only."

2025-03-01 T2 T2 BOP

#37312 from Touring Committee · Rule change · TB 25-01 (2025-01 Fastrack)

In T2 Spec Lines, BMW M2 CS Cup 2020-, change Notes as follows:
"Effective 3/1/2025 It is mandatory to run the “Purple” power stick part #8324089"Red" power stick part #8324085."
In T2 Spec Lines, Chevrolet Corvette C-5 Incl. Fxd Cpe (98-04) Z06 (hardtop) (01-04), change Required Restrictor as follows:
"Effective 3/1/2025 59mm 58mm"

Applies to Chevrolet Corvette on this page: Josh Carroll, David Holmes, Patrick Howe, Evan Gold, Greg Nester, Michael Cheney, Luis Martinez

2025-03-01 STU BMW N54/N55 Engine Allowance Follow Up

#37447 from Martin Sarukhanyan · Rule change · TB 25-03 (2025-03 Fastrack)

In STU Spec Lines, Table A, classify BMW N54/N55 as follows:
STU Maximum Displacement
(cc's) Minimum Weight Notes
BMW N54/N55 3.0 Chart +3% (DI) Short blocks, heads, and intakes may be
freely swapped within these engine
designations. N54 twin turbo not allowed

2025-03-01 GT2 OEM Wing Adjustment

#37590 from Christopher Childs · Rule change · TB 25-03 (2025-03 Fastrack)

In GCR, Section APPENDIX L. 2013 TA2 TECHNICAL REGULATIONS, B.2.c., change as follows:
"The entire rear wing assembly, including the end plates and any Gurney flap, shall be mounted level with, or below, the peak of
the roof. OEM aerodynamic devices do not need to adhere to the height rule."
In GCR, Section APPENDIX K. 2012 STO GENERAL TECHNICAL REGULATIONS, D.4.b., add the following:
"Factory wings, and spoilers, and roof vortex generators are permitted, but must be removed if an approved aftermarket wing is
installed. OEM aerodynamic devices do not need to adhere to the height rule."

2025-03-01 STU STU Mini Cooper pulley size clarification re: letter #36980

#37717 from Aaron Fitzsimmons · Rule change · TB 25-03 (2025-03 Fastrack)

In STU Spec Lines, Mini Cooper S SC, add to notes:
2100: "May run a 2.285 2.185 diameter pulley."

2025-03-01 STU Question About a Weight Modifier

#37782 from Peter St Pierre · Rule change · TB 25-03 (2025-03 Fastrack)

In STU Spec Lines, Table A, Honda K20C1 Turbo I4, add to Notes the following:
"The 3% DI weight adder does not need to be applied."

2025-03-01 STU Increase Minimum Weight

#37919 from Club Racing Board · Rule change · TB 25-03 (2025-03 Fastrack)

In STU Spec Lines, Table C: STU-GT3U, change Minimum Weight as follows:
"150 250 pounds"

2025-04-01 T2 Please class the Darkhorse R in T2

#37295 from Touring Committee · Rule change · TB 25-04 (2025-04 Fastrack)

In T2 Spec Lines, classify the Ford Mustang Challenge Darkehorse R.

A specification table follows in the original; it is not shown here.

2025-04-01 T3 SpecE46 Tire Change

#37421 from Simon Foweather · Rule change · TB 25-04 (2025-04 Fastrack)

In T3 Spec Lines, BMW Spec E46, change Notes as follows:
"Must conform to all SpecE46 rules Version 2.10. Version 1.1 dated Jan. 6, 2025."

2025-04-01 T3 S197 Mustang V6 in T3

#37594 from John LoGiudice · Rule change · TB 25-04 (2025-04 Fastrack)

In T3 Spec Lines, Ford Mustang V6 (11-14), change Min. Weight as follows:
"3350 3325"

Applies to Ford Mustang on this page: Scotty B White, Roger Eagleton, Matt Lituchy, Michael Lowe, Rick Luckett

2025-04-01 T2 T2 350Z Spec Line Cleanup

#37603 from Ben Slechta · Rule change · TB 25-04 (2025-04 Fastrack)

In T2 Spec Lines, Nissan 350Z Track/ Touring/ Standard/ Nismo Spec Z (03-08), change Notes as follows:
"Nissan Motorsports: Shock Front left P/N E6110-SZ350 & Front right E6111-SZ350 & rear E6210-SZ350, Springs front P/N
54010-SZ350 & rear 55020-SZ350, F&R 5600S-SZ350, Front roll bar #54611-SZ350, Rear roll bar #562300-SZ350, Bushings P/N
(54541, 54560, 55045, 55148, 55149, 55152, 55153, 55158, 56218) - RRZ30 allowed. Nismo flywheel permitted. SPC Control
Arms 72125 and 72123 are allowed. Aftermarket flywheel permitted at minimum 14lbs. Aftermarket headers permitted, cold air
intake permitted. Aftermarket big brake kit 4 piston front permitted up to 355x32 SPL pro V3 front upper camber caster control
arms for the 350z part# SPLFUAZ33 permitted. SPL rear toe links part# SPL RTA Z33 permitted. Stillen part #400338 permitted.
44011-RC350 rear caliper kit permitted, 43206-SZ350 Right rotor permitted, 43207-SZ350 Left rotor permitted. Must conform to

2025-05-01 T2 C6 T-2 Corvette 6 Liter Engine Restrictor

#37490 from Joe Aquilante · Rule change · TB 25-05 (2025-05 Fastrack)

In T2 Spec Lines, Chevrolet Corvette C6 Coupe / Grand Sport (05-13), Required Restrictor, change as follows:
LS2: "63mm 67mm FPR"

2025-05-01 T2 370Z Mid link Replacement for True Coil Overs and OEM Wheel Size

#38014 from Zachary Hayward · Rule change · TB 25-05 (2025-05 Fastrack)

In T2 Spec Lines, Nissan 370Z (09-17) / 370Z NISMO Edition (09-17), change as follows:
Max Wheel Size: "19 x 10 10.5"
Notes: "5300S-SS370 T-2 spring kit allowed; 54600-SS370 Sway Bars allowed 35mm (f). 29mm (r) Sports Package is allowed.
Springs up to 1000 lbs/in front and rear allowed. 54010- SZ350 (F) and 55020-SZ350 (R) allowed. Cold Air Intake allowed.
Performance Alternative Header permitted. Rear spring relocation permitted to allow coil over shocks. SPL suspension kit
permitted that includes: rear camber arms #SPL RLL Z34 or Nismo 551A0-RLLRZ, , SPL rear traction arms #SPL RTR Z34, or Nismo
55110-RTRRZ SPL front camber arms #SPL FUA Z34,or 54525-FUAZ4 SPL rear mid link #SPL RML Z34 or Nismo 551B0-RMLZ4. SPL
Part# SPL RTA Z34D or NISMO Part# 551B0-RTARZ permitted. Zspeed and Z1 alternative clutch slave permitted. The following

2025-05-01 STU Wheel Size Inconsistency

#38018 from David Fiorelli · Rule change · TB 25-05 (2025-05 Fastrack)

In GCR, Section 9.1.4.1.F.1., change as follows:
"Wheels may not exceed 18 inches in diameter. or 8.0 inches in width for vehicles 2950 lbs. and under minimum allowed race
weight. Vehicles over 2850 minimum allowed race weight may use a 9 inch wide wheel. Cars equal to or less than 2,850 lbs.
minimum allowed race weight may not use wheels wider than 8 inches. Cars greater than 2,850 lbs. minimum allowed race
weight may not use wheels wider than 9 inches."

2025-05-01 T3 S550 Mustang

#38061 from Scotty B White · Rule change · TB 25-05 (2025-05 Fastrack)

In T3 Spec Lines Ford Mustang V6 (15-17), change as follows:
Weight: "3400 3350"
Notes: "Rear spring relocated to shock allowed. 800lbs springs (F/R) allowed. Track/ Performance Package parts permitted.
Optional: 6 speed automatic transmission (with paddle shifters). Sway bars allowed up to 38mm (F) 28mm (R). Ford Motorsports
6-piston M2300V 380mm brake kit allowed with +50lb penalty, or optional 2-piece rotor 355mmmax Brembo brake kit #M-
2300-S allowed. Cold air intake permitted."

2025-05-01 T3 correct letter 37421

#38204 from Touring Committee · Rule change · TB 25-05 (2025-05 Fastrack)

In T3 Spec Lines, BMW Spec E46, change Notes as follows:
"Must conform to all SpecE46 rules Version 2.10. Version 1.1 dated Jan. 6, 2025. Version 3.0."

2025-05-01 T2 T2 Cadillac tire

#38210 from Touring Committee · Rule change · TB 25-05 (2025-05 Fastrack)

In T2 Spec Lines, CT4-V Blackwing (2022-), change Tire Size Max as follows:
“295 315”

2025-05-01 STU Table C: STU-GT3U Clarification

#38268 from Club Racing Board · Rule change · TB 25-05 (2025-05 Fastrack)

In STU Spec Line, Table C: STU-GT3U, change as follows:
Minimum Weight: “Current GT3 race weight plus 250 225 pounds”
Notes: "DOT approved tire with maximum section width of 245. GT3 cars base wheel is a maximum of 15”x9”. 18”x9” wheels
allowd with a 3% weight addition. GT3 cars utilizing 15”x7” wheels are limited to a maximum section width of 225 with a 25
pound weight reduction"
"All GT3U (Majors and Runoffs) cars using up to 15"x7" wheels limited to 225 section width tires shall run at current GT3 race
weight plus 225lbs. All Gt3U cars shall run a DOT approved tire with a maximum section width of 245. GT3U cars are allowed
optional 15"x9" wheels with a 1.5% weight addition or up to 18"x9" wheels with a 3.0% weight addition to the total weight

2025-07-01 STU 2.8-3.2L N/A Engine Allowances

#38007 from Ben Slechta · Rule change · TB 25-07 (2025-07 Fastrack)

In GCR, Section 9.1.4.G.1, add the following:
"A maximum section width of 245 is permitted. Cars over 3150 lbs. may run a 275 tire with a 2% weight adder."

2025-07-01 T3 correct letter 37421

#38204 from Touring Committee · Rule change · TB 25-07 (2025-07 Fastrack)

In T3 Spec Lines, BMW Spec E46, change Notes as follows:
"Must conform to all SpecE46 rules Version 2.10. Version 1.1 dated Jan. 6, 2025. Version 3.0."

2025-07-01 STU 2006-2015 Mazda Miata Intake Manifold

#38422 from German Candelario Candelario · Rule change · TB 25-07 (2025-07 Fastrack)

In STU, Table A, Mazda MZR (LF, L3, L5), change Notes as follows:
"May use Goodwin Part # 61-2510 or Gato Performance Part #31972 Intake manifold . "

2025-07-01 STU Requesting Approval of the JDM Honda h23a

#38489 from Eric Fiest · Rule change · TB 25-07 (2025-07 Fastrack)

In STU, Table B, classify Honda JDM H23a as follows:
STU Maximum Displacement (cc's) Minimum Weight Notes
Honda JDM H23a 2259 Chart Must meet all ST engine regulations.

2025-08-01 T3 Incorrect Touring Heading

#38451 from Terry Hanushek · Rule change · TB 25-08 (2025-08 Fastrack)

In T2-T4 Spec Lines, change Table Header as follows:
"T2 ET"

2025-08-01 T2 Incorrect Touring Heading

#38451 from Terry Hanushek · Rule change · TB 25-08 (2025-08 Fastrack)

In T2-T4 Spec Lines, change Table Header as follows:
"T2 ET"

2025-08-01 GT2 Rear Deck Lid for Older Air-Cooled Porsche

#38506 from Justin Erion · Rule change · TB 25-08 (2025-08 Fastrack)

In GT2 Spec Lines, GT2 Cars-Porsche, 911 Coupe & Targa., add to Notes the following:
"Porsche 911-based race cars (911,963,994), the use of the 993 3.8 RSR rear deck lid/spoiler is permitted. Aftermarket
reproductions of the original Porsche Motorsports deck lid provided they faithfully replicate OEM dimensions and functionality,
are acceptable for use."

2025-08-01 T2 Clarifications needed to BMW M2 CS cup line

#38536 from Joe Aquilante · Rule change · TB 25-08 (2025-08 Fastrack)

The BMW M2 CS Clubsport is classed in T1, not T2. Please visit the following web address for vehicle details about the car's base
allowances-
https://www.bmwusa.com/motorsport/bmw-m2-
cs.html#:~:text=The%20BMW%20M2%20CS%20Racing%20models%20are%20powered%20by%20a,M2%20CS%20Racing%20Rec
ommended%20Mileage.
In T2 Spec Lines, BMW M2 CS Cup 2020, change as follows:
Model: "BMW M2 CS Cup 2020-2021"
Notes: "DOT approved tires required. All other components must be as homologated from BMW Motorsports. No other changes

2025-08-01 T2 Fix brake allowance supersessions.

#38554 from Touring Committee · Rule change · TB 25-08 (2025-08 Fastrack)

In T2 Spec Lines, change Brakes as follows:
Chevrolet Corvette C-5 Incl. Fxd Cpe (98-04) Z06 (hardtop) (01-04): "(F) 325 Vented Disc (R) 305 Vented Disc May use two piece
steel rotors with aluminum hats up to 5% larger than 340/330; Any four piston calipers and brackets are permitted. Any brake
caliper pistons are allowed; may use the Wilwood SL6R brake caliper. Stock calipers and rotors only (F) 325 (R) 305"
Chevrolet Corvette C6 Coupe / Grand Sport (05-13): "(F) 325 / 340 Vented Disc (R) 305 / 330 Vented Disc or (F) 355 x 32 Vented
Disc (R) 340 x 26 Vented Disc or May use 2-pc steel rotors with alum. hats up to 5% larger than Z51 rotor. LS2 may use Grand
Sport brake package. Any brake caliper pistons allowed. May use any four piston brake caliper and brackets. Z06 brake calipers
allowed."

2025-08-01 STU STU-TCR Adjustments

#38723 from Club Racing Board · Rule change · TB 25-08 (2025-08 Fastrack)

In STU Spec Lines, Table C: STU-GT3U, GT3-TCR, change as follows: Remove the current TCR spec line and add the TCR spec lines
from GT3 that are being removed, adding the below to the notes.
"DOT approved tire with maximum section width of 245. May run DOT approved tire with maximum section width of 275 with
100 150 pound weight adder. May not run A-compound with 275. STU-TCR spitters and side valance must comply with
9.1.4.D.3.f. STU-TCR chassis ride height must comply with 9.1.4.1.A.1."

2025-08-01 STU Lotus Weight Reduction

#38772 from Club Racing Board · Rule change · TB 25-08 (2025-08 Fastrack)

In 9.1.2. GT2/ST Spec Lines, Lotus Evora GT4, change Weight as follows:
"2750 2700"
In STU Table B: Alternate Vehicle and Engine Allowances, change Weight as follows:
Lotus Elise Cup R: "2300 2250"
Lotus Elise SC/ Lotus Exige SC: "2300 2550
2500 2450"

2025-08-01 T2 C5 Corvette correction

#38782 from Touring Committee · Rule change · TB 25-08 (2025-08 Fastrack)

In T2 Spec Lines, Chevrolet Corvette C-5 Incl. Fxd Cpe (98-04) Z06 (hardtop) (01-04), change Restrictor Required as follows:
"LS1: 59 58mm FPR,
LS2: 63mm FPR,
LS3: 56mm FPR,
LS6: 58mm FPR"

Applies to Chevrolet Corvette on this page: Josh Carroll, David Holmes, Patrick Howe, Evan Gold, Greg Nester, Michael Cheney, Luis Martinez

2025-09-01 STU Lotus Weight Reduction E&O

#38919 from Club Racing Board · Rule change · TB 25-09 (2025-09 Fastrack)

In STU Table B: Alternate Vehicle and Engine Allowances, change Weight as follows:
Lotus Elise SC/ Lotus Exige SC: "2450 2250"

2025-11-01 T3 Make the S2000 Competitive Again

#38470 from David Mead · Rule change · TB 25-08 (2025-08 Fastrack)

In T3 Spec Lines, Honda S2000 (all) (00-09), change as follows:
Max Wheel Size: "(Effective 11/1/2025) 17 x 9.0 (f) 17 x 10 (r)"
Tire size: "(Effective 11/1/2025) 245 255 (f) 275 (r)"
Notes: "(Effective 11/1/2025) CAI allowed, Header allowed."

2025-11-01 STU Non-Homologated Engine Swaps - Specifically K24A2 w/ Honda CRZ

#38746 from William Rori · Rule change · TB 25-09 (2025-09 Fastrack)

In STU Spec Lines, Table B: Alternate Vehicle and Engine Allowances, Honda K24, change Weight as follows:
"(Effective 11/1/2025) Chart + 2%"

2025-11-01 T3 ND Gearset Request for T4

#39166 from Josh Smith · Rule change · TB 25-11 (2025-11 Fastrack)

In T4 Spec Lines, Mazda MX5 Miata/Club/ RF (19-24), add to Notes the following:
"Gear kit Kit PT#- 0000-02-6100."
In T4 Spec Lines, Mazda MX-5 Miata/Club (16-18), add to Notes the following:
"Gear kit Kit PT#- 0000-02-6100."
In T3 Spec Lines, Mazda MX-5 Miata (16-18), add to Notes the following:
"Gear kit Kit PT#- 0000-02-6100."
In T3 Spec Lines, Mazda MX-5 Global Cup Miata (2016-2021) ND1, ND, add to Notes the following:
"Gear kit Kit PT#- 0000-02-6100."

2025-11-01 T2 ND Gearset Request for T4

#39166 from Josh Smith · Rule change · TB 25-11 (2025-11 Fastrack)

In T4 Spec Lines, Mazda MX5 Miata/Club/ RF (19-24), add to Notes the following:
"Gear kit Kit PT#- 0000-02-6100."
In T4 Spec Lines, Mazda MX-5 Miata/Club (16-18), add to Notes the following:
"Gear kit Kit PT#- 0000-02-6100."
In T3 Spec Lines, Mazda MX-5 Miata (16-18), add to Notes the following:
"Gear kit Kit PT#- 0000-02-6100."
In T3 Spec Lines, Mazda MX-5 Global Cup Miata (2016-2021) ND1, ND, add to Notes the following:
"Gear kit Kit PT#- 0000-02-6100."

2025-11-01 T3 ND Spec Lines Wrong PT#'s

#39170 from Josh Smith · Rule change · TB 25-11 (2025-11 Fastrack)

In T4 Spec Lines, Mazda MX5 Miata/Club/ RF (19-24), change Notes as follows:
"Factory bolt-in roll bar/ cross member may be removed to facilitate roll cage installation. The following item(s) must remain
stock: transmission differential unless specified below. Retractable hardtop option permitted but must be disabled from moving
action and positively fastened. Any OEM or aftermarket hardtop is permitted that retains the OEM roof silhouette, including
Mazda hardtop part #0000-07-5902-ND and part #0000-07-5901 (discontinued DG Motorsports). 29mm (f) 16mm (r) sway bars
allowed. 3rd and 4th gear may be replaced with the following parts- (0000-02-5803-02, 0000-02-5803-01, 0000-02-5804-02,
0000-02-5804-01). Suspension package permitted with a 100 lbs. weight increase that includes the following parts: front springs
#0000-04-9700-08, springs up to 500lb front and 300lb rear allowed. Mazda tower brace 0000-04-5626 allowed. Mazda header

2025-11-01 T2 ND Spec Lines Wrong PT#'s

#39170 from Josh Smith · Rule change · TB 25-11 (2025-11 Fastrack)

In T4 Spec Lines, Mazda MX5 Miata/Club/ RF (19-24), change Notes as follows:
"Factory bolt-in roll bar/ cross member may be removed to facilitate roll cage installation. The following item(s) must remain
stock: transmission differential unless specified below. Retractable hardtop option permitted but must be disabled from moving
action and positively fastened. Any OEM or aftermarket hardtop is permitted that retains the OEM roof silhouette, including
Mazda hardtop part #0000-07-5902-ND and part #0000-07-5901 (discontinued DG Motorsports). 29mm (f) 16mm (r) sway bars
allowed. 3rd and 4th gear may be replaced with the following parts- (0000-02-5803-02, 0000-02-5803-01, 0000-02-5804-02,
0000-02-5804-01). Suspension package permitted with a 100 lbs. weight increase that includes the following parts: front springs
#0000-04-9700-08, springs up to 500lb front and 300lb rear allowed. Mazda tower brace 0000-04-5626 allowed. Mazda header

2025-11-01 T2 Touring 2 Post-Runoffs BOP Adjustments and Changes

#39274 from Touring Committee · Rule change · TB 25-11 (2025-11 Fastrack)

In T2 Spec Lines, Spec Corvette, change as follows:
Weight: "SC3200 SC+- 3300 See notes section"
Notes: "The following “Spec Corvette +” allowances are permitted with a base weight of 3300 lbs:"
In T2 Spec Lines, Ford Mustang GT 5.0L (11-14), change Restrictor as follows:
"60mm 62mm flat plate restrictor"
In T2 Spec Lines, Ford Mustang GT 5.0L (2015-23), change Tire Size as follows:
"295 315"
In T2 Spec Lines, Porsche 911 / 996 (98-05), change Weight as follows:

Applies to Ford Mustang on this page: Scotty B White

2025-11-01 T2 Adjust rev limit on Spec Corvette in T2

#39282 from Touring Committee · Rule change · TB 25-11 (2025-11 Fastrack)

In T2 Spec Lines, Spec Corvette, add to Notes the following:
"7) up to 7100 rpm Rev limit."

2025-12-01 T2 Help the 2011-2014 s197Mustang GT and Boss302 Less Restriction

#38523 from Joe Aquilante · Rule change · TB 25-12 (2025-12 Fastrack)

In T2 Spec Lines, Ford Mustang Boss 302 (12-13), change Restrictor as follows:
"56mm 63mm flat plate restrictor"
In T2 Spec Lines, Ford Mustang GT 5.0L (11-14), change Restrictor as follows:
"60mm 65mm flat plate restrictor"

Applies to Ford Mustang on this page: Scotty B White

2025-12-01 STU Turbo Inlet Restrictor Table

#38961 from John Weisberg · Rule change · TB 25-12 (2025-12 Fastrack)

In GCR, Section 9.1.4.H.3, change chart as follows:

A specification table follows in the original; it is not shown here.

2025-12-01 STU 275 Tire Rule

#38983 from Peter Federlin · Rule change · TB 25-12 (2025-12 Fastrack)

In GCR, Section 9.1.4.G.1., change as follows:
"A maximum section width of 245 is permitted. Cars over 3150 lbs. may run a 275 tire with a 2% weight adder."

2025-12-01 T2 Improving Competitiveness of Gen 5 Camaro SS

#39021 from Van Hunter · Rule change · TB 25-12 (2025-12 Fastrack)

In T2 Spec Lines, Chevrolet Camaro SS/1LE (10-15), change Weight as follows:
"3625 3575"

2025-12-01 T3 T3 Ecoboost Mustang clarification

#39236 from Touring Committee · Rule change · TB 25-12 (2025-12 Fastrack)

In T3 Spec Lines, Ford Mustang EcoBoost (2015-), change Notes as follows:
", or optional 2-piece rotor 355mm max Brembo brake kit #M-2300-S allowed with +50lb penalty."

Applies to Ford Mustang on this page: Scotty B White, Roger Eagleton, Matt Lituchy, Michael Lowe, Rick Luckett

2025-12-01 T2 Adjust T2 Darkhorse R

#39346 from Andrew Aquilante · Rule change · TB 25-12 (2025-12 Fastrack)

In T2 Spec Lines, Ford Mustang Challenge, change as follows:
Car: "Ford Mustang Challenge Darkehorse/Cup Dark Horse R (2024-)
Displacement: "92.220 x 92.7 / 4957 93.0mm x 92.7mm 5038cc"
Weight: "3650 3775 3825"
Restrictor: "2 x 55 mm"
Tires: "295 315"
Notes: "Safety and camera equipment is unrestricted."
"**This car spec line is not eligible for the Runoffs until it has competed in 3 Super Tour events.**

Applies to Ford Mustang on this page: Scotty B White

2025-12-01 STU STU Honda Engine weight penalty

#39375 from Super Touring Committee · Rule change · TB 25-12 (2025-12 Fastrack)

In STU Spec Lines, Table B: Alternate Vehicle and Engine Allowances, change Minimum Weight as follows:
Honda K20: "Chart + 2%"
Honda K24: "Chart + 2%"

2026-01-01 GT2 Additional Body Options to Replace Older Stock Car Bodies

#39086 from Samuel Daniels · Rule change · TB 26-01 (2026-01 Fastrack)

In GCR, Section 4.8.4.2.1., add the following:
"Cars in the class must use 1997, through current year, commercially available stock car bodywork. The following make/model
bodies are allowed:
1. Cadillac CTS
2. Chevrolet Impala
3. Chevrolet Malibu
4. Chevrolet Monte Carlo
5. Chevrolet SS

2026-01-01 T3 Request to Allow Spec Mustang to Touring 3 in Appendix M Trim

#39196 from Roger Eagleton · Rule change · TB 26-01 (2026-01 Fastrack)

In T3 Spec Lines, Ford Spec Mustang, change as follows:
Restrictor: "Two 44mm 45mm holes"
Weight: "3450 3400"

Applies to Ford Mustang on this page: Scotty B White, Roger Eagleton, Matt Lituchy, Michael Lowe, Rick Luckett

2026-01-01 T3 Tire Help for Spec E9X in T3

#39222 from Benjamin Phillips · Rule change · TB 26-01 (2026-01 Fastrack)

In T3 Spec lines, BMW Spec 9X, change as follows:
Car: "BMW Spec 9X BMW Spec E9X"
Notes: "Must conform to all SpecE9X rules Version 2.10. Spec E9X spec tire permitted or any DOT permitted up
to 225 255 permitted. No other touring allowances permitted. Engines may not be modified unless specified in the Spec E46
rules and must conform to touring tech procedures. Driver must possess a current copy of the rules. Dyno results do not ensure
engine compliance. THIS SPEC LINE DOES NOT QUALIFY FOR SCCA RUNOFFS COMPETITION UNTIL IT HAS BEEN REPRESENTED IN
3 SCCA SUPER TOUR EVENTS."

2026-01-01 T3 SpecE46 Tire Sizing

#39292 from Rob Piekarczyk · Rule change · TB 26-01 (2026-01 Fastrack)

In T3 Spec Lines, BMW SpecE46, change Notes as follows:
"Must conform to all SpecE46 rules Version 3.0. SpecE46 spec tire permitted or any DOT permitted up to 225 245 permitted. No
other touring allowances permitted. Engines may not be modified unless specified in the Spec E46 rules and must conform to
touring tech procedures. Driver must possess a current copy of the rules. Dyno results do not ensure engine compliance. SE46
HP limit does not apply."

2026-01-01 GT2 GT3 Turbo to GT2?

#39365 from Chris Edens · Rule change · TB 26-01 (2026-01 Fastrack)

In GT2 Spec Lines, Engines - MAZDA, classify Engine Family BP as follows:
GT2 Engines - MAZDA
Engine
Family
Engine Type Bore x Stroke
(mm)
Disp.
(CC)

A specification table follows in the original; it is not shown here.

2026-01-01 T3 Alternate Placement of Fuse Panel and Electronics Request

#39370 from Aaron Stehly · Rule change · TB 26-01 (2026-01 Fastrack)

In GCR, Section 9.1.9.2.D.9.d, add the following:
"8. Under-dash electronics including computers, modules and fuse boxes may be relocated so they can be easily accessed after
roll cage installation."

2026-01-01 T2 Alternate Placement of Fuse Panel and Electronics Request

#39370 from Aaron Stehly · Rule change · TB 26-01 (2026-01 Fastrack)

In GCR, Section 9.1.9.2.D.9.d, add the following:
"8. Under-dash electronics including computers, modules and fuse boxes may be relocated so they can be easily accessed after
roll cage installation."

2026-01-01 T2 Rebalance Blackwing Cadillac T2 for 2026

#39426 from John Heinricy · Rule change · TB 26-01 (2026-01 Fastrack)

In T2 Spec Lines, Cadillac CT4-V Blackwing (2022-), change Weight as follows:
"3800 3750"

2026-01-01 T2 C6 LS2 Corvette Parity Request

#39472 from Brian LaCroix · Rule change · TB 26-01 (2026-01 Fastrack)

In T2 Spec Lines, Chevrolet Corvette C6 Coupe / Grand Sport (05-13), change Restrictor as follows:
"LS2: 67mm 80mm FPR LS3: 56mm FPR"

2026-01-01 T2 T2 Tire Sizing

#39490 from Scotty B White · Rule change · TB 26-01 (2026-01 Fastrack)

In T2 Spec Lines, Dodge Viper SRT10 incl. coupe (03-06), change Weight as follows:
"3675 3650"

2026-01-01 T2 Rear Spoiler for Mustang GT S550 (15-23)

#39499 from Andrew Aquilante · Rule change · TB 26-01 (2026-01 Fastrack)

In T2 Spec Lines, Ford Mustang GT 5.0L (2015-2023), add to Notes the following:
"Ford Track/Performance Package parts permitted. Performance pack aero parts #M-16600-FP and #M-16601-MPP permitted."

Applies to Ford Mustang on this page: Scotty B White

2026-01-01 T3 Clarify T4 Brake Rotor Allowance

#39503 from David Mead · Rule change · TB 26-01 (2026-01 Fastrack)

In GCR, Section 9.1.9.2.D.6.a.6., change as follows:
"In T2-Performance alternative rotors, including 2 piece rotors are permitted. Rotors must be within 5% of OE diameter or a
maximum diameter of 360mm.
In T3- Performance alternative rotors, including 2 piece rotors are permitted with a maximum diameter of 360mm.
T4- Performance alternative 1-piece rotors are permitted but rotors must meet the sizes listed in the spec line. Spec lines
showing alternate brake kits are also permitted to use 1-piece performance alternative rotors of the same size."

2026-01-01 T2 Clarify T4 Brake Rotor Allowance

#39503 from David Mead · Rule change · TB 26-01 (2026-01 Fastrack)

In GCR, Section 9.1.9.2.D.6.a.6., change as follows:
"In T2-Performance alternative rotors, including 2 piece rotors are permitted. Rotors must be within 5% of OE diameter or a
maximum diameter of 360mm.
In T3- Performance alternative rotors, including 2 piece rotors are permitted with a maximum diameter of 360mm.
T4- Performance alternative 1-piece rotors are permitted but rotors must meet the sizes listed in the spec line. Spec lines
showing alternate brake kits are also permitted to use 1-piece performance alternative rotors of the same size."

2026-01-01 STU Request for Permission on Aftermarket Turbo Kit and Intake

#39529 from John Grim · Rule change · TB 26-01 (2026-01 Fastrack)

In STU Spec Lines, Table A: Alternate Vehicle and Engine Allowances, Mazda MZR (LF, L3, L5), change Notes as follows:
"Short blocks, heads, and intakes may be freely swapped within these engine designations. May use Goodwin Part # 61-
2510 or, Gato Performance Part #31972 or Jack Spania Racing 70 mm sheet-metal aluminum Intake manifold. Must use stock
throttle body or Acura part number 16400-PND-A17."
In STU Spec Lines, Table A: Alternate Vehicle and Engine Allowances, classify Mazda MZR (LF, L3, L5) Turbo as follows:
STU Maximum Displacement (cc's) Minimum Weight Notes
Mazda MZR (LF, L3,
L5) Turbo

2026-01-01 GT2 Tech Bulletins for GT2 and GT2-ST

#39537 from Grand Touring Committee · Rule change · TB 26-01 (2026-01 Fastrack)

In GT2 Spec Lines, GT2 Cars – Porsche, classify 992.1 GT3 Cup as follows:
GT2 Cars – Porsche
Model Year Body
Style Driveline Wheel Base Notes
992.1
GT3 Cup
(22-25) 2 Dr RWD 4.0L flat six. 3250lbs. w/60mm Throttle Body Restrictor (TBR).
Cars must be prepared in accordance with the appropriate

2026-02-01 T2 Request to Add 2014-2017 435i to T2

#38991 from Jimmy Cabrera · Rule change · TB 26-02 (2026-02 Fastrack)

In T2 Spec Lines, classify as follows BMW 435I (2014-2017):

A specification table follows in the original; it is not shown here.

2026-02-01 GT2 Allow Larger Air Cooled Engines in Porsche 911 GT2

#39249 from Justin Erion · Rule change · TB 26-02 (2026-02 Fastrack)

In GT Spec Lines, create GT Cars - PORSCHE and classify SC as follows:
GT Cars - PORSCHE
Model Years Body Style Drive- line Wheel- base
(in)
Notes
SC 1978 2 Dr. Rear engine/RWD 89.45 May use alternate engine bore.
4.0L 2V @2275 lbs. 4.0L 4V @ 2350 lbs.

2026-02-01 T2 Consideration for Nissan Z & NISMO Z to Touring 2 Class

#39296 from Greg Nelson · Rule change · TB 26-02 (2026-02 Fastrack)

In T2 Spec Lines, classify Nissan Z incl. Nismo as follows:

A specification table follows in the original; it is not shown here.

2026-02-01 GT2 Classify T1 BMW in GT2

#39408 from Jared Lendrum · Rule change · TB 26-02 (2026-02 Fastrack)

In GT Spec Lines, classify M3 E92 in GT Cars - BMW as follows:
GT Cars - BMW
Model Years Body Style Drive-
line
Wheel-
base (in)
Notes
M3 E92 (08-13) 2 Dr. RWD 108.7 Cannot be built to any other rule set.

A specification table follows in the original; it is not shown here.

2026-02-01 T3 Please change 2011-2014 Mustang V6 Spec Line to 2005-2014

#39558 from Matthew Miller · Rule change · TB 26-02 (2026-02 Fastrack)

In T3 Spec Lines, Ford Mustang V6 (11-14) , add to Notes the following:
"2005-2010 chassis/body permitted."

Applies to Ford Mustang on this page: Scotty B White, Roger Eagleton, Matt Lituchy, Michael Lowe, Rick Luckett

2026-02-01 T3 Nissan 350Z Weight Request

#39598 from David Muramoto · Rule change · TB 26-02 (2026-02 Fastrack)

In T3 Spec Lines, Nissan 350Z Track/ Touring/Standard/ Nismo (03-08), change Weight as follows:
DE Motor: "3125 3100"
HR Motor: "3275 3250"

2026-02-01 T3 Allow Alt Bushing Material in Toe Links

#39607 from David Mead · Rule change · TB 26-02 (2026-02 Fastrack)

In GCR, Section 9.1.9.D.5.a.1., change as follows:
"T2-T4: A maximum of 3.5 degrees of negative camber is allowed on front and rear suspensions. Spec line part(s) may not be
modified to increase caster and camber. Strut suspensions may adjust camber and caster by the use of eccentric bushings,
eccentric bolts (crash bolts) at the strut-to-spindle, and/or by use of slotted adjustment plates at the top of the strut mounting
plate. If upper strut slotted adjustment plates are used, they shall be located on existing chassis structure, utilizing the
unmodified manufacturer’s original bolt holes and may not serve as reinforcement for that structure. Slotted adjustment plates
(strut camber plates) may incorporate a single spherical bearing (spherical bushing) and a ball thrust bearing per strut tower. On
other forms of suspension, camber and caster adjustment may be achieved by the use of shims and/or eccentric

2026-02-01 T2 Allow Alt Bushing Material in Toe Links

#39607 from David Mead · Rule change · TB 26-02 (2026-02 Fastrack)

In GCR, Section 9.1.9.D.5.a.1., change as follows:
"T2-T4: A maximum of 3.5 degrees of negative camber is allowed on front and rear suspensions. Spec line part(s) may not be
modified to increase caster and camber. Strut suspensions may adjust camber and caster by the use of eccentric bushings,
eccentric bolts (crash bolts) at the strut-to-spindle, and/or by use of slotted adjustment plates at the top of the strut mounting
plate. If upper strut slotted adjustment plates are used, they shall be located on existing chassis structure, utilizing the
unmodified manufacturer’s original bolt holes and may not serve as reinforcement for that structure. Slotted adjustment plates
(strut camber plates) may incorporate a single spherical bearing (spherical bushing) and a ball thrust bearing per strut tower. On
other forms of suspension, camber and caster adjustment may be achieved by the use of shims and/or eccentric

2026-02-01 T2 Request for Classification of MG6 TCR in T2-TCR Class

#39702 from Vito Jin · Rule change · TB 26-02 (2026-02 Fastrack)

In T2-TCR Spec Lines, classify Link & Co 03 TCR (2019-2025) and MG6 TCR (2019-2022) as follows:
T2-TCR Transmission Power Level Weight(lbs) Notes
Link & Co 03
TCR (2019-
2025)
SEQ 90% 3000 DOT approved tires with maximum section width
of 275. T2-TCR splitter and valance must comply
with 9.1.4.D.3.f. T2-TCR chassis ride height must