B-Spec + GT2 + FP at Buttonwillow Raceway Park

2023-03-01 B-Spec Early Model Mini

#33363 from John Phillips · Rule change · TB 23-03 (2023-03 Fastrack)

Summary

As printed in Fastrack

In BSPEC Spec Lines, Mini Cooper (R56) MT (07-10), change Notes as follows:
“40 1mm FPR required with OE catalyst”
“OBX header part #10-2101-2S permitted with 40mm FPR.”
In BSPEC Spec Lines, Mini Cooper (R56) AT (07-10), change Notes as follows:
“40 1mm FPR required with OE catalyst”
“OBX header part #10-2101-2S permitted with 40mm FPR.”
In BSPEC Spec Lines, Mini Cooper Clubman (R55) (07 - 10), change Notes as follows:
“40 1mm FPR required with OE catalyst”

2023-03-01 B-Spec Helper Versus Tender springs.

#33866 from Frank Schwartz · Rule change · TB 23-03 (2023-03 Fastrack)

Summary

As printed in Fastrack

In B-Spec Category Specifications, GCR Section 9.1.10.E.36., change as follows:
"Suspension: competitors may use the OEM suspension, the specific suspension kit approved on the spec line or any B14 Bilstein
shock or strut with no modifications except as required for mounting or to achieve allowed camber. Any camber plate may be
used, but may not alter caster. Caster shall be within factory specification. Any part required to adapt the B14’s to the car must
be submitted for approval by the CRB and added to the individual spec line. Any spring, including ‘helper’ or ‘tender’ springs, up
to a maximum spring rate of 500 pounds may be used. Helper springs made of thin flat wire that are designed to take up the gap
between the main spring and shock/strut at full travel are allowed. Tender springs are not allowed. Spring are allowed to be
strapped or zip tied to the body. The purpose of the strap should be to keep the spring in place when the axle goes into rebound.

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)

Summary

As printed in Fastrack

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

2023-05-01 B-Spec T5 Rules Feedback

#33595 from Morgan Trotter · Rule change · TB 23-05 (2023-05 Fastrack)

Summary

As printed in Fastrack

In B-Spec, GCR Section 9.1.10.B, add as follows:
“9.1.10. B-SPEC and C-SPEC CATEGORY CATEGORIES
B-Spec (B-Spec)
C-Spec (C-Spec)
9.1.10 continues in the B-SPEC and C-SPEC Category Rules.”
In B-Spec, GCR Section 9.1.10.B-SPEC Category, change as follows:
“These specifications are presented as an adjunct to the Manufacturer’s Service Manual. They are not meant to supersede the
information that is in the manual that legitimately applies to the make, model, and year of car with the exception of the

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

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

Summary

As printed in 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)

Summary

As printed in 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 FP Classification Request for 1978 Toyota Celica

#34097 from Bob Pharr · Rule change · TB 23-05 (2023-05 Fastrack)

Summary

As printed in Fastrack

In FP Spec Lines, classify Toyota Celica (78-80) as follows:

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

2023-06-01 B-Spec T5 Mazda 3 Spec Line Addition

#33536 from Morgan Trotter · Rule change · TB 23-06 (2023-06 Fastrack)

Summary

As printed in Fastrack

In C-Spec Spec Lines, classify Mazda 3i Touring 2.0 Skyactive MT (12-13) as follows:

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

2023-06-01 B-Spec T5 Ride Height Rules.

#33552 from Michael Ogren · Rule change · TB 23-06 (2023-06 Fastrack)

Summary

As printed in Fastrack

In B-Spec and C-Spec Categories Specifications, GCR Section 9.1.10.E.15., add the following:
"Ride height: For B-Spec Minimum ride height is six (6) inches, for C-Spec Minimum ride height is five and a half (5½) inches,"

2023-06-01 B-Spec T5 Spring Allowance

#33557 from Mike Ogren · Rule change · TB 23-06 (2023-06 Fastrack)

Summary

As printed in Fastrack

In B-Spec and C-Spec Categories Specifications, GCR Section 9.1.10.E.36., add the following:
"Suspension: B-SPEC competitors may use the OEM suspension, the specific suspension kit approved on the spec line or any B14
Bilstein shock or strut with no modifications except as required for mounting or to achieve allowed camber. C-Spec competitors
may use the OEM Suspension, the specific suspension kit approved on the spec line or TBD. Any camber plate may be used, but
may not alter caster. Caster shall be within factory specification. Any part required to adapt the B14’s to the car must be
submitted for approval by the CRB and added to the individual spec line. Any spring, including ‘helper’ or ‘tender’ springs, up to
a maximum spring rate of 500 pounds may be used. for B-Spec the maximum spring rate is 500# front and rear, for C-Spec the
maximum spring rate is 600 pounds front and 800 pounds rear. Spring are allowed to be strapped or zip tied to the body. The

2023-06-01 B-Spec T5 Wheel Minimum Weight

#33558 from Mike Ogren · Rule change · TB 23-06 (2023-06 Fastrack)

Summary

As printed in Fastrack

In B-Spec and C-Spec Categories Specifications, GCR Section 9.1.10.E.8., add the following:
"Wheels: For B-Spec Required wheel/rim diameter is fifteen inches (15”). Maximum wheel/rim width is seven inches (7”).
Minimum Wheel/rim weight shall be 13 lbs. For C-Spec Required wheel/rim diameter is seventeen inches (17”). Maximum
wheel/rim width is eight inches (8”). Minimum Wheel/rim weight shall be 17 lbs.."

2023-06-01 B-Spec T5 Tire Options

#33641 from Frank Schwartz · Rule change · TB 23-06 (2023-05 Fastrack)

Summary

As printed in Fastrack

In B-Spec and C-Spec Categories Specifications, GCR Section 9.1.10.E.7.a., add the following:
"For B-Spec: Tires shall be Hankook 205/50R15 C51 or Hankook 200/580R15 Z217. No mixing of wet and dry
tires on the same car. For C-Spec: Tires shall be 225/45R17. DOT Tires must be run unmodified.

2023-06-01 B-Spec Allow ZZP Sonic Aluminum Radiator 1.68

#33660 from Brandon Vivian · Rule change · TB 23-06 (2023-05 Fastrack)

Summary

As printed in Fastrack

In B-Spec Spec Lines, Chevrolet Sonic 4dr Sedan MT (12-19), add to Notes as follows:
"Allow Aluminum Radiator #ZZP-ZZ013."
In B-Spec Spec Lines, Chevrolet Sonic 4dr Sedan AT (12-19), change as follows:
Car: "Chevrolet Sonic 4dr SedanHatch AT (12-19)"
Notes:"Allow Aluminum Radiator #ZZP-ZZ013."
In B-Spec Spec Lines, Chevrolet Sonic 4dr Hatch MT (12-19) , add to Notes as follows:
"6T40e automatic equipped only. 33 34mm flat plate restrictor required. GM suspension kit #23123679 permitted. Allow rear
sway bar ZZ Performance #ZZ-SNCRSB. Allow Aluminum Radiator #ZZP-ZZ013."

2023-06-01 B-Spec Fasteners for Bumper Caps

#33797 from Kent Carter · Rule change · TB 23-06 (2023-05 Fastrack)

Summary

As printed in Fastrack

In B-Spec and C-Spec Categories Specifications, GCR Section 9.1.10.E., add the following:
"47. Positive fasteners may be used to attach the bumper caps to the OEM bumper cap clips and may include a machine screw
and T-nut or a rivet-nut. Pointed screws such as self-drilling/tapping or sheet metal screws are prohibited."

2023-06-01 B-Spec Allow CAN Bus Connection to Data Systems

#33806 from Kent Carter · Rule change · TB 23-06 (2023-05 Fastrack)

Summary

As printed in Fastrack

In B-Spec and C-Spec Categories Specifications, GCR Section 9.1.10.E.29., change as follows:
"Lap Timing and Data Acquisition Devices that perform no function other than to relay lap times to the driver (Longacre Hot Lap,
Intercomp Lap Timer, etc.) are permitted, along with the required mounting hardware and connections. Stand-alone data
acquisition systems (GPS or accelerometer-based) are allowed. One connection from the OBD2 port to the stand-alone data
acquisition system is permitted. No additional sensors may be added and the data acquisition system must not tie into the
vehicle electronics in any other manner beyond this allowance. The SCCA may install a standalone data box in a
competitor’s car at any time. Refusal of the installation of the data box will result in disqualification. Analog (needle type) gauges
for oil pressure, oil temp and water temp may be added as long as they are not tied into the vehicles ECU in any way. Stand

2023-06-01 B-Spec Request Ford Fiesta weight reduction 25lbs

#33890 from Andrew Doyle · Rule change · TB 23-06 (2023-05 Fastrack)

Summary

As printed in Fastrack

In B-Spec Spec Lines, Ford Fiesta 5dr Hatchback (11-19), change Weight as follows:
"2495 2470"
In B-Spec Spec Lines, Ford Fiesta 4dr Sedan (11-19), change Weight as follows:
"2495 2470"

2023-06-01 B-Spec Threaded Metal Inserts for Plastic Intake Manifolds

#34164 from Kent Carter · Rule change · TB 23-06 (2023-06 Fastrack)

Summary

As printed in Fastrack

In B-Spec and C-Spec Categories Specifications, GCR Section 9.1.10.E., add the following:
"48. All cars which use throttle body to intake fasteners directly into a plastic intake, are allowed to convert the intakes to
accommodate a metal threaded insert. This is done for the sole reason that repeated removal of the restrictor plate wears the
threads in the intake and eventually causes the need to replace the intake."

2023-06-01 B-Spec BoB Adjustments

#34208 from Club Racing Board · Rule change · TB 23-05 (2023-05 Fastrack)

Summary

As printed in Fastrack

The popularity of BSPEC has brought heightened attention to the Balance of Performance (BoP). Given the wide diversity of
eligible cars and their designs, driving ability, car preparation/tuning levels, and other variables outside of SCCA’s control, the BoP
in this class has been remarkably close. As compared to IMSA’s job of balancing cars which are all professionally prepared, driven,
and highly instrumented, the job of our advisory committees and CRB is considerably more difficult. There are most certainly
outliers and cars which are superior under certain conditions, but in the absence of BoP regulations which vary from track to track
a perfect balance every weekend is not to be expected. The BoP is set by SCCA for what is perceived to be the ultimate tune and
best driver in a given car across the entire racing season and over as many tracks as can be reasonably sampled. If a car is not
prepared, tuned, and driven to its ultimate capability we cannot expect that it will be on par with cars of other manufacture which

2023-06-01 FP Request to Classify Sonic and Fiesta in HP

#34264 from Greg Amy · Rule change · TB 23-06 (2023-05 Fastrack)

Summary

As printed in Fastrack

In HP, adjust model years of the "Ford Fiesta (11-16)" spec line as follows:
"Ford Fiesta (11-16 9)"
In FP, adjust model years of the "Chevrolet Sonic (12-16)" spec line as follows:
"Chevrolet Sonic (12-16 9)"

2023-07-01 GT2 appendix letter #33635

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

Summary

As printed in 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 FP ITC to FP?

#34286 from David Snow · Rule change · TB 23-06 (2023-07 Fastrack)

Summary

As printed in Fastrack

In HP Spec Lines, Volkswagen Rabbit Cabriolet 1780, delete in its entirely:
In HP, Spec Lines, Volkswagen Rabbit, change Title as follows:
“Volkswagen Rabbit 1588 (includes Cabriolet / convertible)”
“Volkswagen Rabbit 1715 (81-84) (excl. conv.)”
“Volkswagen Rabbit GTI 1780 (83-84)”

2023-07-01 B-Spec Hyundai Accent Restrictor Plate

#34331 from Jose Fabian · Rule change · TB 23-06 (2023-07 Fastrack)

Summary

As printed in Fastrack

In B-Spec Spec Lines, Hyundai Accent GS Hatchback (13-19), change Notes as follows:
"39 41mm"

2023-07-01 B-Spec Hyundai Accent 2012 Model

#34332 from Jose Fabian · Rule change · TB 23-06 (2023-07 Fastrack)

Summary

As printed in Fastrack

In B-Spec Spec Lines, Hyundai Accent GS Hatchback (13-19), change model as follows:
"Hyundai Accent GS Hatchback (13 12 -19)"

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)

Summary

As printed in Fastrack

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

2023-07-01 FP Correct Intake Valve Size on 1500cc Midget/Spitfire

#34419 from Production Committee · Rule change · TB 23-06 (2023-05 Fastrack)

Summary

As printed in Fastrack

In FP Spec Lines, Austin-Healey Sprite Mk. I, II,III, IV MG Midget Mk I,II, III, IV & 1500, change Intake Valve Size as follows:
"(I) 36.65.3/(1.44)"
In FP Spec Lines, Triumph Spitfire Mk. IV & 1500, change Intake Valve Size as follows:
"(I) 36.65.5/(1.440)"
In HP Spec Lines, Triumph Spitfire 1500, change Intake Valve Size as follows:
"(I) 36.65.5/(1.440)"
In HP Spec Lines, Triumph Spitfire Mk. III & IV 1500, change Intake Valve Size as follows:
"(I) 36.65.5/(1.440)"

2023-09-01 B-Spec Initial car classifications and spec lines

#34461 from Kent Carter · Rule change · TB 23-09 (2023-09 Fastrack)

Summary

As printed in Fastrack

In C-Spec Spec Lines, add Chevrolet Cruze (10-16) as follows:

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

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

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

Summary

As printed in 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)

Summary

As printed in 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.

2023-11-01 B-Spec B-Spec Tire

#35034 from Club Racing Board · Rule change · TB 23-11 (2023-11 Fastrack)

Summary

As printed in Fastrack

RM 23-11 In GCR Section 9.1.10.7., change as follows:
"For the remainder of 2023, B-Spec entrants will be allowed to compete on both Hankook and Goodyear Tires. For B-Spec Tires
shall be Hankook 205/50R15 C51, or Hankook 200/580R15 Z217, P205/50ZR15 Goodyear Eagle RS (Dry tire) Catalog #D4850 or
P205/50ZR15 Goodyear Eagle RS-R (Wet tire) Catalog #D4851. For C-Spec: Tires shall be 225/45R17. No mixing of wet and dry
tires on the same car. Tires must be run unmodified. Effective 1-1-2024 Hankook Tires will be allowed at regional events only,
through 6-30-2024."

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)

Summary

As printed in 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 B-Spec Mazda 3i 2010-2013 5-Speed Manual Gear Ratios

#34820 from Dean Fehribach · Rule change · TB 23-12 (2023-12 Fastrack)

Summary

As printed in Fastrack

In C-Spec Spec Lines, Mazda 3i (10-13), change Gear Rations as follows:
"3.3, 3.84?? 1.84,
1.31, 0.97,
0.75”

2023-12-01 B-Spec Error Correction

#34955 from Frank Schwartz · Rule change · TB 23-12 (2023-12 Fastrack)

Summary

As printed in Fastrack

In C-Spec Spec Lines, Dodge Dart (14-16), change as follows:
Year: "(1413-16)"
Bore x Stroke(mm)/ Displ. (cc): "88.0 x 97.0 82.0
2360 1998"

2023-12-01 FP Porsche 944/924S Rule Change Request

#35002 from Adam Achepohl · Rule change · TB 23-12 (2023-12 Fastrack)

Summary

As printed in Fastrack

In EP Spec Lines, delete the Porsche 944/924S 2.5L (2V) (83-88) spec line entirely, and create a new spec line for Porsche
944/924S 2.5L(2V) 2.7L(2V) (83-89) as follows:

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

2023-12-01 FP FP and HP Toyota Corolla

#35030 from Keith Church · Rule change · TB 23-12 (2023-12 Fastrack)

Summary

As printed in Fastrack

In FP Spec Lines, Toyota Corolla 2TC (71-74), change weight as follows:
"1853 1810"
In HP Spec Lines, Toyota Corolla (71-74), change weight as follows:
“1960 1910
* 2009 1958
** 2058 2006”

2023-12-01 FP Triumph GT6 Adjustments

#35054 from ANTHONY PARKER · Rule change · TB 23-12 (2023-12 Fastrack)

Summary

As printed in Fastrack

In EP Spec Lines, Triumph GT6, change weight as follows:
"1830 1800"

2024-01-01 B-Spec B-Spec Hankook Tire for Regionals

#35055 from SCCA Staff · Rule change · TB 24-01 (2024-01 Fastrack)

Summary

As printed in Fastrack

In GCR, Section 9.1.10.E.7., change as follows:
"a. For the remainder of 2023, B-Spec entrants will be allowed to compete on both Hankook and Goodyear Tires. For B-Spec
Tires shall be Hankook 205/50R15 C51, Hankook 200/580R15 Z217, P205/50ZR15 Goodyear Eagle RS (Dry tire) Catalog #D4850
or P205/50ZR15 Goodyear Eagle RS-R (Wet tire) Catalog #D4851. Effective 1-1-2024 Hankook Tires will be allowed at regional
events only, through 6-30-2024. Effective 7-1-2024 Goodyear is the only legal specified tire allowed in B-spec for all events.
For C-Spec: Tires shall be 225/45R17. No mixing of wet and dry tires on the same car. Tires must be run unmodified. Effective 1-
1-2024 Hankook Tires will be allowed at regional events only, through 6-30-2024.
b. When using the Hankook wet tire, all cars get a 0.2” lower ride height allowance due to smaller radius of the wet tire."

2024-01-01 FP FP data

#35060 from Production Committee · Rule change · TB 24-01 (2024-01 Fastrack)

Summary

As printed in Fastrack

In FP Spec Line, Acura Integra LS (94-01), change weight as follows:
"2235 2260
*2291 2317
**2347 2373"
In FP Spec Line, Honda Del Sol VTEC (94-97), change weight as follows:
"2190 2265
*2245 2322
**2300 2378"

2024-01-01 FP Request to Review Z3 2.5 Spec Line

#35073 from Tim Schreyer · Rule change · TB 24-01 (2024-01 Fastrack)

Summary

As printed in Fastrack

In EP spec line, BMW Z3 2.5L, change weight as follows:
"2450 2500
*2511 2563
**2573 2625"

2024-01-01 B-Spec Update 12-19 Nissan Versa Spec Line & Adjust BOP

#35074 from Matt Wolfe · Rule change · TB 24-01 (2024-01 Fastrack)

Summary

As printed in Fastrack

In B-Spec Spec Lines, Nissan Versa (2012), change Model as follows:
"Nissan Versa Sedan (2012-2019)"
In B-Spec Spec Lines, Nissan Versa Note (2013), change as follows:
Model: "Nissan Versa Note Hatchback (2013-2019)"
Min Weight: "2550 2490"
In B-Spec Spec Lines, Nissan Versa (2013-), delete Spec Line in its entirety.

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

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

Summary

As printed in 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 B-Spec Clarifying the ECU and Data Acquisition language

#35236 from Kent Carter · Rule change · TB 24-01 (2024-01 Fastrack)

Summary

As printed in Fastrack

In GCR, Section 9.1.10.E.37., change as follows:
"ECU/PCM: OEM ECU/PCMs is required. Alternate engine calibrations are allowed. The car may meet federal emission
standards, but shall provide OBD II compliant data to the data link connector. Manufacturers may provide a stability control
override procedure or module. ECU/PCM: All electronic control systems (ECU/PCM/ABS, etc) must be unaltered, model-
appropriate US domestic market OE devices unless otherwise permitted on the spec line. Alternate engine calibrations are
allowed but no changes are permitted and no device capable of altering ECU characteristics may be present in the car from the
time the car enters the grid until after impound and any stewards’ actions. OBD II compliant data correct for the car must be
present at the data link connector. Malfunction codes (‘check engine light’) may be present. Manufacturers or competitors may

2024-01-01 FP Corrections to Honda Spec Lines in FP

#35250 from Jonathan Spiegel · Rule change · TB 24-01 (2024-01 Fastrack)

Summary

As printed in Fastrack

In FP Spec Lines, change Fuel Injected Equipped Throttle Body Inside Diameter as follows:
Acura Integra GSR (92-93): "58"
Honda Civic 1.5 (88-91): "NA 42"
Honda Civic EX (90-91): "55"
Honda Civic Si (88-91): “42 55”
Honda CRX 1.5 (88-91): “33 (primary) 42 (secondary) 42”
Honda CRX / CRX Si (84-87): ”42 33 (primary) 42 (secondary)”
Honda CRX Si (88-91): ”NA 55”

2024-01-01 FP Miata Alternate Head

#35253 from Don Tucker · Rule change · TB 24-01 (2024-01 Fastrack)

Summary

As printed in Fastrack

In EP Spec Lines, Mazda MX-5 /Miata 1.8L (90-97), change weight as follows:
"2200 2150"
Mazda MX-5 /Miata (94-97)
"2035 2000
*2086 2050
**2137 2100"

2024-01-01 FP Triumph GT6 Adjustments

#35255 from Anthony Parker · Rule change · TB 24-01 (2024-01 Fastrack)

Summary

As printed in Fastrack

In EP spec line, Triumph GT6, make the following change in the Notes section:
"Two (2) 1.75” auto-type carburetors @ 1970 40 lbs. Three (3) Weber 40 DCOE on IR manifold with 28mm chokes @ 1990
lbs. Laycock overdrive, May use 5 speed gearbox w/o overdrive. Three (3) Weber 40mm DCOE w/28mm venturi on individual
runner manifold @ 2020 lb."

2024-01-01 FP Honda S2000 throttle body

#35272 from Aaron Johnson · Rule change · TB 24-01 (2024-01 Fastrack)

Summary

As printed in Fastrack

In EP spec line, Honda S2000, make the following changes to its spec line:
Fuel Injected Equipped Throttle Body Inside Diameter: "62 64"
Notes: "Comp. Ratio limited to 12.0:1. Valve lift limited to .500”. An adaptor plate can be used to mount the 62mm throttle body
from '00-05 to the '06-09 intake manifold. The adaptor plate can be no more than 1.25" thick, and its bore must not exceed the
"Fuel Injected Equipped Throttle Body Inside Diameter" maximum spec of 64mm."

2024-01-01 FP Correction within Triumph TR8 Spec Line

#35315 from Production Committee · Rule change · TB 24-01 (2024-01 Fastrack)

Summary

As printed in Fastrack

In EP spec line, Triumph TR8 (78-81), move the "Dry sump allowed" wording to the appropriate location as follows:
Carburetor. No. & Type: “Zenith Stromberg carbs or fuel injection. Dry sump is allowed.”
Notes: “Comp. Ratio limited to 12.0:1, Valve lift limited to .500”. Dry sump is allowed.”

2024-01-01 FP Correction to EP 924S/944 Spec Line

#35317 from Production Committee · Rule change · TB 24-01 (2024-01 Fastrack)

Summary

As printed in Fastrack

In EP spec line, Porsche 944/924S 2.5L (2V) / 2.7L (2V) (83-89), change Weight as follows:

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

2024-02-01 B-Spec Split Spec Line of Automatic and Manual 2nd Gen (09-14) Fit

#35251 from Matt Wolfe · Rule change · TB 24-02 (2024-02 Fastrack)

Summary

As printed in Fastrack

In B-Spec Spec Lines, classify Honda Fit AT (09-14):
"09-14 Honda Fit AT"
Gear Ratios: "2.99, 1.68, 1.07, 0.76, 0.55"
Final Drive: "4.56"
Notes: Allow damper and spring set 51600F23SA100, Damper FR LH 51605F23SA100, Damper FR RH 51606F23SA100,
Damper RR 52610F23SA100, Spring adjust asy RR 52691F23SA010. Seat upper FR spring 51688F23SA200, 51402FC4YA00
front helper spring and 51403FC4YA00 front spacer permitted. Front Damper Mount P/N 51920-F23S-A30 is allowed.
Allow rear sway bar Progress # 62.1061. Allow Setrab 50-119-7612 transmission cooler in addition to OEM. Any

2024-02-01 B-Spec Equalize Mazda 2 Headers and clean up spec line

#35259 from Matt Wolfe · Rule change · TB 24-02 (2024-02 Fastrack)

Summary

As printed in Fastrack

In B-Spec Spec Lines, Mazda2 (10-14), change as follows:
Weight: "Effective 3-1-2024: 2280 2350"
Notes: "Helper springs F&R 0000-04-9926, Spring spacer F&R 0000-04-9925, Front sway bar end links adjstbl 0000-04-
2202, Rear sway bar 0000-04-2203-RR or 0000-04-2312, Modified strut bearing plate 0000-04-2204, Crash bolt set 0000-
04-2205, Allow rear torque bar Corksport #Mz2-3-070. Cold air intake Corksport Mz2-6-117-31100 and air duct Mz2-6-
120-10 are allowed. Effective 3-1-2024: Exhaust Header (cat delete) HB.EM 60-404-S-SS, HP-MZD001, or Mazda
Motorsports PN 0000-06-2410 permitted. Powerflex PFR19-1511BX2 rear suspension bushings allowed. Allow Mazda
part number 0000-01-2501-CR Radiator. Allow Mazda undertray part number DO8C-56- 110A, DO8C-56-311, DO7A-56-

2024-02-01 GT2 Rear Blade Spoiler Clarification

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

Summary

As printed in 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 B-Spec Rear Sway Bar Request for Nissan Versa and Versa Note 2013-

#35323 from Richard Osborne · Rule change · TB 24-02 (2024-02 Fastrack)

Summary

As printed in Fastrack

In B-Spec Spec Lines, Nissan Versa (2013-), change as follows:
Model: "Nissan Versa (2013-2019)"
Notes: "Hardrace HR-Q0146 19mm rear sway bar permitted."
In B-Spec Spec Lines, Nissan Versa Note (2013-), change as follows:
Model: "Nissan Versa Note (2013-2019)"
Notes: "Hardrace HR-Q0146 19mm rear sway bar permitted."

2024-02-01 B-Spec Eliminate Redundant Trans Cooler Rule

#35353 from Matt Wolfe · Rule change · TB 24-02 (2024-01 Fastrack)

Summary

As printed in Fastrack

In GCR, Section 9.1.10.E.44., eliminate and renumber accordingly:
"44. Auxiliary transmission coolers may be approved on a case by case basis. Part numbers must be submitted and
added to the cars spec line."

2024-02-01 B-Spec Fix Sonic Hatchback MT Spec Line

#35371 from Jonathan Wickert · Rule change · TB 24-02 (2024-01 Fastrack)

Summary

As printed in Fastrack

In B-Spec Spec Line, Chevrolet Sonic 5dr Hatch MT (12-19), add to Notes the following:
"Allow Aluminum Radiator #ZZP-ZZ013."

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)

Summary

As printed in Fastrack

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

2024-02-01 FP Update 1988-1991 Civic to Match 1988-1991 CRX

#35399 from Enrik Benazic · Rule change · TB 24-02 (2024-01 Fastrack)

Summary

As printed in Fastrack

In HP, make the following weight change:
Honda Civic 1.5 (88-91)
“2245 2175
*2301 2229
**2357 2284”

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

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

Summary

As printed in 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)

Summary

As printed in 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)

Summary

As printed in 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 B-Spec BOP Adjustment for Yaris iA, 2020+ Versa, and 07-08 Honda Fit

#35382 from Matt Wolfe · Rule change · TB 24-03 (2024-03 Fastrack)

Summary

As printed in Fastrack

In B-Spec Spec Lines, Honda Fit (07-08), change as follows:
Min weight: "2525 2400"
Notes: "Any Cold Air Intake Package allowed (any manufacturer). This configuration is not currently eligible for Runoffs
competition. This car must compete in three (3) separate Super Tour weekends so that performance data can be collected. In
addition to SCCA data box, OBDII data collected via an AIM or similar device must be submitted."
In B-Spec Spec Lines, Honda Fit (07-08) Automatic, change as follows:
Min weight: "2525 2400"
Add to Notes: "Any Cold Air Intake Package allowed (any manufacturer). This configuration is not currently eligible for Runoffs

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)

Summary

As printed in 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 B-Spec 07-08 Honda Fit Rear Sway Bar part #

#35473 from B-Spec/C-Spec Committee · Rule change · TB 24-03 (2024-03 Fastrack)

Summary

As printed in Fastrack

In B-Spec Spec Lines, Honda Fit (07-08) Automatic, change Notes as follows:
"Allow rear sway bar Progress # 62.1061 0."
In B-Spec Spec Lines, Honda Fit (07-08), add to Notes the following:
"Allow rear sway bar Progress # 62.1060."

2024-03-01 FP GCR Correction - Redundant HP Spec Lines

#35623 from Production Committee · Rule change · TB 24-03 (2024-03 Fastrack)

Summary

As printed in Fastrack

In HP Spec Lines, delete the following redundant spec lines in their entirety:
Spec line #10 - VW Rabbit Cabriolet 1780
Spec line #3 - VW Scirocco 1588
Spec line #4 - VW Scirocco 1780 (8-valve) (83-88)
Spec line #5 - VW Scirocco 1588

2024-03-01 FP Update FP Protege (01-03) Model Info

#35715 from Production Committee · Rule change · TB 24-03 (2024-03 Fastrack)

Summary

As printed in Fastrack

In FP Spec Lines, Mazda Protégé ES (01-03) change vehicle as follows:
"Mazda Protégé ES/5 (01-03)"

2024-04-01 B-Spec Change restrictor from 30mm to 31mm (2015+ Honda Fit) and add 50#

#34857 from Matt Downing · Rule change · TB 24-04 (2024-04 Fastrack)

Summary

As printed in Fastrack

In B-Spec Spec Lines, Honda Fit MT (15-19), change as follows:
Weight: ""2525 2550"
Notes: "30 31mm"
In B-Spec Spec Lines, Honda Fit MT (15-19), change as follows:
Weight: ""2525 2550"
Notes: "30 31mm"

2024-04-01 B-Spec Wheel Offset and Spacer Revision

#35466 from Kent Carter · Rule change · TB 24-04 (2024-04 Fastrack)

Summary

As printed in Fastrack

In GCR, Section 9.1.10.E.8., change as follows:
"Wheels: All wheels shall be one-piece metal castings or metal two piece welded. Wheels of any offset are permitted provided
the tire tread (the portion of the tire that contacts the ground) does not protrude beyond the fender opening when viewed from
the top perpendicular to the ground. Wheel spacers and aftermarket wheel studs/bolts are permitted. Wheel bolts may be
replaced with studs and nuts. Total offset must be the same left to right for an individual axle but may differ from front to rear.
For B-Spec Required wheel/rim diameter is fifteen inches (15”). Maximum wheel/rim width is seven inches (7”). Minimum
Wheel/rim weight shall be 13 lbs.
For C-Spec Required wheel/ rim diameter is seventeen inches (17”). Maximum wheel/rim width is eight inches (8”). Minimum

2024-04-01 B-Spec Set Expiration Date for Unused Spec Lines

#35742 from B-Spec/C-Spec Committee · Rule change · TB 24-04 (2024-04 Fastrack)

Summary

As printed in Fastrack

In B-Spec Spec Lines, Mini Cooper Countryman (R60) (11-16), add to Notes the following:
”**This Spec line will expire 1/1/2025 unless an appeal is filed on or before 12/1/2024.**”
In B-Spec Spec Lines, Mini Cooper Paceman (R61) (11-16), add to Notes the following:
”**This Spec line will expire 1/1/2025 unless an appeal is filed on or before 12/1/2024.** ”
In B-Spec Spec Lines, Nissan Versa (07-11) with 1797cc engine, add to Notes the following:
”**This Spec line will expire 1/1/2025 unless an appeal is filed on or before 12/1/2024.** ”

Applies to Mini Cooper on this page: Trenton Kramer, Thomas Lepper

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

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

Summary

As printed in Fastrack

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

2024-05-01 B-Spec Delete trim levels/update language for spec lines

#35746 from B-Spec/C-Spec Committee · Rule change · TB 24-05 (2024-05 Fastrack)

Summary

As printed in Fastrack

In B-Spec Spec Lines, change Model description as follows:
"Chevrolet Sonic 4dr Sedan MT (12-19)"
"Chevrolet Sonic 4dr Sedan AT (12-19)"
"Chevrolet Sonic 5dr Hatch Hatchback MT (12-19)"
"Chevrolet Sonic 5dr Hatch Hatchback AT (12-19)"
"Ford Fiesta 5dr Hatchback (11-19)"
"Ford Fiesta 4dr Sedan (11-19)"
"Honda Fit MT (07-08)"

2024-05-01 FP Request to Replace CRX Plastic Panels

#35876 from Darryl Saylor · Rule change · TB 24-05 (2024-05 Fastrack)

Summary

As printed in Fastrack

In FP spec line "Honda CRX / CRX Si (84-87)", add the following wording to the Notes section:
"The plastic OE front header/nose body panel, lower rocker side-skirt, and lower door cap panel can be replaced by a
replica, which may be constructed of an alternate material, provided its appearance remains stock."

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)

Summary

As printed in Fastrack

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

2024-05-01 FP FP data and parity

#35896 from Production Committee · Rule change · TB 24-05 (2024-05 Fastrack)

Summary

As printed in Fastrack

In the following FP spec lines, add the following wording to the Notes section:
Acura Integra (90-93)
Acura Integra LS (94-01)
Acura Integra GSR (92-93)
Honda Civic Del Sol VTEC (94-97)
Honda Civic Si (99-00)
"55mm Flat Plate Intake Restrictor is required."

2024-05-01 B-Spec Wheel Rules

#36066 from B-Spec/C-Spec Committee · Rule change · TB 24-05 (2024-05 Fastrack)

Summary

As printed in Fastrack

In GCR, Section 9.1.10.E.8., change as follows:
"Wheels: All wheels shall be one-piece metal castings or metal two piece welded. All four wheels must be the same dimensional
offset. Any offset is permitted so long as Wheels of any offset are permitted provided the tire tread (the that portion of the tire
that contacts the ground) does may not protrude beyond the fender opening when viewed from the top perpendicular to the
ground. Wheel spacers and aA ftermarket wheel studs/ and or wheel bolts are permitted allowed. Wheel bolts may be replaced
with studs and nuts. Wheel spacers are allowed, but must be the same thickness on all four corners.Total offset must be the
same left to right for an individual axle but may differ from front to rear.
B-Spec Required wheel/rim diameter is fifteen inches (15”). Maximum wheel/rim width is seven inches (7”). Minimum

2024-06-01 FP NIssan 300ZX Z31 to EP

#35830 from Murphy Nichols · Rule change · TB 24-06 (2024-06 Fastrack)

Summary

As printed in Fastrack

In EP Spec Lines, classify Nissan 300ZX (84-89), as follows:

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

2024-06-01 B-Spec Add B14 Kit Part # to Sonic Spec line In

#35969 from B-Spec/C-Spec Committee · Rule change · TB 24-06 (2024-06 Fastrack)

Summary

As printed in Fastrack

B-Spec Spec Lines, change Notes follows:
Chevrolet Sonic Sedan MT (12-19): "33mm flat plate restrictor required. GM suspension kit #2312 → 3679 permitted. Bilstein B14 kit
#47-171725 verified compatible."
Chevrolet Sonic Sedan AT (12-19): "33mm flat plate restrictor required. GM suspension kit #2312 → 3679 permitted. Bilstein B14 kit
#47-171725 verified compatible."
Chevrolet Sonic Hatchback MT (12-19): "34mm flat plate restrictor required. GM suspension kit #2312 → 3679 permitted. Bilstein
B14 kit #47-171725 verified compatible."
Chevrolet Sonic Hatchback AT (12-19): "34mm flat plate restrictor required. GM suspension kit #2312 → 3679 permitted. Bilstein

2024-06-01 B-Spec Eliminate redundant sway bar end link part #s from notes In

#35970 from B-Spec/C-Spec Committee · Rule change · TB 24-06 (2024-06 Fastrack)

Summary

As printed in Fastrack

B-SPEC Spec Lines, elimination from Notes the following:
Mazda2 (10-14): "Front sway bar end links adjstbl 0000-04-2202,"
Mini Cooper Hatchback (R50) MT (02 - 06): "Front adjustable sway bar links part number 31 35 6 771 is allowed. Rear adjustable
sway bar links part number 35 50 6 772 is allowed."
Mini Cooper Hatchback (R50) CVT (02 - 06): "Front adjustable sway bar links part number 31 35 6 771 is allowed. Rear adjustable
sway bar links part number 35 50 6 772 is allowed."
Mini Cooper (R56) MT (07-10): "Front adjustable sway bar links part number 31 35 6 771 is allowed. Rear adjustable sway bar
links part number 35 50 6 772 is allowed."

2024-06-01 B-Spec Update Fiat 500 Spec line In

#35990 from B-Spec/C-Spec Committee · Rule change · TB 24-06 (2024-06 Fastrack)

Summary

As printed in Fastrack

B-SPEC Spec Lines, Fiat 500 (12-15), change year as follows: "Fiat 500 (12-
15 7)"

2024-06-01 FP RX7 1993 and Up Request In EP Spec Lines, classify

#36031 from Edward Zabinski · Rule change · TB 24-06 (2024-06 Fastrack)

Summary

As printed in Fastrack

Mazda RX-7 (92-97) as follows:

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

2024-06-01 B-Spec Update (15-19) Honda Fit

#36067 from B-Spec/C-Spec Committee · Rule change · TB 24-06 (2024-06 Fastrack)

Summary

As printed in Fastrack

CVT Spec Line In B-SPEC Spec Lines, Honda Fit CVT (15-19), change as
follows:
Weight: "2525 2550"
Notes: "30 31mm"

2024-06-01 FP Clean-up Multiple EP RX-8 Spec Lines In EP

#36156 from Production Committee · Rule change · TB 24-06 (2024-06 Fastrack)

Summary

As printed in Fastrack

Spec Lines, make the following changes to the two Mazda RX-8 spec lines.
Remove spec line entirely:
Mazda RX-8 (04-11)
Remove the wording "alternate":
Mazda RX-8 (04-11)(alternate)
Spec Mazda (SM/SMX) None.

2024-07-01 B-Spec Clean up (15-19) Honda Fit MT & CVT Notes Sections

#36068 from B-Spec/C-Spec Committee · Rule change · TB 24-07 (2024-07 Fastrack)

Summary

As printed in Fastrack

In B-Spec Spec Lines, Honda Fit MT (15-19), change notes as follows:
"31mm flat plate restrictor required. Allow damper FR LH 51605F23SA81, Damper FR RH FR RH 51606F23SA81,
Damper RR 52610F23SA80, Spring adjust assy RR 52691F23SA80, Bushing Comp, Damper RR TBD, Camber
Adjuster Comp, Damper 51920F23SA82, Damper wrench kit 89211F23SA80, Hose Set, FR & RR Brake
01464F23SA810, Pad Set, XR2 D948 54022F27SA81, Disk, FR Brake 45250F23SA80, Air cleaner element assy
17220FC4YA80, Exhaust pipe assy 18300F23SA81, ACG belt (6PK858) 31110FC4YA80. Allow rear sway bar
Progress 62.1063."
In B-Spec Spec Lines, Honda Fit CVT (15-19), change notes as follows:

2024-07-01 B-Spec Set expiration date for Nissan Versa (09-11)

#36069 from B-Spec/C-Spec Committee · Rule change · TB 24-07 (2024-07 Fastrack)

Summary

As printed in Fastrack

In B-Spec Spec Lines, Nissan Versa (09-11), add to notes the following:
"**This Spec line will expire 1/1/2025 unless an appeal is filed on or before 12/1/2024.**"

2024-07-01 B-Spec Delete Redundant Rule 25

#36075 from B-Spec/C-Spec Committee · Rule change · TB 24-07 (2024-07 Fastrack)

Summary

As printed in Fastrack

In B-Spec, GCR Section 9.1.10.E.25., remove in its entirety and renumber.

2024-07-01 GT2 GT2-ST Rule Clarification

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

Summary

As printed in 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 B-Spec Correct error for rear brakes of Hyundai/Kia

#36174 from B-Spec/C-Spec Committee · Rule change · TB 24-07 (2024-07 Fastrack)

Summary

As printed in Fastrack

In B-Spec Spec Lines, Hyundai Accent Hatchback (12-19), change brakes as follows:
"(R) 9.9 drum or 10.3 drum disc"
In B-Spec Spec Lines, Kia Rio Hatchback (12-19), change brakes as follows:
"(R) 10.3 drum disc"

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

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

Summary

As printed in 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 B-Spec Update Tire Rules

#35984 from B-Spec/C-Spec Committee · Rule change · TB 24-08 (2024-08 Fastrack)

Summary

As printed in Fastrack

In GCR Section 9.1.10.E.7. change as follows:
"a. For the remainder of 2023, B-Spec entrants will be allowed to compete on both Hankook and Goodyear Tires. For B-
Spec: tires shall be Hankook 205/50R15 C51, Hankook 200/580R15 Z217, P205/50Z R15 Goodyear Eagle RS (Dry tire) Catalog
#D4850 or P205/50ZR15 Goodyear Eagle RS-R (Wet tire) Catalog #D4851. Effective 1-1-2024 Hankook Tires will be allowed at
regional events only, through 6-30-2024. Effective 7-1-2024 Goodyear is the only legal specified tire allowed in B-spec for all
events. Mixing wet and dry tires is not permitted. Tires may not be modified. All B-Spec competitors are required to place two (2)
12-inch or larger “Goodyear” decals on their cars, one on each side of the car above the front tire.
C-Spec: Tires shall be 225/45R17. No Mixing of wet and dry tires on the same car is not permitted. Tires must be run unmodified.

2024-08-01 B-Spec BOP help for the automatic B-Specs

#36161 from B-Spec/C-Spec Committee · Rule change · TB 24-08 (2024-08 Fastrack)

Summary

As printed in Fastrack

In B-Spec Spec Lines, change as follows:
Chevrolet Sonic Sedan AT
Notes: "33 5mm"
Chevrolet Sonic Hatchback AT
Notes: "34 6mm"
Honda Fit AT (07-08)
Weight (lbs): "2400 2350"
Notes: "Any aftermarket header allowed."

2024-08-01 FP Errant entry in HP production line item

#36231 from Angus Crome · Rule change · TB 24-08 (2024-08 Fastrack)

Summary

As printed in Fastrack

In HP Spec Lines, change Track (F/R)mm/(in.) as follows:
Volkswagen Golf (GTI, GT, GL) (85-92): "2 1537/1529 (60.5/60.2)"
Volkswagen Jetta (GLI, GL) (85-92): "2 1537/1529 (60.5/60.2)"

2024-08-01 B-Spec Require hood pins

#36233 from Frank Schwartz · Rule change · TB 24-08 (2024-08 Fastrack)

Summary

As printed in Fastrack

In GCR, Section 9.1.10.E.41., change as follows:
"Optional Hood Pins may be added to supplement the original hood latch system. All parts of the original hood latch system
must remain in the car. Installation of hood pins is recommended but not required. If hood pins are used, the factory release and
cable must be removed, but the secondary latch may be retained. Vehicles equipped with plastic release cables may replace them
with steel units. The OEM hood release latch may be relocated."

2024-08-01 B-Spec Sonic Caliper Pistons

#36238 from Jonathan Wickert · Rule change · TB 24-08 (2024-08 Fastrack)

Summary

As printed in Fastrack

In B-Spec Spec Lines, change Chevrolet Sonic Sedan MT (12-19), add to Notes the following:
"Allow Babyface Fabrication brake caliper piston SNC-SS."
In B-Spec Spec Lines, change Chevrolet Sonic Sedan AT (12-19), add to Notes the following:
"Allow Babyface Fabrication brake caliper piston SNC-SS."
In B-Spec Spec Lines, change Chevrolet Sonic Hatchback MT (12-19), add to Notes the following:
"Allow Babyface Fabrication brake caliper piston SNC-SS."
In B-Spec Spec Lines, change Chevrolet Sonic Hatchback AT (12-19), add to Notes the following:
"Allow Babyface Fabrication brake caliper piston SNC-SS."

2024-10-01 FP Errors/emissions Honda Civic/CRX

#36700 from Martin Burk · Rule change · TB 24-10 (2024-10 Fastrack)

Summary

As printed in Fastrack

In FP Spec Lines, Honda CRX / CRX Si (84-87), change Block Mat'l as follows:
"Iron Alum"

2024-11-01 B-Spec Scion IA/Toyota Yaris/Mazda 2 DY chassis suspension

#35780 from Derrick Ambrose · Rule change · TB 24-09 (2024-09 Fastrack)

Summary

As printed in Fastrack

In B-Spec Spec Lines, Toyota/Scion IA Sedan (16-20), change Notes as follows:
"38mm FPR. (Effective 11/1/2024) Allow ST Suspension Kit 13275022. This configuration is not currently eligible for Runoffs
competition. This car must compete in three (3) separate Super Tour weekends so that performance data can be collected. In
addition to SCCA data box, OBDII data collected via an AIM or similar device must be submitted."

2024-11-01 FP 1275 HP Spridget Level 2 Only

#36518 from Darryl Saylor · Rule change · TB 24-09 (2024-09 Fastrack)

Summary

As printed in Fastrack

In HP Spec Lines, Austin-Healey Sprite MkI, II, III, IV MG Midget (ALL) - Level 2 - 1275cc, change Notes as follows:
"(Effective 11/1/2024) Compression ratio limited to 11 12.0:1"
In HP Spec Lines, Austin-Healey Sprite MkI, II, III, IV MG Midget (ALL) - Level 2 - 1098cc, change Notes as follows:
"(Effective 11/1/2024) Compression ratio limited to 11 12.0:1"

2024-11-01 B-Spec Clean up 07-08 Honda Fit AT Notes Section

#36542 from B-Spec/C-Spec Committee · Rule change · TB 24-09 (2024-09 Fastrack)

Summary

As printed in Fastrack

In B-Spec Spec Lines, Honda Fit AT 07-08, change Notes as follows:
"(Effective 11/1/2024) Allow damper and spring set 51600F23SA100, Damper FR LH 51605F23SA100, Damper FR RH
51606F23SA100, Damper RR 52610F23SA100, Spring adjust asy RR 52691F23SA010. Seat upper FR spring 51688F23SA200,
51402FC4YA00 front helper spring and 51403FC4YA00 front spacer permitted. Front Damper Mount P/N 51920-F23S-A30 is
allowed. Allow rear sway bar Progress # 62.1060. Any Cold Air Intake Package allowed (any manufacturer). This configuration is
not currently eligible for Runoffs competition. This car must compete in three (3) separate Super Tour weekends so that
performance data can be collected. In addition to SCCA data box, OBDII data collected via an AIM or similar device must be
submitted."

2025-01-01 B-Spec Remove wheelbase from spec lines and replace with Restrictor

#36074 from B-Spec/C-Spec Committee · Rule change · TB 24-11 (2024-11 Fastrack)

Summary

As printed in Fastrack

In B-Spec Spec Lines that are not expiring on 1/1/25, replace Wheelbase as follows:
"(Effective 1/1/2025)Wheelbase Restrictor (mm)"
In B-Spec Spec Lines, update the value in the spec lines under the Restrictor column as follows effective 1/1/2025:
Chevrolet Sonic Sedan MT (12-19): "2525 33"
Chevrolet Sonic Sedan AT (12-19): "2525 35"
Chevrolet Sonic Hatchback MT (12-19): "2525 34"
Chevrolet Sonic Hatchback AT (12-19): "2525 36"
Fiat 500 (12-17): "2300"

2025-01-01 GT2 Panoz Esperante GTS BOP

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

Summary

As printed in 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 B-Spec Bilstein Rear Shock Request for Hyundai Accent/Kia Rio

#36965 from Alex Ratcliffe · Rule change · TB 25-01 (2025-01 Fastrack)

Summary

As printed in Fastrack

In B-Spec Spec Lines, Hyundai Accent Hatchback (12-19), add to Notes the following:
"Bilstein B8 shock 33-187112 approved for use in rear suspension."
In B-Spec Spec Lines, Kia Rio Hatchback (12-19), add to Notes the following:
"Bilstein B8 shock 33-187112 approved for use in rear suspension."

2025-01-01 FP Request to Reduce Weight of BMW 325i/is E30 (84-91) Spec Line

#37119 from Tim Schreyer · Rule change · TB 25-01 (2025-01 Fastrack)

Summary

As printed in Fastrack

In EP SPEC LINES, BMW 325i/is (E30) (84-91), change Weight as follows:
"2200 2150
*2255 2204
**2310 2258"

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

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

Summary

As printed in 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 GT2 GT2 Sunbeam Tiger Alternate Carburetor

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

Summary

As printed in 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 FP Fix Error in Spridget Spec Line

#37437 from Jason Stine · Rule change · TB 25-01 (2025-01 Fastrack)

Summary

As printed in Fastrack

In FP SPEC LINES, Austin-Healey Sprite Mk. I, II,III, IV MG Midget Mk I,II, III, IV & 1500, change the following:
1275cc:
Bore x Stroke: "68.1x78.4 (2.68x3.09) 70.6x81.3 (2.78x3.20)"
Displacement: "(77.78) 1275"
Valves IN & EX: "(I) 32.1/(1.26) (E) 28.4/(1.12) (I) 33.3/(1.31) (E) 29.5/(1.16)"
1500cc:
Bore x Stroke: "1.1x84.3 73.7x87.4 (2.90x3.44)"
Displacement: "1491 (90.95) 1493"

2025-01-01 FP Create ruleset that allows GTL cars to run in FP

#37485 from Club Racing Board · Rule change · TB 25-01 (2025-01 Fastrack)

Summary

As printed in Fastrack

“(Effective January 1, 2026) (Effective January 1, 2025)." Any GT-Lite (GTL) car meeting all of the requirements of Appendix N
GT-LITE CATEGORY SPECIFICATIONS for inclusion into F PRODUCTION" may compete in the F-Production class. For GTL cars
competing in FP, the level of preparation and modifications will be determined by Appendix N and not by PCS 9.1.5.”

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

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

Summary

As printed in 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 B-Spec Remove Redundant Language from Notes Sections

#37337 from B-Spec/C-Spec Committee · Rule change · TB 25-02 (2025-02 Fastrack)

Summary

As printed in Fastrack

In B-Spec Spec Lines, Honda Fit AT (07-08), change Notes as follows:
"Allow damper and spring set 51600F23SA100, Damper FR LH 51605F23SA100, Damper FR RH 51606F23SA100, Damper RR
52610F23SA100, Spring adjust asy RR 52691F23SA010. Seat upper FR spring 51688F23SA200, 51402FC4YA00 front helper spring
and 51403FC4YA00 front spacer permitted. Front Damper Mount P/N 51920-F23S-A30 is allowed. Allow rear sway bar Progress
# 62.1060. Any Cold Air Intake Package allowed (any manufacturer). This configuration is not currently eligible for Runoffs
competition. This car must compete in three (3) separate Super Tour weekends so that performance data can be collected. In
addition to SCCA data box, OBDII data collected via an AIM or similar device must be submitted. Any aftermarket header
allowed. Allow rear sway bar Progress # 62.1060. Any Cold Air Intake Package allowed (any manufacturer). This configuration is

Applies to Mini Cooper on this page: Trenton Kramer, Thomas Lepper

Applies to Toyota Yaris on this page: Joseph Gersch

2025-02-01 B-Spec Expire designated spec lines

#37517 from B-Spec/C-Spec Committee · Rule change · TB 25-02 (2025-02 Fastrack)

Summary

As printed in Fastrack

In B-Spec Spec Lines, delete the following spec lines effective 2/1/25 in their entirety:
"Mini Cooper Countryman (R60) (11-16)"
"Cooper Paceman (R61) (11-16)"
"Nissan Versa (07-11)"
"Nissan Versa (09-11)"

2025-02-01 B-Spec Set expiration date for Nissan Micra Cup Cars (Canadian)

#37519 from B-Spec/C-Spec Committee · Rule change · TB 25-02 (2025-02 Fastrack)

Summary

As printed in Fastrack

In B-Spec Spec Lines, Nissan Micra Cup Car, add to Notes the following:
"This spec line will expire on 7/1/25 unless an appeal is submitted by 6/30/25."

2025-02-21 FP Effective date for Jan 2025 GCR updates

#37654 from Doug Piner · Rule change · TB 25-02 (2025-02 Fastrack)

Summary

As printed in Fastrack

In EP Spec Lines, add to Notes as follows:
BMW Z3 2.5LL "(Effective 2/21/2025) 52mm Flat Plate Intake Restrictor is required."
BMW Z3 2.8L (97-00): "(Effective 2/21/2025) 55mm Flat Plate Intake Restrictor is required."
BMW 328i/is E36 (96-99): "(Effective 2/21/2025) 58mm Flat Plate Intake Restrictor is required."
BMW 328i/ci E46 (01-06): "(Effective 2/21/2025) 58mm Flat Plate Intake Restrictor is required."
BMW 325i/is E46 (01-06): "(Effective 2/21/2025) 56mm Flat Plate Intake Restrictor is required."
BMW 325i/is E-36 (92-95): "(Effective 2/21/2025) 56mm Flat Plate Intake Restrictor is required."
BMW 325is M-Technic (1994): "(Effective 2/21/2025) 56mm Flat Plate Intake Restrictor is required."

2025-03-01 GT2 Hood Bulge allowed

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

Summary

As printed in 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 FP Request Competition Adjustment to BMW Z3 2.5L

#37120 from Tim Schreyer · Rule change · TB 25-01 (2025-01 Fastrack)

Summary

As printed in Fastrack

In EP Spec Lines, change Notes as follows:
BMW Z3 2.5LL "(Effective 3/1/2025) 56mm 52mm Flat Plate Intake Restrictor is required."
BMW Z3 2.8L (97-00): "(Effective 3/1/2025) 59mm 55mm Flat Plate Intake Restrictor is required."
BMW 328i/is E36 (96-99): "(Effective 3/1/2025) 62mm 58mm Flat Plate Intake Restrictor is required."
BMW 328i/ci E46 (01-06): "(Effective 3/1/2025) 62mm 58mm Flat Plate Intake Restrictor is required."
BMW 325i/is E46 (01-06): "(Effective 3/1/2025) 60mm 56mm Flat Plate Intake Restrictor is required."
BMW 325i/is E-36 (92-95): "(Effective 3/1/2025) 60mm 56mm Flat Plate Intake Restrictor is required."
BMW 325is M-Technic (1994): "(Effective 3/1/2025) 60mm 56mm Flat Plate Intake Restrictor is required."

2025-03-01 FP Interpretation of Production Rules on Mirrors

#37235 from Lawrence Slivinski · Rule change · TB 25-03 (2025-03 Fastrack)

Summary

As printed in Fastrack

In GCR, add new rule as Section 9.1.5.E.10.f:
"Any interior or exterior mirror(s) that meets rule 9.3.36 may be used."

2025-03-01 FP FP Class Adjustments

#37458 from Production Committee · Rule change · TB 25-01 (2025-01 Fastrack)

Summary

As printed in Fastrack

In FP SPEC LINES, change Notes as follows:
Acura Integra (90-93): "(Effective 3/1/2025) 55mm 51mm Flat Plate Intake Restrictor is required."
Acura Integra LS (94-01): "(Effective 3/1/2025) 55mm 51mm Flat Plate Intake Restrictor is required."
Acura Integra GSR (92-93): "(Effective 3/1/2025) 55mm 51mm Flat Plate Intake Restrictor is required."
Honda Civic Si (99-00): "(Effective 3/1/2025) 55mm 51mm Flat Plate Intake Restrictor is required.
In FP SPEC LINES, change as follows:
Honda Civic Del Sol VTEC (94-97): "
Weight: "(Effective 3/1/2025) 2265 *2322 **2378 2290 *2347 **2405

2025-03-01 FP Weight Reduction for Honda S2000

#37466 from Michael Unger · Rule change · TB 25-03 (2025-03 Fastrack)

Summary

As printed in Fastrack

In EP, Spec Lines make the following weight changes:

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

2025-03-01 FP Mazda 1999 Miata 1.8L

#37488 from Joe Carr · Rule change · TB 25-03 (2025-03 Fastrack)

Summary

As printed in Fastrack

In EP Spec Lines, make the following weight change:
Mazda MX-5 /Miata (99-05):
"2150 2100
*2204 2153
**2258 2205"

2025-03-01 B-Spec Toyota Yaris Hatchback (12-18) rear disc brakes

#37530 from B-Spec/C-Spec Committee · Rule change · TB 25-03 (2025-03 Fastrack)

Summary

As printed in Fastrack

In B-Spec Spec Lines, Toyota Yaris Hatchback (12-18), please add to Brakes (inches) as follows:
"(F) 10.0 (R) 7.9 drum or 10.2 disc"

2025-03-01 B-Spec Yaris Speed Sensor

#37536 from B-Spec/C-Spec Committee · Rule change · TB 25-03 (2025-03 Fastrack)

Summary

As printed in Fastrack

In B-Spec Spec Lines, Toyota Yaris Hatchback (12-18) AND Toyota Yaris Sedan (07-12), add to Notes the following:
"Speed sensor may be disconnected."

2025-03-01 GT2 OEM Wing Adjustment

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

Summary

As printed in 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 FP Errors & Omissions

#37648 from Bryan Floyd · Rule change · TB 25-03 (2025-03 Fastrack)

Summary

As printed in Fastrack

In FP Spec Lines, Appendix N, GTL-FP Cars - Volkswagen, classify Jetta Mark - IV as follows:
GTL-FP Cars - VOLKSWAGEN
Model Years Body Style Drive-line Wheelbase (in) Notes
Jetta Mark - IV 4dr FWD 98.2

2025-03-01 FP GTL/FP consolidation 2025 Rules

#37659 from James Gregorius · Rule change · TB 25-03 (2025-03 Fastrack)

Summary

As printed in Fastrack

In FP Spec Lines, Appendix N: L.9, Fuel Injection System, add the following:
"As an option, induction system “Chokes” may be used where a SIR is required. Said chokes shall be fitted to each barrel of
carburetor/throttle body and all airflow into engine must pass through them. Choke size will be the same as listed SIR unless
noted."

2025-03-01 B-Spec Set Expiration Date For Fiat 500

#37689 from B-Spec/C-Spec Committee · Rule change · TB 25-03 (2025-03 Fastrack)

Summary

As printed in Fastrack

In B-Spec Spec Lines, Fiat 500 (12-17), please add to Notes the following language:
"This spec line will expire on 1/1/26 unless an appeal is filed."

2025-04-01 B-Spec 2025 BOP Recommendations

#37520 from B-Spec/C-Spec Committee · Rule change · TB 25-04 (2025-04 Fastrack)

Summary

As printed in Fastrack

In B-SPEC Spec Lines, change as follows:
Honda Fit MT (09-14): "Any Cold Air Intake Package allowed (any manufacturer) Allow Injen Intake SP1512, K&N Intake 69-
1017TTK, or HPS intake 827-102 with a 25lb adder."
Mazda2 (10-14): "Exhaust Header (cat delete) HB.EM 60-404-S-SS, HP-MZD001 allowed with a 50lb adder, or Mazda
Motorsports PN 0000- 06-2410 permitted with no weight adder."
Mini Cooper (R56) MT (07-10): "44 5 FPR (OE Catalyst)"
Mini Cooper (R56) AT (07-10): "46 7 FPR (OE Catalyst)"
Mini Cooper Clubman (R55) (07-10): "44 5 FPR (OE Catalyst)"

2025-04-01 B-Spec Hyundai/Toyota Factory Rear Disc Models

#37534 from B-Spec/C-Spec Committee · Rule change · TB 25-04 (2025-04 Fastrack)

Summary

As printed in Fastrack

In B-SPEC Spec Lines, add to Notes the following:
Hyundai Accent Hatchback (12-19): "Vehicles equipped with rear drum brakes subtract 25 lb."
Toyota Yaris Hatchback (12-18): "Vehicles equipped with rear disc brakes add 25 lb."

2025-04-01 FP Request for Classification of Chevrolet Spark

#37755 from Kristian Smith · Rule change · TB 25-04 (2025-04 Fastrack)

Summary

As printed in Fastrack

In HP Spec Lines, classify the Chevrolet Spark (16-22):

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

2025-04-01 B-Spec Request to Update the Spec line for Hyundai Accent and Kia Rio

#37880 from Alex Ratcliffe · Rule change · TB 25-04 (2025-04 Fastrack)

Summary

As printed in Fastrack

In B-SPEC Spec Lines, add to Notes as follows:
Hyundai Accent Hatchback (12-19): "Bilstein B14 kit #4716 → 7490 front shocks verified compatible. Allow BabyFace Fabrication
sump extension #BF-HYU-PAN."
Kia Rio Hatchback (12-19): "Bilstein B14 kit #4716 → 7490 front shocks verified compatible. Allow BabyFace Fabrication sump
extension #BF-HYU-PAN."

2025-04-01 FP Request to Lower Ford Festiva Minimum Weight to 1600 LBS

#37939 from Doug DeRonne · Rule change · TB 25-04 (2025-04 Fastrack)

Summary

As printed in Fastrack

In HP Spec Lines "Ford Festiva (88-93)" change as follows:
Weight:
"1700 1600
*1743 1640
**1785 1680"
Notes:
"Compression ratio limited to 10.5 11.0:1. Valve lift limited to .450”."

2025-05-01 B-Spec Correct Hyundai/Kia Model Years

#37943 from B-Spec/C-Spec Committee · Rule change · TB 25-05 (2025-05 Fastrack)

Summary

As printed in Fastrack

In B-Spec Spec Lines, correct model years as follows:
"Hyundai Accent Hatchback (12-19 7)"
"Kia Rio Hatchback (12-19 5)"

2025-05-01 B-Spec 07-08 Honda Fit MT Requests

#37974 from Caleb Patrie · Rule change · TB 25-05 (2025-05 Fastrack)

Summary

As printed in Fastrack

In B-SPEC Spec Lines, Honda Fit MT (07-08), change as follows:
Minimum weight: "2400 2450"
Notes: "OEM exhaust manifold required. Primary catalyst may be removed."

2025-05-01 B-Spec Add B14 Kit Part # to Honda Fit (07-08) Spec line

#38010 from B-Spec/C-Spec Committee · Rule change · TB 25-05 (2025-05 Fastrack)

Summary

As printed in Fastrack

In B-SPEC Spec Lines, Honda Fit (07-08) MT, add to Notes the following:
"Bilstein B14 kit 4717 → 2401 verified compatible."
In B-SPEC Spec Lines, Honda Fit (07-08) AT, add to Notes the following:
"Bilstein B14 kit 4717 → 2401 verified compatible."

2025-06-01 B-Spec Add Sedan spec lines for Hyundai & Kia

#37537 from B-Spec/C-Spec Committee · Rule change · TB 25-06 (2025-06 Fastrack)

Summary

As printed in Fastrack

In B-SPEC Spec Lines, classify Hyundai Accent Sedan (12-17) as follows:
B-SPEC Bore x
Stroke(mm)
Displacement
(cc)
Gear Ratios Final

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

2025-06-01 B-Spec Shifter Bushing Questions.

#38048 from Eric Yagel · Rule change · TB 25-06 (2025-06 Fastrack)

Summary

As printed in Fastrack

In B-SPEC Spec Lines, Honda Fit MT (09-14) add to Notes the following:
"Allow Acuity Shifter Base Bushing Kit 1954."

2025-06-01 FP Base Weight Adjustment for H-Production X1/9 Spec Lines

#38255 from Matthew Brannon · Rule change · TB 25-06 (2025-06 Fastrack)

Summary

As printed in Fastrack

In HP Spec Lines, change Weight as follows:
Fiat X-1/9 & Bertone1500: “1790 1740 *1835 1784 **1880 1827”
Fiat X-1/9 1300: “1650 1600 *1691 1640 **1733 1680”
Fiat X-1/9 1300: “2060 2010”
Fiat X-1/9 1500: “1950 1900”

2025-06-01 B-Spec Add Weapon R Intake to Honda Fit MT (09-14) Spec Line

#38306 from B-Spec/C-Spec Committee · Rule change · TB 25-06 (2025-06 Fastrack)

Summary

As printed in Fastrack

In B-SPEC Spec Lines, Honda Fit AT (09-14), add to Notes the following:
"Weapon R Intake 301-166-301"

2025-06-01 B-Spec Update Rule 46

#38307 from B-Spec/C-Spec Committee · Rule change · TB 25-06 (2025-06 Fastrack)

Summary

As printed in Fastrack

In GCR, Section 9.1.10.E.46. change as follows:
"Aftermarket shift knobs are allowed and shift levers mat y be bent or extended, however the shift linkage/cables must remain
stock and may not be modified in any way. Approved aftermarket shift linkage bushings are permitted."

2025-07-01 FP BMW Z4 update

#38490 from Bryce McGuire · Rule change · TB 25-07 (2025-07 Fastrack)

Summary

As printed in Fastrack

In EP Spec Lines, BMW Z4 (03-05), add to Notes the following:
“52mm Flat Plate Intake Restrictor.”

2025-07-01 FP EP Fiat 124 Spider Competition Adjustment Request

#38498 from John Baucom · Rule change · TB 25-07 (2025-07 Fastrack)

Summary

As printed in Fastrack

In EP Spec Lines, Fiat 124 Sport Spider 1600 & 124 Spider 2000, change as follows:
Weight: "2050 2000"
Carburetor No. & Type: "(2) Weber 40 IDF-40IFI, (2) Solex C40P116, 34 36mm choke(s) req’d, (2) Weber 45DCOE w/ 34 36 mm
choke(s) on I.R. manifold or fuel injection."

2025-08-01 B-Spec Disabling 2 Pedal Shutdown

#38354 from Eric Yagel · Rule change · TB 25-08 (2025-08 Fastrack)

Summary

As printed in Fastrack

In B-Spec Spec Lines, Honda Fit MT (09-14), add to Notes the following:
"Two pedal shutdown may be disabled by cutting/de-pinning pin 42 (BKSW) at the main ECU connector in the engine bay."

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

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

Summary

As printed in 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 B-Spec Update Honda Fit MT (07-08) Intake Allowance

#38530 from B-Spec/C-Spec Committee · Rule change · TB 25-08 (2025-08 Fastrack)

Summary

As printed in Fastrack

In B-Spec Spec Lines, Honda Fit MT (07-08), change Notes as follows:
"Bilstein B14 kit 47172401 verified compatible. Allow rear sway bar Progress #62.1060. Any Cold Air Intake Package allowed (any
manufacturer). Allow Injen Intake SP1511. This configuration is not currently eligible for Runoffs competition. This car must
compete in three (3) separate Super Tour weekends so that performance data can be collected. In addition to SCCA data box,
OBDII data collected via an AIM or similar device must be submitted. OEM exhaust manifold required. Primary catalyst may be
removed."

2025-09-01 B-Spec Remove Asterisk from Rule 9

#38768 from B-Spec/C-Spec Committee · Rule change · TB 25-09 (2025-09 Fastrack)

Summary

As printed in Fastrack

In GCR, Section 9.1.10.D.9, change as follows:
"* If car is used on public roads, these items should be replaced, reactivated, rearmed, etc. when not in competition."

2025-10-01 FP HP Plymouth Arrow spec omission

#38995 from Production Committee · Rule change · TB 25-10 (2025-10 Fastrack)

Summary

As printed in Fastrack

In HP Spec Lines, Plymouth Arrow (76-80), add the following wording to Trans. Speeds(max):
"4 or 5"

2025-10-01 FP Add Wheel Diameter to Appendix G

#39008 from Production Committee · Rule change · TB 25-10 (2025-10 Fastrack)

Summary

As printed in Fastrack

In Appendix G.2.3, change as follows:
"Rim width and diameter are is absolute maximums."

2025-10-01 FP Add TB ID tolerance to general Prod rules

#39009 from Production Committee · Rule change · TB 25-10 (2025-10 Fastrack)

Summary

As printed in Fastrack

In GCR, Section 9.1.5.E., change as follows:
9.1.5.E.1.b.4: "The inside dimensions of the throttle body casting/housing (as measured at the throttle butterfly) must remain
stock (tolerance of +/-.25mm), but the throttle body can otherwise be ported and polished."
9.1.5.E.2.b.4: "The inside dimensions of the throttle body casting/housing and all dimensions of the throttle butterfly must
remain stock (tolerance of +/-.25mm)."

2025-11-01 B-Spec Alternate Shift Cable Bushings and Rear Spring Seats

#38472 from Caleb Patrie · Rule change · TB 25-09 (2025-09 Fastrack)

Summary

As printed in Fastrack

In B-Spec Spec Lines, Honda Fit MT (07-08), add to Notes the following:
"(Effective 11/1/2025) Allow Torque Solution Shifter Cable Bushing kit TS-SCB-506."

2025-11-01 B-Spec Fiesta BOP Adjustment

#38847 from B-Spec/C-Spec Committee · Rule change · TB 25-09 (2025-09 Fastrack)

Summary

As printed in Fastrack

In B-Spec Spec Lines, Ford Fiesta Hatchback (11-19), change as follows:
Weight (lbs): "(Effective 11/1/2025) 2470 2525"
Restrictor (mm) & Type: "(Effective 11/1/2025)39 FPR 40 FPR"
In B-Spec Spec Lines, Ford Fiesta Sedan (11-19), change as follows:
Weight (lbs): "(Effective 11/1/2025) 2470 2525"
Restrictor (mm) & Type: "(Effective 11/1/2025)38 FPR 39 FPR"

2025-11-01 FP Please Lower Weight of 280Z

#38871 from Matthew Miller · Rule change · TB 25-09 (2025-09 Fastrack)

Summary

As printed in Fastrack

In EP Spec Lines, Nissan 280Z, change Weight (lbs) as follows:
"(Effective 11/1/2025) 2560 2400
*2624 2460
**2688 2520"

2025-11-01 FP Miata Weight Adjustment Follow Up

#38949 from Don Tucker · Rule change · TB 25-10 (2025-10 Fastrack)

Summary

As printed in Fastrack

In EP Spec Lines, Mazda MX-5 / Miata 1.8L (90-97), Effective 11/1/2025 make the following weight change:
"2150 2125"

2025-11-01 FP Weight Break for 1098 Midget / Sprite

#38970 from Kendall Jones · Rule change · TB 25-10 (2025-10 Fastrack)

Summary

As printed in Fastrack

In HP Spec Lines, Austin-Healey Sprite/Midget 1098cc, Effective 11/1/2025make the following weight change:
"1630 1550"

2025-11-01 FP HP Volvo 142 spec omission

#38994 from Production Committee · Rule change · TB 25-10 (2025-10 Fastrack)

Summary

As printed in Fastrack

In HP Spec Lines, Volvo 142/142E P-1800 Engine, Effective 11/1/2025 add the following wording to Notes:
"Comp. Ratio limited to 12.0:1. Valve lift limited to .425”."

2025-11-01 FP HP Mini DOHC 1.6

#38996 from Production Committee · Rule change · TB 25-10 (2025-10 Fastrack)

Summary

As printed in Fastrack

In HP Spec Lines, Mini Cooper (07-13) (includes 09-15 convertible and 12-15 Coupe), Effective 11/1/2025 make the following
changes to the Notes:
"Compression ratio limited to 11.0:1, Valve lift limited to .450”.390"."

2025-11-01 FP 83-88 FP Scirocco Spec Line Creation

#38997 from Production Committee · Rule change · TB 25-11 (2025-11 Fastrack)

Summary

As printed in Fastrack

In FP Spec Lines, classify Volkswagen Scirocco (83-88) as follows:

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

2025-11-01 B-Spec Request to Remove Rear Shock From Spec Line Hyundai Accents/Kia

#39017 from Alex Ratcliffe · Rule change · TB 25-11 (2025-11 Fastrack)

Summary

As printed in Fastrack

In B-Spec Spec Lines, Hyundai Accent Sedan (12-17), change Notes as follows:
"Bilstein B8 shock 33- 187112 approved for use in rear suspension."
In B-Spec Spec Lines, Kia Rio Sedan (12-17), change Notes as follows:
"Bilstein B8 shock 33- 187112 approved for use in rear suspension."

2025-11-01 FP Add to Rabbit description

#39019 from Production Committee · Rule change · TB 25-11 (2025-11 Fastrack)

Summary

As printed in Fastrack

In FP Spec Lines, make the following spec line correction:
"Volkswagen Rabbit (Includes Convertible Cabriolet)"
In HP Spec Lines, make the following spec line correction:
"Volkswagen Rabbit 1588 (Includes Cabriolet)"
"Volkswagen Rabbit 1715 (Includes Cabriolet)"
"Volkswagen Rabbit 1780 (Includes Cabriolet)"

2025-11-01 FP Clean-up 9.1.5.E.7e

#39025 from Production Committee · Rule change · TB 25-11 (2025-11 Fastrack)

Summary

As printed in Fastrack

In GCR, Section 9.1.5.E.7., change as follows:
"e. Cars fitted with rear drum brakes, can convert to rear disc brakes without penalty. Note that the “Brakes Std.” and “Brakes
Alt.” listings on a vehicle’s spec line do not prohibit a car that was fitted with rear drum brakes stock, from converting to rear
disc brakes under this rule. When converting from rear drum brakes to rear disc brakes:
1. Rear brake rotors must be solid and can be no larger in diameter than the largest permitted front brake rotor, as defined on
the vehicle’s spec line.
2. Rear calipers and mounting brackets are unrestricted but must be made of a ferrous or aluminum material. The standard and
alternate brake listings on a vehicle’s specification line, does not prohibit a car that was fitted with rear drum brakes as stock

2025-11-01 B-Spec Update Honda Fit MT (07-08) Runoffs Eligibility

#39060 from B-Spec/C-Spec Committee · Rule change · TB 25-11 (2025-11 Fastrack)

Summary

As printed in Fastrack

In B-Spec Spec Lines, Honda Fit MT (07-08), change Notes as follows:
"Bilstein B14 kit 47172401 verified compatible. Allow rear sway bar Progress #62.1060. Allow Injen Intake SP1511 OEM exhaust
manifold required. Primary catalyst may be removed. This configuration is not currently eligible for Runoffs competition. This car
must compete in three (3) separate Super Tour weekends so that performance data can be collected. In addition to SCCA data
box, OBDII data collected via an AIM or similar device must be submitted. (Effective 11/1/2025) Allow Torque Solution Shifter
Cable Bushing kit TS-SCB-506."

2025-11-01 FP Add TB size to Ford Mustang (94-98) Spec Line

#39130 from Production Committee · Rule change · TB 25-11 (2025-11 Fastrack)

Summary

As printed in Fastrack

In EP Spec Lines, Ford Mustang (94-98) add the following to the Fuel Injected Equipped Throttle Body Inside Diameter column:
"60"

2025-11-01 FP Correct Existing VW Scirocco Spec Line

#39140 from Production Committee · Rule change · TB 25-11 (2025-11 Fastrack)

Summary

As printed in Fastrack

In FP Spec Lines, Volkswagen Scirocco, change spec line as follows:

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

2025-12-01 FP TR2 Notes E&O

#39180 from Anthony Parker · Rule change · TB 25-12 (2025-12 Fastrack)

Summary

As printed in Fastrack

In EP Spec Lines, Triumph TR2, 3, 3A, 4, 4A, TR4, TR4A, IRS, make the following change to the Notes:
"Front apron assembly may be made of alternate material. Three (3) Weber 40 DCOE on IR manifold with 28mm chokes @ 1990
lbs. Laycock overdrive, may use 5 speed gearbox without overdrive."

2025-12-01 FP Balance of Power

#39187 from Jim Simaras · Rule change · TB 25-12 (2025-12 Fastrack)

Summary

As printed in Fastrack

In EP Spec Lines, make the following changes to Restrictors:
BMW Z3 2.5L: "52mm 50mm Flat Plate Intake Restrictor"
BMW Z3 2.8L (97-00): "55mm 53mm Flat Plate Intake Restrictor"
BMW 328i/is E36 (96-99): "58mm 55mm Flat Plate Intake Restrictor"
BMW 328i/ci E46 (01-06): "58mm 55mm Flat Plate Intake Restrictor"
BMW 325i/is (E46) (01-06): "56mm 53mm Flat Plate Intake Restrictor"
BMW 325is M-Technic (1994): "56mm 53mm Flat Plate Intake Restrictor"
BMW 325i/is E-36 (92-95): "56mm 53mm Flat Plate Intake Restrictor"

2025-12-01 FP Competition Adjustment Request

#39259 from David Strittmatter · Rule change · TB 25-12 (2025-12 Fastrack)

Summary

As printed in Fastrack

In FP Spec Lines, Lancia Scorpion, change Weight as follows:
"2030 1950"

2025-12-01 FP Factory Roll Bar Removal on VW Convertible

#39268 from Tim Linerud · Rule change · TB 25-12 (2025-12 Fastrack)

Summary

As printed in Fastrack

In FP Spec Line, Volkswagen Rabbit (Includes Convertible), remove the following wording in Notes:
"Factory roll bar must be removed on Cabriolet."

2025-12-01 FP FP Parity Request

#39325 from Mason Workman · Rule change · TB 25-12 (2025-12 Fastrack)

Summary

As printed in Fastrack

In FP, change Weight as follows:
Acura Integra (90-93):
"2235 2285
*2291 2342
**2347 2399"
Acura Integra LS (94-01):
"2260 2310
*2317 2368

2025-12-01 FP Adjust former-GTL Honda's with B/D-Series Engines

#39374 from Production Committee · Rule change · TB 25-12 (2025-12 Fastrack)

Summary

As printed in Fastrack

In GCR, Appendix N GTL inclusion into FP, Engines - HONDA, change Disp. (cc) – Weight (lbs) as follows:
"D15 – 1493cc – 1895 2000
D15b7 – 1493cc – 1895 2000
D16 – 1590cc – 1945 2055
D16A – 1590cc – 1945 2055
B16A – 1595cc – 1950 2065
B18 – 1797cc – 2050 2170
B18 – 1834cc – 2065 2185"

2026-01-01 B-Spec Notes section cleanup

#39062 from B-Spec/C-Spec Committee · Rule change · TB 26-01 (2026-01 Fastrack)

Summary

As printed in Fastrack

In B-Spec Spec Lines, Chevrolet Sonic Sedan MT (12-19), change Notes as follows:
"GM suspension kit #23123679 permitted. Bilstein B14 kit #47-171725 verifed compatible. Allow rear sway bar ZZ Performance
#ZZ-SNCRSB. Allow Aluminum Radiator #ZZP-ZZ013. Allow Babyface Fabrication brake caliper piston SNC-SS. Approved parts: ZZ
Performance rear sway bar ZZ-SNCRSB, ZZ Performance radiator ZZP-ZZ013, Babyface Fabrication brake caliper piston SNC-SS.
Bilstein B14 kit 47-171725 verified compatible."
In B-Spec Spec Lines, Chevrolet Sonic Sedan AT (12-19), change Notes as follows:
"GM suspension kit #23123679 permitted. Bilstein B14 kit #47-171725 verifed compatible. Allow rear sway bar ZZ Performance
#ZZ-SNCRSB. For automatic allow Setrab 1-series Part No. FP119M221. Allow Aluminum Radiator #ZZP-ZZ013. Allow Babyface

Applies to Mini Cooper on this page: Trenton Kramer, Thomas Lepper

Applies to Toyota Yaris on this page: Joseph Gersch

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)

Summary

As printed in 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 GT2 GT3 Turbo to GT2?

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

Summary

As printed in 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 B-Spec 2026 BOP Recommendations

#39475 from B-Spec/C-Spec Committee · Rule change · TB 26-01 (2026-01 Fastrack)

Summary

As printed in Fastrack

In B-Spec Spec Lines, change as follows:
Chevrolet Sonic Sedan AT (12-19):
Restrictor (mm) & Type: "35 FPR"
Chevrolet Sonic Hatchback AT (12-19):
Restrictor (mm) & Type: "35 FPR"
Honda Fit MT (09-14):
Weight (lbs): "2525 2550"
Honda Fit CVT (15-19):

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

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

Summary

As printed in 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

2026-01-01 B-Spec Expire NLA Mazda 2 Headers

#39582 from B-Spec/C-Spec Committee · Rule change · TB 26-01 (2026-01 Fastrack)

Summary

As printed in Fastrack

In B-Spec Spec Lines, Mazda2 (10-14), change Notes as follows:
"Exhaust Header (cat delete) HB.EM 60-404-S-SS, HP-MZD001, allowed with a 50lb adder or Mazda Motorsports PN 0000-06-
2410 with no weight adder permitted.”

2026-02-01 FP Request Toyota 5E Series Engines

#38208 from Scott Schick · Rule change · TB 26-02 (2026-02 Fastrack)

Summary

As printed in Fastrack

In FP Appendix N, add spec line for the Toyota 5E engine to the "Engines - TOYOTA" section:

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

2026-02-01 FP Request for Toyota 4E Series Engines

#38209 from Scott Schick · Rule change · TB 26-02 (2026-02 Fastrack)

Summary

As printed in Fastrack

In FP Appendix N, add spec line for the Toyota 4E engine to the "Engines - TOYOTA" section:

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)

Summary

As printed in 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 GT2 Classify T1 BMW in GT2

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

Summary

As printed in 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 FP Dual Carbs for the Fiat X1/9

#39593 from Daniel Snow · Rule change · TB 26-02 (2026-02 Fastrack)

Summary

As printed in Fastrack

In FP Spec Lines, change as follows:
Fiat X-1/9 & Bertone 1300:
"(1) Weber 32 DMTR or DATRA/100 w/32mm bores
(1) 40 DCNF w/32mm choke(s)
(2) auto-type side-draft w/28mm choke(s) on I.R. manifold
Orientation of the alternate carburetor is unrestricted. The alternate carb adapter may not be thicker than 1.25”. The adapter
may have a bore larger than the throttle bore of the approved alternate carburetor.
Valve Size: (I) 35.5/(1.40) (E) 31.3/(1.23)30.5/(1.20) (E) 1.23

2026-02-01 B-Spec C-Spec Rear Sway Bars

#39652 from B-Spec/C-Spec Committee · Rule change · TB 26-02 (2026-02 Fastrack)

Summary

As printed in Fastrack

In C-Spec Spec Lines, change Notes as follows:
Chevrolet Cruze (2010-16):
"Allow BC Racing Q-06-BR suspension kit or RedShift Q-06-CSPEC. Allow Babyface Fabrication brake caliper piston SNC-
SS. Approved parts: BC Racing Q-06-BR or RedShift Q-06-CSPEC suspension kit, Babyface Fabrication brake caliper piston SNC-
SS, ZZ Performance ZZ-SNCRSB or Whiteline BHR93 rear sway bar.
Dodge Dart (2014-16):
"Allow BC Racing or RedShift Z-06-CSPEC kit. Approved parts: BC Racing Z-06-BR or RedShift Z-06-CSPEC kit, Progress rear sway
bar 62.0606."