This track has been raced on 4 configurations (The Circuit, 2.57 mi; 2.92 mi; 1.83 mi; 3.02 mi). Laps on different configurations are not comparable, so only events on the 2.57 mile layout are shown; switch above to see the others.
One run is left out as not that car's own laps (far quicker than the car managed in any other session and than anyone else in its class all week; usually a swapped transponder): Tom Burt in Cal Club 2025 PM (1:42.300; the car's best in any other session was 1:52.334 and the rest of the class's best all week 1:50.233).
5 laps are left out as timing errors (far too short to be a lap of this track). The rest of those sessions, sectors included, is used.
One row per driver and car (a driver who changed cars has a row for each). Each cell is that driver's best in that car across the selected events, with the session it was set in. Best 5-lap stint is the mean of the driver's quickest five consecutive race laps, and consistency is how far their median race lap sat behind their best in that race (small is a driver who does it every lap); both come from the race with the best stint. The fastest in each column is purple, and a car whose best lap is more than 115% of the fastest in its class is greyed (marked ">115%" beside the driver) and left out of the colour scale. Click a column to sort, a row to highlight it.
Theoretical lap is the sum of the best sectors, whichever laps they came from, and never slower than the best lap (where a car's fastest laps were recorded without sector times, its best lap is used). The 115% mark is about the car's best lap only: a car whose best lap is within 115% of the fastest in its class is never marked. Greyed sectors with no theoretical lap mean the sector times on file do not add up to a believable lap. Letters refer to the events above; Q is qualifying, R a race.
Sectors
S1 SF → IM1 0.65 mi
S2 IM1 → IM2 0.75 mi
S3 IM2 → SF 1.17 mi
Spd In → Out 0.03 mi
Sectors are numbered in lap order from start/finish, whatever each event's timing called them; the loop names are SCCA timing's.
By car
Car
Class
Drivers
Lap
Qual
Race
Trap
S1
S2
S3
Pro Formula Mazda
FA
1
1:14.588Greg Labadie
1:14.588Greg Labadie
Swift 016
FA
1
1:35.792Greg Labadie
1:35.792Greg Labadie
1:37.275Greg Labadie
163.8Greg Labadie
26.713Greg Labadie
26.816Greg Labadie
41.822Greg Labadie
SCCA Ent SRF3
SRF3
38
1:50.233Caleb Shrader
1:50.233Caleb Shrader
1:50.825Caleb Shrader
138.9Paul Marino
30.136Caleb Shrader
31.672Caleb Shrader
44.841Tom Burt
Honda Civic TCR
T2
1
1:51.198Rylan Hazelton
1:51.198Rylan Hazelton
1:51.454Rylan Hazelton
140.1Rylan Hazelton
30.640Rylan Hazelton
31.962Rylan Hazelton
48.161Rylan Hazelton
Chevrolet
T2
1
1:52.045Oli Thordarson
1:54.065Oli Thordarson
1:52.758Oli Thordarson
114.9Oli Thordarson
30.654Oli Thordarson
32.604Oli Thordarson
48.656Oli Thordarson
Chevrolet Corvette
T2
7
1:52.276Josh Carroll
1:52.276Josh Carroll
1:52.993Josh Carroll
146.6Patrick Howe
30.813Josh Carroll
32.300Josh Carroll
48.783Josh Carroll
Chevrolet Corvette
T2
4
1:52.276Josh Carroll
1:52.276Josh Carroll
1:52.993Josh Carroll
146.6Patrick Howe
30.813Josh Carroll
32.300Josh Carroll
48.783Josh Carroll
Chevrolet Corvette Z06
T2
2
1:53.653Greg Nester
1:53.653Greg Nester
1:54.838Greg Nester
138.0Michael Cheney
31.106Greg Nester
32.902Greg Nester
49.559Greg Nester
Chevrolet C5 Z06
T2
1
1:55.450Luis Martinez
1:55.662Luis Martinez
1:55.450Luis Martinez
129.8Luis Martinez
31.045Luis Martinez
33.509Luis Martinez
49.994Luis Martinez
Chevrolet Chevrolet
T2
1
1:53.309Oli Thordarson
1:53.309Oli Thordarson
1:54.433Oli Thordarson
142.9Oli Thordarson
31.173Oli Thordarson
32.798Oli Thordarson
49.080Oli Thordarson
Ford Mustang
T2
1
1:55.309Scotty B White
1:55.309Scotty B White
1:56.025Scotty B White
133.2Scotty B White
31.540Scotty B White
33.554Scotty B White
50.139Scotty B White
The best any driver of each car managed across the selected events, with who set it. Spellings and model years of the same car are grouped; click a row marked ▸ to see each version. Grouping is worked out from the names, so tell us if two cars are wrongly merged or split.
Rule changes between these events
Cal Club 2023 → Cal Club 2024 2023-02-24 to 2024-02-23
SRF3 Update SRF Brake Rule
#33469 from Robey Clark · Rule change · TB 23-01 (2023-01 Fastrack)
slowerSRF Renault Alliance solid front rotors banned; restrictor reduced 35mm to 34mm for 2011+ Kawasaki; minimum weight increased to 1100 lbs for 2009+ stock engines.
In SRF, GCR section 9.1.8.D.X.g, change as follows: "Brakes: Hawk Blue 9012 pads P/N 801993 must be used. Wilwood vented rotor P/N 800065 shall be used as delivered with no machining of any kind. Minimum thickness 12.20mm (0.481"). The 1985 Renault Alliance solid front rotor (Reference: Bendix PRT1318 or Centrix 121.11004) may be used on front, rear, or both axles, but each axle must be paired to the same type rotor. The Renault Alliance solid front rotors may not be used. Rubber caliper bushings may be replaced with bronze bushings P/N 1196185 or P/N 1196185. Original caliper pistons may be replaced with vented caliper piston P/N 1196184; no other modification allowed. Wilwood caliper with bracket universal fit P/N 800038 may be used as delivered with no modification of any kind. Wilwood knock back spring (2.63 lbs.) P/N 800045 may be used as delivered with no modification of any kind;
Show 4 more lines
maximum of one spring per caliper." P2 Engine Table Spec Line Engine Series
A specification table follows in the original; it is not shown here.
T2 Honda Civic Type R Tire Size Increase
#33672 from Marty Grand · Rule change · TB 23-03 (2023-03 Fastrack)
fasterT2 Honda Civic Type-R tire size increases from 275 to 295.
In T2 Spec Lines, Honda Civic Type-R (2017-), change Tire Size as follows: "275 295"
SRF3 Update SRF Bodywork Fitment Rule
#33765 from Robey Clark · Rule change · TB 23-03 (2023-03 Fastrack)
neutralSRF3 tail sections allowed on SRFs with GEN3 airbox shimming up to 19 mm; alternate dash panel P/N 180100 or 180101 relocated in rules.
In Spec Racer Ford, GCR section 9.1.8.D.1.E, change as follows: "j. Optional Bodywork Modification: Viewing the tail section of the car from behind, draw a vertical line at the left and right ends of the outer vents from the bottom edge of the bodywork up to a point two (2) inches below the crease at the lower edge of the vented panel. Make a vertical cut at each line. The horizontal cut is to be one (1) inch below the crease at the base of the vented panel. Leave a one (1) inch radius at each corner. Air Scoop (P/N 190000) must be installed in conjunction with rear cutout per Enterprises installation instructions. SRF3 tail sections are allowed on SRFs. For purposes of tail section to center section fitment with the GEN3 airbox, shimming is allowed at the rear of the center section. Shim material may be up to 19 mm (0.75") thick along the 1" upper square sidepod
Show 11 more lines
tube. Mounting location cannot be modified or added. Shim material must be securely attached, but must not be welded. An alternate dash panel has been approved for use in Spec Racer Fords. The dash will be furnished by Enterprises only. P/N 180100 or 180101 k. Required Bodywork Modification: A 22.5" diameter wheel arch shall be cut in each side of the tail section. Viewing the tail section from the side, draw a vertical line at the drive axle centerline. Locate the top of the wheel arch at a point measured from the bottom edge of the tail section 9.25" vertically along the centerline. The 22.5" diameter circle intersects the bottom edge of the tail section 11.1" either side of the centerline. The tail section may be reinforced in the forward and aft portions of the wheel arch. Dimension tolerance is +/- 0.75". l. An alternate dash panel has been approved for use in Spec Racer Fords. The dash will be furnished by Enterprises only. P/N 180100 or 180101."
T2 Allowance of any nonmetallic bushing material in T2
neutralT2 upper and lower control arm bushings can now use polyurethane, delrin, or alternate synthetic materials.
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."
T2 Allow Adjustable stabilizer bar links
#33861 from John Heinricy · Rule change · TB 23-04 (2023-04 Fastrack)
neutralT2 Cadillac CT4-V Blackwing now permits adjustable sway bar end links.
In T2 Spec Lines, Cadillac CT4-V Blackwing (2022-), add to Notes as follows: "Adjustable sway bar end links permitted."
T2 C5 Z06 Straight Line Speed
#33575 from Charlie Abell · Rule change · TB 23-05 (2023-05 Fastrack)
slowerT2 Chevrolet Corvette C5 Z06 restrictor increases from 53mm to 56mm; 58mm option removed.
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
FA E&O - Correct Pro Formula Mazda spec line dimensional equivalent
#34085 from Club Racing Board · Rule change · TB 23-05 (2023-05 Fastrack)
fasterFA Pro Formula Mazda maximum bodywork width behind front wheels increases to 51.97 inches.
In FA Table 2, Pro Formula Mazda spec line, change as follows: "The overall maximum width of the bodywork behind the front wheels shall not exceed 132cm (51.17 51.97 inches)."
SRF3 Update SRF Front W2 Rain Tire Part Number
#34118 from Robey Clark · Rule change · TB 23-05 (2023-05 Fastrack)
neutralSRF Hoosier front rain tyre part number changes from 46100 to 46101 P185/65R13 W2.
In SRF, GCR section 9.1.8.D.1.X.f, change as follows: "Front – Hoosier P/N 46100 1 P185/65R13 W2"
FA Add new spec line for MSR Formula Mazda FMzR to Table 2
#34139 from Club Racing Board · Rule change · TB 23-05 (2023-05 Fastrack)
neutralFA MSR Formula Mazda FMzR added to Table 2 classification.
RM 23-06 – MSR - FMzR Formula Atlantic Classification dated 4/21/2023 In FA Table 2, add a spec line as follows:
T2 2009 Porsche Cayman Classing Request
#34147 from Lisa Hunsicker · Rule change · TB 23-06 (2023-06 Fastrack)
neutralT2 Porsche Cayman S model year range extended from 06-08 to 06-09.
In T2 Spec Lines, Porsche Cayman S (06-08), change year as follows: "Porsche Cayman S (06-08) (06-09)"
SRF3 Hoosier SRF Wet Front Tire Rule Update
#34189 from Robey Clark · Rule change · TB 23-06 (2023-06 Fastrack)
unclearSRF Hoosier wet front tire updated to P/N 46100 P185/60R13 H20 or W2.
In SRF, GCR section 9.1.8.D.1.X.f, change as follows: "Wet: Front – Hoosier P/N 46100 P185/60R13 H20 or W2 Rear – Hoosier P/N 46105 P205/60R13 H20 or W2 Ground clearance is 2.5" with driver as raced when P185/60R13 (H20 or W2) tires are used."
FA Simplify Pro Formula Mazda wheel allowance
#34190 from Club Racing Board · Rule change · TB 23-06 (2023-06 Fastrack)
unclearFA Pro Formula Mazda front wheels widen to 10 in. max; rear wheels narrow to 14 in. min.
In FA, Pro Formula Mazda spec line, change wheel width as follows: "Pro Mazda series wheels
A specification table follows in the original; it is not shown here.
T2 370Z Obsolete Parts & NISMO Alternatives to SPL Parts
neutralT2 Nissan 370Z allows NISMO suspension alternatives to SPL parts; rear toe arms removed from permitted list.
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.
T2 Rules Clarification for Mazda RX8 Spec Line
#34395 from Colin Koehler · Rule change · TB 23-08 (2023-08 Fastrack)
neutralT3 Mazda RX-8 removes transmission/final drive pairing requirement; T4 removes same requirement, adds Mazdaspeed radiator and coil spring kit.
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:
Show 2 more lines
(F) Mazda Motorsports- 0000- 04-9700-08 or Eibach- 0800.250.0700 (R) Mazda Motorsports- 0000-04-9400-07 or Eibach 0700.250.0400, and helper 0000-04-9926 allowed. Alternate sway bars allowed max 32mm (f) 19mm (r)."
T2 rule book corrections
#34437 from Chi Ho · Rule change · TB 23-08 (2023-08 Fastrack)
fasterT3 BMW 320i (14-15) gains aftermarket intercooler permission; T4 loses it.
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."
T2 Corvette LS2 Restrictor Plate Adjustment
#34456 from Brian LaCroix · Rule change · TB 23-08 (2023-05 Fastrack)
fasterT2 Chevrolet Corvette C6 LS2 restrictor plate increases from 58mm to 60mm flat plate.
In T2 Spec Lines, Chevrolet Corvette C6 Coupe / Grand Sport (05-13), change Notes as follows: "LS2: 58mm 60mm flat plate restrictor is required."
T2 Ride Height Correction for the T3 Solstice.
#34615 from Joe Aquilante · Rule change · TB 23-08 (2023-08 Fastrack)
neutralT3 Pontiac Solstice GXP minimum ride height set to 3 inches.
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."
T2 Blacking Cadillac Fuel Capacity
#34624 from John Heinricy · Rule change · TB 23-08 (2023-05 Fastrack)
neutralT2 Cadillac CT4-V Blackwing permitted to use Radium fuel surge tank behind fireproof bulkhead.
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."
SRF3 SRF Radiator Rule Update
#34805 from Robey Clark · Rule change · TB 23-10 (2023-10 Fastrack)
neutralSRF radiator rule clarified: P/N 480466 replaceable with Automotive P/N 1R698, CU698 or manufacturer equivalent with documentation.
In SRF, GCR section 9.1.8.D.1.V.j, change as follows: "Radiator - Enterprises new style P/N 480465 (requires baffle P/N 480464) or P/N 480466 can be used. P/N 480466, may can be replaced with Automotive P/N 1R698, CU698 or equivalent OEM manufacturer justified by one cross-reference chart equivalent, as long as the size, shape, and material are the same as the original P/N. The capacity, core thickness, etc., cannot be changed even if allowed under the above. The competitor is responsible for providing this documentation of the cross-reference P/N."
T2 M2 CS RACING
#35122 from Clark Giguiere · Rule change · TB 23-12 (2023-12 Fastrack)
neutralT2 BMW M2 CS Cup 2020- permitted to add hood vents conforming to 9.1.9.2.D.8.a.7.
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."
SRF3 Update SRF Rain / Brake Rule
#34706 from Robey Clark · Rule change · TB 23-09 (2023-09 Fastrack)
neutralSRF rain/brake light now requires Super Bright LEDs Inc. P/N PT-STRB-R24 with specific connector and rain light switch.
In SRF, GCR section 9.1.8.D.1.W.l, change as follows: "A Super Bright LEDs Inc. rain / brake light comprised of a single standard trailer oval lamp, 2-1/4 inches x 6-1/2 inches, with incandescent or LED illumination, P/N PT-STRB-R24, is required in the original roll hoop mounting location. This rule supersedes GCR section 9.3.32.B.2 effective 1/1/2024 through 12/31/2024. No changes may be made to the original 3-pin connector on the wiring harness. The secondary filament of the brake light assembly shall must be connected to a switch enabling its use as a rain light."
SRF3 Update SRF Brake Light Rule v1
#34853 from Robey Clark · Rule change · TB 23-10 (2023-10 Fastrack)
neutralSRF requires Super Bright LEDs P/N PT-STRB-R24 rain/brake light with strobing capability and specific wiring.
In SRF, GCR section 9.1.8.D.1.W.l, change as follows: "A Super Bright LEDs Inc. P/N PT-STRB-R24 (SCCA Enterprises P/N 180427A) rain / brake light, P/N PT-STRB-R24, is required in the original roll hoop mounting location. This rule supersedes GCR section 9.3.32.B.2 effective 1/1/2024 through 12/31/2024. No changes may be made to the original 3-pin connector on the wiring harness. An SCCA Enterprises P/N 1190503 Strobing Brake Light Pigtail is required. The secondary filament of the brake light assembly must be connected to a switch enabling its use as a strobing rain light. A Strobing Brake Light Kit P/N 1168003 is available, which includes the brake light and pigtail."
T2 Rebalance Blackwing Cadillac T2
#35079 from John Heinricy · Rule change · TB 24-01 (2024-01 Fastrack)
fasterT2 Cadillac CT4-V Blackwing rear wheels widen from 18 x 10 to 18 x 11.
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)"
T2 M2 CS RACING
#35130 from Clark Giguiere · Rule change · TB 24-01 (2024-01 Fastrack)
fasterT2 BMW M2 CS Cup drops 50 lbs to 3550; M235iR drops 50 lbs to 3300.
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"
T2 Spec Corvette in T2
#35139 from David Sanders · Rule change · TB 24-01 (2024-01 Fastrack)
fasterT2 Spec Corvette minimum weight drops 175 lbs to 3200, tire rules tighten to Nankang NS-2R only.
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."
T2 T2 Viper BoP
#35155 from Scotty B White · Rule change · TB 24-01 (2024-01 Fastrack)
slowerT2 Dodge Viper SRT-10 rear tyre narrowed from 345/30 to 335/30.
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"
T2 BOP Adjustment for 5.0L Mustangs
#35156 from Kurt Rezzetano · Rule change · TB 24-01 (2024-01 Fastrack)
slowerT2 Ford Mustang GT 5.0L three generations gain 50-75 lbs minimum weight; restrictors increase to 58-60mm.
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
T2 Take at Look at T-2 BOP
#35161 from Joe Aquilante · Rule change · TB 24-01 (2024-01 Fastrack)
fasterT2 Chevrolet Camaro 1LE minimum weight drops 50 lbs to 3500, restrictor opens to 58mm flat plate.
In T2 Spec Lines, Chevrolet Camaro, 1LE (2016-), change as follows: Min Weight: "3550 3500" Notes: "56mm 58mm flat plate restrictor required."
T2 C5 Corvette Spec Line Oversight
#35169 from Carl Fung · Rule change · TB 24-01 (2024-01 Fastrack)
fasterT2 C5 Z06 removes restrictor note from weight; C5/C6 Corvettes increase restrictors to 59mm, 63mm LS2, 53mm LS3.
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
T2 Requested Update of Model Years of 370Z
#35231 from Richard Kulach · Rule change · TB 24-01 (2024-01 Fastrack)
neutralT3 Nissan 370Z model years expanded to include NISMO Edition through 2022.
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)"
SRF3 SRF / SRF3 Rule Updates
#35268 from Robey Clark · Rule change · TB 24-01 (2024-01 Fastrack)
neutralSRF adds brake duct and pedal extension rules, rear shift cable clamp option, camber limit to 5.0°, radiator opening height 3.5" ±0.5", and P2 engine restrictor changes.
In SRF, GCR section 9.1.8.D.1.H, add the following: "NO MODIFICATIONS ALLOWED. Front brake ducts are required, attached to the openings in the lower radiator baffles, any flexible 4" duct material allowed, installed length minimum 12" maximum 36" in length. Must be securely fastened, Bracket Part # P/N 800368 can be used. Shall Must serve no other purpose. An extension may be welded to the side of the throttle pedal to improve heel-and-toe braking. Master cylinder casting / location must be used as delivered on P/N 180110 Pedal Mounting support. Aeroquip style -3 braided stainless flex lines only, must attach to all brake components without modification. Brake pad "anti-rattle" clips must be removed." In SRF, GCR section 9.1.8.D.1.V, add the following:
Show 23 more lines
"ii. Rear SADEV shift cable aluminum two-piece style clamp may be used. The P/N WM302007A clamp must serve no other purpose." In SRF, GCR section 9.1.8.D.1.X.k, add the following: "Negative camber shall must not exceed 5.0 degrees absolute maximum front and rear." In SRF, GCR section 9.1.8.D.1.AA.b, add the following: "2. Height of the radiator opening vertical surface 3 1/2“ +/- 1/2"." P2 Engine Table B.1 2008 and older Stock Suzuki, Yamaha, Honda, BMW 38.5mm P2 Engine Table B.2 Not required P2 Engine Table B.3 38.5mm Modified Engine 950 lbs. 1005cc max P2 Engine Table B.1 2008 and older 37mm P2 Engine Table B.2 Not required P2 Engine Table B.3 39mm Stock Engine 1050 lbs.
T2 2015+ Mustang Sway Bar and A-Arm Request
#35154 from Scotty B White · Rule change · TB 24-02 (2024-01 Fastrack)
neutralT2 Mustang GT 5.0L 15-17 now permits BMR rear upper control arm camber links part #UTCA064.
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
T2 Brake Kits
#35245 from David Woodle · Rule change · TB 24-02 (2024-01 Fastrack)
neutralT2 Chevrolet Camaro SS, 1LE, Corvette C5/C6, Z06, and Pontiac Firebird, Solstice GXP now allow four or six piston front calipers.
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.”
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."
neutralT4 now permits C-Spec cars to compete alongside B-Spec cars.
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."
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."
neutralT2-T4 spec lines for 46 cars expire 12/31/24; appeal required to continue.
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)
Show 46 more lines
Cadillac CTS-V (06-07) Chevrolet Camaro SS (98-02) Honda Civic (2017-) Saturn Sky / Convertible (07-09) Subaru Impreza WRX STi (03-07) Subaru Impreza WRX STi (08-11) T3: Audi S4 (10-11) Audi S4 (12-14) Audi TTS Coupe (10-11) Cadillac ATS (2015) Chevrolet Cobalt (05-07) Dodge SRT-4 (03-05) Ford Fiesta ST (2014-) Hyundai Genesis Coupe (2010-) Hyundai Veloster Turbo (18-21) Mazda RX-8 Base/R3/Sport/ GT (04-12) Mini Cooper S (2016-) Subaru WRX (02-05) Toyota Camry (11-15) T4: Acura Integra GS-R VTEC (3 or 4 door) (94-01) Audi A4 V-6 (96-01) / Volkswagen Passat 2.8 V6 (96-05) BMW 320i (14-15) Chevrolet Cobalt SS, Sport Coupe (06-10) Chevrolet Sonic RS (2011-) Chrysler/Dodge Neon ACR SOHC (4 door) (01-02) Dodge Dart (14-15) Dodge/Plymouth Neon ACR SOHC/DOHC (2/4 door) (95-99) Fiat 500 Abarth (12-14) Ford Focus SVT (02-04) Ford Focus ZX4 ST (05-06) Ford Focus (08-11) Ford Mustang V-6 (01-04) Honda Accord LX & EX (03-07) Honda Accord LX-S/EX/EX-L (08-12) Honda Civic Coupe Si (99-00) Honda Civic SI (02-03) Hyundai Elantra GLS (11-12) Hyundai Tiburon V-6 (03-08) Hyundai Veloster Turbo/ R-Spec (14-15) Kia Forte Koup and Sedan LX/EX (10-13) Kia Forte Koup and Sedan SX (10-13) Kia Forte Koup (14-15) Mazda Protégé ES (2000) Mazda Protégé 5 (02-03)
T2 Reply to letter #35161 and #31661
#35384 from Andrew Aquilante · Rule change · TB 24-02 (2024-02 Fastrack)
slowerT2 Chevrolet Camaro 1LE minimum weight increases to 3575 lbs, restrictor plate widens to 60mm.
In T2 Spec Lines, Chevrolet Camaro, 1LE (2016-), change as follows: Min Weight: "3500 3575" Notes: "58mm 60mm flat plate restrictor required"
Cal Club 2024 → Cal Club 2025 2024-02-23 to 2025-02-22
neutralT2 and T3 Nissan 370Z brake rotors enlarged: front 320x28 to 355x32mm, rear 320x16 to 350x20mm vented.
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”
T2 Letter #35154 2018+ Mustang GT Expansion
#35488 from Michael Kamalian · Rule change · TB 24-03 (2024-03 Fastrack)
neutralT2 Mustang GT 5.0L 2018+ now permits BMR rear upper control arm camber links part #UTCA064.
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
T2 Brake Request for 2009 Porsche Cayman
#35723 from Jason Ott · Rule change · TB 24-04 (2024-04 Fastrack)
slowerT2 Porsche Cayman S 06-09 allows StopTech ST60/ST40 brake kit with 50 lb penalty.
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."
T2 Allow T4 and T3 RX8 to Disable/Remove Factory Oil Inj.
#35761 from David Mead · Rule change · TB 24-05 (2024-05 Fastrack)
unclearT3 and T4 Mazda RX-8 may remove or disable factory oil injection system.
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."
T2 Competition Adjustment Request/Wheel Size of E46
#35895 from David Newman · Rule change · TB 24-05 (2024-05 Fastrack)
fasterT2 BMW M3 01-06 max wheel size increases from 18 x 9 to 18 x 10 inch.
In T2 Spec Lines, BMW M3 (01-06), change Max Wheel Size (inch) as follows: "18 x 9 18 x 10"
T2 Driveshafts
#35916 from Scotty B White · Rule change · TB 24-05 (2024-05 Fastrack)
slowerT2, T3, T4 driveshafts may use alternative materials or one-piece units; non-OEM adds 25 lbs.
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."
SRF3 SRF3 Alternator Pulley Update In
#36095 from Robey Clark · Rule change · TB 24-06 (2024-06 Fastrack)
fasterSRF3 alternator pulley minimum weight reduced from 12 oz to 11 oz.
SFR3, GCR section 9.1.8.D.2.H.17, change as follows: "Alternator Pulley: P/N G902130, or P/N G902130A, or P/N G902131 (six row). 12 11 oz minimum weight."
T2 Mustang T2/T3
#35877 from Scotty B White · Rule change · TB 24-07 (2024-07 Fastrack)
unclearFord Mustang GT 5.0L and V6 now permit Track/Performance Package parts in T2 and T3.
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
T2 S550 Brakes
#35926 from Scotty B White · Rule change · TB 24-07 (2024-07 Fastrack)
slowerT2 Ford Mustang S550 5.0 Gen2/Gen3 gains 100 lbs with stock or Brembo 355mm brakes.
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."
T2 T2-T4 Driveshaft Mistake...?
#36050 from Scotty B White · Rule change · TB 24-07 (2024-07 Fastrack)
fasterT2-T4 Ford Mustangs: remove 25 lbs penalty for non-OEM driveshaft, clarify alternate driveshaft allowances.
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."
Show 12 more lines
In T2 Spec Lines, Ford Mustang GT 5.0L (15-17), change Notes as follows: "Alternate metallic driveshaft is allowed." In T2 Spec Lines, Ford Mustang GT 5.0L (2018-), change Notes as follows: "Alternate metallic driveshaft is allowed." In T2 Spec Lines, Ford Mustang Coupe GT & Shelby GT 4.6L (05-10), change Notes as follows: 'An Aluminum driveshaft is allowed." "Alternate metallic driveshaft is allowed." In T3 Spec Lines, Ford Mustang Coupe GT & Shelby GT 4.6L & Cal. Special (05-10), change Notes as follows: "An Aluminum driveshaft is allowed." "Alternate metallic driveshaft is allowed." In T3 Spec Lines, Ford Mustang V6 (11-14), change Notes as follows: "Driveshaft from Alternate metallic driveshaft is allowed."
Applies to Ford Mustang on this page: Scotty B White
T2 request for allowance of 6 piston calipers for T2 C5 corvettes
#36126 from Joe Aquilante · Rule change · TB 24-07 (2024-07 Fastrack)
fasterT2 Corvette C5, Camaro SS, Firebird, Solstice GXP, C6 allow four or six piston front calipers.
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.
T2 B8/8.5 Audi S4 T3 and T2
#36195 from Brian Leib · Rule change · TB 24-07 (2024-07 Fastrack)
neutralAudi S4 (2000-2002) moves to T3 with 3400 lbs minimum weight, 38mm turbo inlet restrictor required.
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.
unclearT2 Corvette C6 LS2 restrictor increases to 63mm; Camaro 1LE weight drops to 3500 lbs, restrictor tightens to 58mm FRP.
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"
T2 Subaru Appeal
#36258 from Anthony Piselli III · Rule change · TB 24-08 (2024-08 Fastrack)
neutralT2 Subaru Impreza WRX STi (03-07) and (08-11) expiration notes removed.
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**"
SRF3 Update Rain Tire Rule and Hoosier Decal Placement
#36436 from Robey Clark · Rule change · TB 24-08 (2024-08 Fastrack)
slowerSRF wet tires: P185/60R13 H20/W2 option removed; P185/65R13 W2 front now required with P205/60R13 W2 rear.
In SRF, GCR section 9.1.8.D.1.X.f, change as follows: "Wet: Front – Hoosier P/N 46100 P185/60R13 H20 or W2 Rear – Hoosier P/N 46105 P205/60R13 H20 or W2 Ground clearance is 2.5” with driver as raced when P185/60R13 (H20 or W2) tires are used. OR Front – Hoosier P/N 46101 P185/65R13 W2 Rear – Hoosier P/N 46105 P205/60R13 W2
Show 8 more lines
1. It is forbidden to regroove tires. 2. The use of tire warmers or cooling methods other than natural air convection or conduction is prohibited. The penalty for violation will be the loss of qualifying times and/or the disqualification of race results. 3. Hoosier SRF/SRF3 Decal Placement: Four (4) "Hoosier" decals are required in the following locations: Two (2) 11" X 3" decals on the vertical plane of the front nose to the outside of the cooling opening on each side and two (2) 18" X 5" decals, one on each side of the engine cover or above the rear wheel openings on the vertical plane. Hoosier decals are available, free of charge, from all Hoosier tire distributors including SCCA Enterprises."
T2 S550 Brakes
#36571 from Club Racing Board · Rule change · TB 24-08 (2024-08 Fastrack)
fasterT2 Ford Mustang 5.0L gets 100 lb weight reduction with 4-piston Brembo brakes and 355mm rotors; EcoBoost brake note removed.
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
SRF3 Update to Letter 36619 with new Hoosier Contingency Decal Info
#36624 from Robey Clark · Rule change · TB 24-09 (2024-09 Fastrack)
neutralSRF Hoosier decal requirement reduced from four decals in specific locations to three decals with simpler placement rules.
In SRF, GCR section 9.1.8.D.1.X.f.3, change as follows: "Four (4) "Hoosier" decals are required in the following locations: Two (2) 11" X 3" decals on the vertical plane of the front nose to the outside of the cooling opening on each side and two (2) 18" X 5" decals, one on each side of the engine cover or above the rear wheel openings on the vertical plane. Hoosier decals are available, free of charge, from all Hoosier tire distributors including SCCA Enterprises Per Hoosier's contingency program, three (3) decals are required to qualify for contingency awards. One (1) decal must be located on each side of the car and one (1) decal must be visible on the front."
SRF3 Update SRF3 Air Filter Rule
#36681 from Robey Clark · Rule change · TB 24-10 (2024-10 Fastrack)
unclearSRF3 air filter rule removes K&N RC-9160 option, leaving only P/N WM301020 allowed.
In SRF, GCR section 9.1.8.D.2.H.23, change as follows: "Air Filter: P/N WM301020 or K&N RC-9160"
SRF3 Update SRF Brake Rotor Thickness
#36687 from Robey Clark · Rule change · TB 24-10 (2024-10 Fastrack)
slowerSRF brake rotor minimum thickness increases from 12.20mm to 13.25mm, Wilwood vented rotor P/N 800065.
In SRF, GCR section 9.1.8.D.1.X.g, change as follows: "Brakes: Hawk Blue 9012 pads P/N 801993 must be used. Wilwood vented rotor P/N 800065 shall must be used as delivered with no machining of any kind. Minimum thickness 12.20mm (0.481”) 13.25mm (0.522”)."
SRF3 Hoosier Tire Decal Placement
#36739 from Robey Clark · Rule change · TB 24-10 (2024-10 Fastrack)
neutralSRF3 Hoosier logo placement changes from four decals to three decals in different locations.
In SRF, GCR section 9.1.8.D.2.B, change as follows: "Mandatory identification: "SRF3" near the side car numbers. "Hoosier" logo (4) on both sides front lower outer corners of the nose and each side of the tail. Three (3) "Hoosier" logos, one (1) on each side of the car and one (1) on the center front of the car."
T2 Spec Corvette Change for T2
#37127 from Joe Aquilante · Rule change · TB 24-11 (2024-11 Fastrack)
neutralT2 Spec Corvette now allows 295 R compound DOT tires as alternative to Nankang NS-2R.
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."
T2 Redundant Verbiage Regarding Mustang Spec Lines for Driveshaft
#36484 from David Mead · Rule change · TB 24-12 (2024-12 Fastrack)
neutralT2 and T3 Mustang spec lines remove redundant driveshaft alternate/aluminum allowance wording.
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."
Show 4 more lines
In T3 Spec Lines, change Notes as follows: Ford Mustang Coupe GT & Shelby GT 4.6L & Cal. Special (05-10): "Alternate driveshaft is allowed." Ford Mustang V6 (11-14): "Alternate driveshaft is allowed." Ford Mustang V6 (05-10): "An Aluminum driveshaft is allowed."
T2 Request Less Restriction for Ls-3 Engined C6 Corvette
#36810 from Joe Aquilante · Rule change · TB 24-12 (2024-12 Fastrack)
fasterT2 Chevrolet Corvette C6 LS3 restrictor increases from 53mm to 56mm flat plate.
In T2 Spec Lines, Chevrolet Corvette C6 Coupe / Grand Sport (05-13), change Restrictor Required as follows: "LS3: 53mm 56mm flat plate restrictor"
neutralT2, T3, T4 fuel cell installations may remove charcoal canisters, emissions valves, and sensors.
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."
neutralT2, T3, T4 brake component wording clarified: 2-piece rotors allowed in T2 within 5% OE diameter, T3 within 2% OEM diameter.
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
Show 10 more lines
the front fascia. The stock headlamp location is not permitted for brake ducting. Two alternative duct openings may be created by the removal of the fog lights or 2 sections up to 14.5 square inches each of stock false grills originally located in the front fascia. 6. Stock replacement brake rotors may be obtained from sources other than the manufacturer provided they are the exact equivalent of the stock rotors. In T2 only - 2-piece rotors with ferrous metal rotor disks and aluminum hats are allowed, must be within 5% of OE diameter. In T3 only - 2-piece front rotors with ferrous metal rotor disks and aluminum hats are allowed, must be within 2% of OEM diameter. Drilled and slotted rotors are permitted. 7. Parking brakes, mechanisms, and actuating components may be removed. 8. Brake vacuum reservoirs sized 0.50 gallons or smaller are permitted. The port or fitting at the vacuum source may not be modified, enlarged or relocated. The vacuum reservoir and brake booster must be a closed system."
neutralT2, T3, T4 fuel cell cars may remove charcoal canisters, emissions valves, and sensors.
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."
T2 Move Spec Boxster to T4
#37158 from Rob Piekarczyk · Rule change · TB 24-12 (2024-12 Fastrack)
neutralPorsche Spec Boxster moves to T4, minimum weight 2750 lbs, requires 3 Super Tour events before Runoffs eligibility.
In T4 Spec Lines, classify Porsche Spec Boxster, as follows:
A specification table follows in the original; it is not shown here.
T2 Corvette Wheels
#37169 from Brian LaCroix · Rule change · TB 24-12 (2024-12 Fastrack)
fasterT2 Chevrolet Corvette C6 Coupe/Grand Sport wheels widened to 18×11 or 19×13.
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)"
T2 BMW 320i Spec Line
#37204 from chi ho · Rule change · TB 24-12 (2024-12 Fastrack)
neutralT4 BMW 320i 14-15 Spec Line expires 12/31/24 removed; Turner Motorsports intercooler #024703TMS02 allowed.
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."
T2 Classification for a 2005 Cadillac CTS 3.6 liter 6 speed manual
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)
Show 49 more lines
Honda Civic Type-R (2017-) Saturn Sky / Convertible (07-09)" In T3, Effective 1/1/2025, delete for following Spec Lines in their entirety: "Audi TTS Coupe (10-11) Cadillac ATS (2015) Chevrolet Cobalt (05-07) Dodge SRT-4 (03-05) Ford Fiesta ST (2014-) Hyundai Genesis Coupe (2010-) Hyundai Veloster Turbo (18-21) Mini Cooper S (2016-) Toyota Camry (11-15)" In T4, Effective 1/1/2025, delete for following Spec Lines in their entirety: "Acura Integra GS-R VTEC (3 or 4 door) (94-01) Audi A4 V-6 (96-01) / Volkswagen Passat 2.8 V6 (96-05) Chevrolet Cobalt SS, Sport Coupe (06-10) Chevrolet Sonic RS (2011-) Chrysler/Dodge Neon ACR SOHC (4 door) (01-02) Dodge Dart (14-15) Dodge/Plymouth Neon ACR SOHC/DOHC (2/4 door) (95-99) Fiat 500 Abarth (12-14) Ford Focus SVT (02.5-04) Ford Focus ZX4 ST (05-06) Ford Focus (08-11) Ford Mustang V-6 (01-04) Honda Accord LX & EX (03-07) Honda Accord LX-S/EX/EX-L (08-12) Honda Civic Coupe Si (99-00) Honda Civic SI (02-03) Hyundai Elantra GLS (11-12) Hyundai Tiburon V-6 (03-08) Hyundai Veloster Turbo/ R-Spec (14-15) Kia Forte Koup and Sedan LX/EX (10-13) Kia Forte Koup and Sedan SX (10-13 Kia Forte Koup (14-15) Mazda Protégé ES (2000) Mazda Protégé 5 (02-03) Mazda6 s (03-07) Mitsubishi Eclipse GT (00-05) Nissan Sentra SER (02-03) Pontiac Firebird V-6 (96-02) Scion tC (03-07) Subaru Impreza (non-turbo) (04-06) Toyota Celica GT (00-05) Toyota Celica GTS/GT (00-05) Volkswagen Golf TDI (2010) Volkswagen Passat (12-14) Volkswgen Passat TDI (12-14) Volkswgen Passat 1.8T (2014-)"
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
Show 8 more lines
other material is allowed. New air shroud cannot be wider than inside of frame rails. The front bumper must remain in factory shape – unmolested and air shroud must mount to it in factory location. Upper Radiator Support must retain factory location. Factory air dam must remain in its factory location. All factory suspension pick up points must be maintained. Trackspec’s rear upper coilover offset shock mount may be used, part number C56UPRMNT. The following "Spec Corvette +" allowances are permitted with a base weight of 3300 lbs: 1) Penske double adjustable shocks, 2) dry sump, 3) battery relocation, 4) Quaife limited slip differential, 5) T2 4 piston 13" front brake system, 6) coil springs other than Eibach part number 0800.225.0550."
T2 Mustang Update backdate
#37275 from Scotty B White · Rule change · TB 25-02 (2025-02 Fastrack)
unclearT2 Mustang GT 5.0L combines 2015-17 and 2018-23 with different restrictors: 63mm for Gen 2, 60mm for Gen 3.
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-
Show 7 more lines
3B236-A, Solid Differential Bushings part#M-4425-M, Short Shift Kit part#M- 7210-M8, Solid Subframe Bushings part#M- 5872- M, Dampers in Handling Pack part #M-18000-F, Ford OEM Performance Package Brembo front BBK and 380mm rotors permitted (Ford PN M-2300-V) at no weight penalty. Alternate driveshaft is allowed. Springs up to 800#/in front and rear permitted. Alternate metallic driveshaft permitted. Rear spring relocation to shock permitted with kit TBD. Ford Racing oil pan #M-6675- M50BR permitted. BMR rear upper control arm camber links part #UTCA064 permitted. Track/Performance Package parts permitted. 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."
Applies to Ford Mustang on this page: Scotty B White
T2 BOP Adjustment for 2016 - Camaro SS/1LE
#37434 from Kurt Rezzetano · Rule change · TB 25-02 (2025-02 Fastrack)
slowerT2 Chevrolet Camaro 1LE gains 100 lbs to 3600, restrictor increases to 62mm FPR.
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"
T2 BMW M235iR TCS CHANGE REQUEST
#37470 from Werner Kordas · Rule change · TB 25-02 (2025-02 Fastrack)
neutralT2 BMW M235iR (-2016) now permits oil cooler, radiator per touring rules, and silicone charge pipe.
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."
T2 Request to Classify Club Spec in Appropriate Touring Classes
#37523 from Andrew Benagh · Rule change · TB 25-02 (2025-02 Fastrack)
neutralFord SCCA Club Spec Mustang classified T3 at 3350 lbs with driver; Mazda SCCA Club Spec MX-5 classified T4 at 2500 lbs with driver.
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.
FA Classify FR European Championship car as spec line car in Table 2
#37658 from Club Racing Board · Rule change · TB 25-02 (2025-02 Fastrack)
neutralFA adds Tatuus F.3 T-318 or FR-19 as spec line car in Table 2 for Formula Regional European Championship.
In FA Table 2, add the following: Table 2 (Spec Line Cars) Car Engine Wheel Width (in) ± .060 Aero Transmission Weight Notes
A specification table follows in the original; it is not shown here.
Cal Club 2025 → Cal Club 2026 2025-02-22 to 2026-02-21
slowerT2 BMW M2 CS Cup requires Red power stick #8324085 instead of Purple #8324089; Corvette C5 Z06 restrictor reduces to 58mm from 59mm.
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
FA Update Formula Renault 2.0 spec line notes
#37853 from Club Racing Board · Rule change · TB 25-03 (2025-03 Fastrack)
neutralFA Formula Renault 2.0 (10-17) spec notes clarified: engine sealed, manual compliance required, tire choice unrestricted, no alterations except repairs.
In FA Table 2, Formula Renault 2.0 (10-17) spec line, change the notes as follows: "Engine must remain sealed. Car must comply with year-specific Formula Renault 2.0 manual, technical regulations, and all applicable bulletins found here:. Competitors must have copies of these materials in their possession and present them upon request. https://sites.google.com/a/renault-sport.com/formule-renault-2-0-en/bulletins-techniques/2017, https://sites.google.com/a/renault-sport.com/formule-renault-2-0-en/manuel-d-utilisateur/2017. The following exceptions apply: Tire choice is unrestricted. No part of the car may be altered from original Formula Renault 2.0 components, except for necessary repairs that do not affect performance."
neutralFord Mustang Challenge Darkhorse R newly classified in T2 with 58 mm restrictor, 3775 lbs minimum weight.
In T2 Spec Lines, classify the Ford Mustang Challenge Darkehorse R.
A specification table follows in the original; it is not shown here.
T2 T2 350Z Spec Line Cleanup
#37603 from Ben Slechta · Rule change · TB 25-04 (2025-04 Fastrack)
neutralT2 350Z (03-08) removes detailed OEM part numbers and consolidates permitted modifications into simplified allowance list.
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
Show 7 more lines
all SpecZ 2018 Edition rules. No other touring allowances beyond 2018 SpecZ edition rules or allowances listed here. Track/NISMO/S/R-Tune OEM aero options permitted, KW Motorsports: F&R 5600S-SZ350 permitted, Front sway bar max 37mm, Rear sway bar max 25mm, RRZ30 Oil Pump allowed, Performance alternative front upper control arms permitted, Spherical bearings allowed, Springs up to 700 lbs./in. front/rear permitted, Aftermarket flywheel permitted at minimum 14lbs, Z1 350Z Intake Power Mod Kit permitted, Aftermarket headers permitted, Cold air intake permitted, Stillen part #400338 permitted, Zspeed and Z1 alternative clutch slave permitted, Nissan rear diff cover #99996-35TDK or #383510C021 permitted, Nissan caliper kit: 41001-FR350 and/or 44011-RC350 permitted."
SRF3 Driver Safety & Comfort
#37966 from Robey Clark · Rule change · TB 25-04 (2025-04 Fastrack)
neutralSRF drivers with disabilities may modify seat and controls for safety and comfort with approval and logbook notation.
In SRF, GCR section 9.1.8.D.1.D, add the following: "f. Driver Safety and Comfort modifications to seat and controls for drivers with disabilities may be made only by approval. These modifications must be reported to SCCA Enterprises and noted in the car logbook. The modifications are approved only for the noted driver with disabilities. If the car is used by or sold to another driver, it must be returned to the previous standard configuration."
SRF3 Update SADEV transmission specs
#37992 from Club Racing Board · Rule change · TB 25-04 (2025-04 Fastrack)
fasterT2 Cadillac CT4-V Blackwing maximum tire size increases from 295 to 315.
In T2 Spec Lines, CT4-V Blackwing (2022-), change Tire Size Max as follows: “295 315”
FA Ligier JS F3 Tire Choice
#38434 from Rocco Magni · Rule change · TB 25-07 (2025-07 Fastrack)
neutralFA Ligier JS F3 front tires may be Hoosier 43363 240/580R13 MS, rear 43368 300/590R13 MS.
In FA Table 2, FR Americas Ligier JS F3 spec line, change the notes as follows: "Engine must be sealed in compliance with FR Americas or prior F3 Americas requirements. Car must comply with FR Americas rules, with the following exception: front tires may be Hoosier P/N 43363, size 240/580R13 in MS compound, and rear tires may be Hoosier P/N 43368, size 300/590R13 in MS compound. Competitors must have current copies of Formula Regional Americas Championship Sporting Regulations, Onroak Automotive Ligier JS F3 Information Manual, and HPD engine-related specifications and instructions in their possession and present them upon request."
T2 Incorrect Touring Heading
#38451 from Terry Hanushek · Rule change · TB 25-08 (2025-08 Fastrack)
neutralT2, T3, T4 Spec Lines table header changed from T2 to ET.
In T2-T4 Spec Lines, change Table Header as follows: "T2 ET"
T2 Clarifications needed to BMW M2 CS cup line
#38536 from Joe Aquilante · Rule change · TB 25-08 (2025-08 Fastrack)
unclearBMW M2 CS Cup 2020 must run Red power stick part #8324085, not Purple #8324089.
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
Show 5 more lines
or Touring rule allowances permitted unless noted below. It is permitted to remove door glass and mechanism. It is mandatory to run the “Purple” power stick part #8324089. Effective 3/1/2025 5 It is mandatory to run the “Red” power stick part #8324085. BMW exhaust part # 18302459928 allowed. Hot country package allowed including part numbers: (aKMK LH 17 10 8342846 1, aKMK RH 17 10 8328139 1, 17 10 8328135 1, 17 10 8328136 1, 17 10 8328137 1, 17 10 8328138 1, ISO7380-2 M5X14 10.9 ZNSW 17 10 8436008 2, 17 10 8417424 1.) Hood vents conforming to 9.1.9.2.D.8.a.7 are permitted."
slowerT2 Chevrolet Corvette C5 Z06 and C6 brake allowances clarified; stock calipers and rotors only for C5, specific sizes for C6.
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."
Effective 9/1/25 in SRF, GCR section 9.1.8.D.1.V.ff, add the following: "SRF3 Oil Cooler, P/N G480503 may be used as mounted per the GEN3 Assembly Manual. No fan permitted for SRF. HD Oil Cooler kit P/N G1148500 may be used as mounted per the GEN3 Conversion Manual." Effective 9/1/25 in SRF, GCR section 9.1.8.D.X.g, change as follows: "Brakes: Hawk Blue 9012 pads P/N 801993 must be used. Wilwood vented rotor P/N 800065 must be used as delivered with no machining of any kind. Minimum thickness 13.25mm (0.522”). The Renault Alliance solid front rotors may not be used. Rubber caliper bushings may be replaced with bronze bushings P/N 1196185 or P/N 1196185. Original caliper pistons may be replaced with vented caliper piston P/N 1196184; no other modification allowed. Wilwood caliper with bracket universal fit P/N 800038
Show 11 more lines
may be used as delivered with no modification of any kind. Wilwood knock back spring (2.63 lbs.) P/N 800045 may be used as delivered with no modification of any kind; maximum of one spring per caliper. 1. Hawk Blue pads P/N 801993 only 2. Wilwood Vented Rotor P/N 800065 only, as delivered, with no machining of any kind. Minimum thickness 13.25mm (0.522") 3. Wilwood universal caliper Kit P/N 1180008 as delivered, caliper only P/N 800038; Wilwood knock back spring P/N 800045 may be used as delivered, with no machining of any kind, and only one spring per caliper 4. Renault caliper rubber bushings may be replaced with bronze bushings P/N 1196185 or P/N 1196185A 5. Renault caliper piston may be replaced with P/N 1196184 vented piston as delivered, with no machining of any kind 6. Girling .750" Master Cylinder P/N 880358 as delivered, with no machining of any kind 7. Wilwood .750" Master Cylinder P/N 880357 as delivered, with no machining of any kind 8. Tilton .750" Master Cylinder P/N 880360 as delivered, with no machining of any kind"
SRF3 Add HD Oil Cooler
#38979 from Robey Clark · Rule change · TB 25-10 (2025-10 Fastrack)
neutralSRF3 adds HD Oil Cooler P/N G1148500 as alternative to standard cooler P/N G480503.
In SRF, GCR section 9.1.8.D.1.V.ff, change as follows: "SRF3 Oil Cooler, P/N G480503 or HD Oil Cooler P/N G1148500 may be used as mounted per the GEN3 Assembly Manual. No fan permitted for SRF. HD Oil Cooler kit P/N G1148500 may be used as mounted per the GEN3 Conversion Manual."
FA Re-Consider USF Pro 2000 Car for Formula Atlantic Class
neutralFA class adds USF Pro 2000 car eligibility for Formula Atlantic racing.
Effective 11/1/25 in FA Table 2, add the following:
T2 ND Gearset Request for T4
#39166 from Josh Smith · Rule change · TB 25-11 (2025-11 Fastrack)
neutralT3 and T4 Mazda MX-5 Miata models add approved gear kit PT#-0000-02-6100 to notes.
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."
T2 ND Spec Lines Wrong PT#'s
#39170 from Josh Smith · Rule change · TB 25-11 (2025-11 Fastrack)
neutralT4 Mazda MX-5 Miata/Club/RF (19-24) and (16-18) remove discontinued hardtop part #0000-07-5901; T3 MX-5 Miata (16-18) and Global Cup ND (16-21) same.
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
Show 20 more lines
0000-06-5410 allowed." In T4 Spec Lines, Mazda MX-5 Miata/Club (16-18), change Notes as follows: "Factory bolt-in roll bar/ cross member may be removed to facilitate roll cage installation. 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. Up to 500lb front and 300lb rear springs allowed. Mazda Motorsports Header part #0000-06-5410 allowed. Mazda tower brace 0000-04-5626 allowed. 3rd and 4th gear may be replaced with the following parts- (0000-02-5803-02, 0000-02-5803-01, 0000-02-5804-02, 0000-02-5." In T3 Spec Lines, Mazda MX-5 Miata (16-18), change Notes as follows: "Factory bolt-in roll bar/ cross member may be removed to facilitate roll cage installation. Header permitted. Cold air intake permitted. Front strut brace permitted. Front and rear sway bars permitted up to 35mm, Springs 800 front and 800 Rear max permitted. Any OEM or aftermarket hardtop permitted that retains the OEM roof silhouette including Mazda hardtop part #0000-07-5902- ND and part #0000-07-5901 (discontinued DG Motorsports top). If a hardtop is used, latches shall be replaced with positive fasteners. Retractable hardtop option permitted but must be disabled from moving action and positively fastened. In T3 Spec Lines, Mazda MX-5 Global Cup Miata (2016-2021) ND1, ND, change Notes as follows: "Shoulder harness installation must conform to FIA mounting specifications that are approved for this vehicle per section 6.2 FIA article 253, safety equipment. Must meet all ND2 MX-5 Global Cup rules. Any OEM or aftermarket hardtop is permitted that retains the OEM roof silhouette, including Mazda hardtop Mazda hardtop part #0000-07-5902-ND and #0000-07-5902-ND part #0000- 07-5901 (discontinued DG Motorsports). If a hardtop is used, latches shall be replaced with positive fasteners. OBD2 requirement does not apply. Ballast box may be removed. ND2s with sequential gearbox allowed +100 lbs.
T2 Touring 2 Post-Runoffs BOP Adjustments and Changes
fasterT2 Spec Corvette to 3200 lbs; Mustang 11-14 restrictor 60→62mm; Mustang 2015-23 tyre 295→315; 996 weights down to 3050/3000 lbs; 997.2 models restrictor 60→65mm, weights reduced 50 lbs.
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:
Show 11 more lines
"3600: 3150 3050 3400: 3000" In T2 Spec Lines, Porsche Carrera S 997.2 (06-08), change as follows: Restrictor: "60mm 65mm FPR" Weight: "3225 3175" In T2 Spec Lines, Porsche 911 / Carrera S 997.2 (09-12), change as follows: Restrictor: "60mm 65mm FPR" Weight: "3300 3250 In T2 Spec Lines, Porsche 911 / 997.2 GTS (09-12), change as follows: Restrictor: "60mm 65mm FPR" Weight: "3400 3350"
Applies to Ford Mustang on this page: Scotty B White
In T2 Spec Lines, Spec Corvette, add to Notes the following: "7) up to 7100 rpm Rev limit."
T2 Help the 2011-2014 s197Mustang GT and Boss302 Less Restriction
#38523 from Joe Aquilante · Rule change · TB 25-12 (2025-12 Fastrack)
fasterT2 Ford Mustang Boss 302 restrictor opens 56mm to 63mm; Mustang GT 5.0L 60mm to 65mm.
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
T2 Improving Competitiveness of Gen 5 Camaro SS
#39021 from Van Hunter · Rule change · TB 25-12 (2025-12 Fastrack)
fasterT2 Chevrolet Camaro SS/1LE (10-15) minimum weight reduced to 3575 lbs.
In T2 Spec Lines, Chevrolet Camaro SS/1LE (10-15), change Weight as follows: "3625 3575"
T2 Adjust T2 Darkhorse R
#39346 from Andrew Aquilante · Rule change · TB 25-12 (2025-12 Fastrack)
slowerT2 Ford Mustang Challenge Dark Horse R (2024-) weight increases to 3825 lbs, displacement grows to 5038cc, tire width expands to 315.
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
FA Alternate Intake Manifold for MZR
#38223 from Ove Olsson · Rule change · TB 26-01 (2026-01 Fastrack)
unclearFA MZR gains alternate Noor P/N 0088-8-00 intake manifold with AT Power runners as option to Elan or Mazda Speed Elite.
In FA, GCR section 9.1.1.2.d, modify as follows: "9. Intake manifold must be unmodified Elan DP02-60-003 or Mazda Speed equivalent Elite USF2015AT, 1.882” maximum bore diameter at throttle plates. Elan or Mazda Speed equivalent Elite intake manifold may be replaced with unmodified intake Noor P/N 0088-8-00 with intake runners AT Power P/N 13624." "10. Elan DP02-60-003 or Mazda Speed equivalent Elite USF2015AT intake manifold must use an A aluminum spacer must be used between the intake manifold and cylinder head castings; minimum spacer length is 2.200”."
fasterFA Formula 1000 motorcycle-based engine loses maximum compression ratio 14.5:1 limit.
In FA Table 2, Formula 1000 spec line, change the Engine as follows: "Motorcycle-based 4-cycle up to 1000cc, maximum compression ratio 14.5:1;. o Otherwise, current FA engine rules apply."
T2 Alternate Placement of Fuse Panel and Electronics Request
neutralT2, T3, T4 cars may relocate under-dash electronics and fuse boxes for access after roll cage installation.
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."
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"
T2 C6 LS2 Corvette Parity Request
#39472 from Brian LaCroix · Rule change · TB 26-01 (2026-01 Fastrack)
fasterT2 C6 Corvette LS2 restrictor increases from 67mm to 80mm FPR.
In T2 Spec Lines, Chevrolet Corvette C6 Coupe / Grand Sport (05-13), change Restrictor as follows: "LS2: 67mm 80mm FPR LS3: 56mm FPR"
T2 T2 Tire Sizing
#39490 from Scotty B White · Rule change · TB 26-01 (2026-01 Fastrack)
fasterT2 Dodge Viper SRT10 coupe weight reduced from 3675 lbs to 3650 lbs.
In T2 Spec Lines, Dodge Viper SRT10 incl. coupe (03-06), change Weight as follows: "3675 3650"
T2 Rear Spoiler for Mustang GT S550 (15-23)
#39499 from Andrew Aquilante · Rule change · TB 26-01 (2026-01 Fastrack)
unclearT2 Ford Mustang GT 5.0L 15-23 permits Ford Track/Performance Package aero parts M-16600-FP and M-16601-MPP.
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
T2 Clarify T4 Brake Rotor Allowance
#39503 from David Mead · Rule change · TB 26-01 (2026-01 Fastrack)
neutralT4 Performance now permits 1-piece alternative rotors matching spec line sizes; alternate brake kits allowed same.
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."
FA Change Formula 1000 allowances
#39608 from Club Racing Board · Rule change · TB 26-01 (2026-01 Fastrack)
fasterFA Formula 1000 allows carbon fiber external panels, forward-facing gaps, raises floor to 125mm, adds eight 75×125mm rub blocks, expands diffuser to 110cm with 75mm radius transitions.
In FA Table 2, Formula 1000 spec line, change the Notes as follows: "Car must comply with December 2019 GCR Formula 1000 (FB) Preparation Rules, https://www.scca.com/downloads/48184- gcr-december-2019/download, except as modified by this spec line. The prohibition of using carbon fiber in any external panels or any panels licked by the airstream in Part 3.C of the December 2019 GCR F1000 (FB) Preparation Rules is removed, with the exception that the car's floor pan/undertray must comply with the requirements of Part 2.D of the December 2019 GCR F1000 (FB) Preparation Rules. The prohibition of forward-facing gaps or openings in the bodywork in Part 3.I of the December 2019 GCR F1000 (FB) Preparation Rules is removed. Part 3.D of the December 2019 GCR F1000 (FB) Preparation Rules is modified as follows: "Between the rear of the front tire and the front of the rear tire, no point on the lower surface of the car (the surface
Show 7 more lines
licked by the air stream) shall be more than 125mm above the plane determined by the reference area designated by the entrant and on a line perpendicular to that reference plane." Part 3.D of the December 2019 GCR F1000 (FB) Preparation Rules is also modified as follows: "A maximum of eight (8) rub blocks of maximum dimension 75mm by 125mm are allowed anywhere on the lower surface of the chassis and may extend below the reference plane." Part 3.E of the December 2019 GCR F1000 (FB) Preparation Rules is modified as follows: "The radius of transitions between the diffuser sides and adjacent horizontal structures may be up to 75mm. The width of the diffuser, as measured between its sides and above any radiused transitions, may not exceed 110cm in any lateral section." The CRB may require the use of Flat Plate Intake Restrictors at any time."
T2 Request to Add 2014-2017 435i to T2
#38991 from Jimmy Cabrera · Rule change · TB 26-02 (2026-02 Fastrack)
neutralBMW 435i (2014-2017) added to T2 with 40mm restrictor, 3400 lbs minimum weight.
In T2 Spec Lines, classify as follows BMW 435I (2014-2017):
A specification table follows in the original; it is not shown here.
T2 Consideration for Nissan Z & NISMO Z to Touring 2 Class
#39296 from Greg Nelson · Rule change · TB 26-02 (2026-02 Fastrack)
neutralNissan Z including Nismo added to T2 with 38mm restrictor, 3600 lbs base and 3650 lbs Nismo.
In T2 Spec Lines, classify Nissan Z incl. Nismo as follows:
A specification table follows in the original; it is not shown here.
FA Pro Mazda Classification and Performance Enhancement Proposal
#39411 from Stephen Lamana · Rule change · TB 26-02 (2026-02 Fastrack)
fasterFA Pro Mazda: lower intake manifold now unrestricted, throttle body raised to 80mm, wing height must not exceed 99cm, bodywork width must not exceed 132cm.
In FA Table 2, Pro Formula Mazda spec line, change the notes as follows: "All current FA rules apply to areas not covered by this spec line. Apex seals unrestricted. Street port or bridge port allowed. Unmodified OEM l Lower intake manifold required unrestricted, upper intake manifold unrestricted. Balance tube not permitted. Fuel injection only. Maximum 70 80mm T throttle B body. The maximum height of the wing and/or endplates shall must not exceed 99cm (38.98 inches). The overall maximum width of the bodywork behind the front wheels shall must not exceed 132cm (51.97 inches)."
T2 Allow Alt Bushing Material in Toe Links
#39607 from David Mead · Rule change · TB 26-02 (2026-02 Fastrack)
fasterT2-T4 adjustable toe links now allow performance alternative bushings and spherical bearings, previously prohibited except in specified examples.
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
Show 4 more lines
bushings. Adjustable toe links with spherical bearings are permitted and may serve no purpose other than adjusting toe angle. Adjustable toe links are permitted. They are allowed to have performance alternative bushings and spherical bearings. They may serve no purpose other than adjusting toe angle. Spherical bearings/bushings are not permitted in T2-T4 except for the specific examples listed in the class rules or vehicle spec line."
T2 Request for Classification of MG6 TCR in T2-TCR Class
#39702 from Vito Jin · Rule change · TB 26-02 (2026-02 Fastrack)
neutralT2-TCR adds Link & Co 03 TCR and MG6 TCR, both 3000 lbs, 90% power, 275 max tire width.
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
Show 7 more lines
comply with 9.1.4.1.A.1 MG6 TCR (2019-2022) 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 comply with 9.1.4.1.A.1
What the rules allowed changed as listed; this does not say what any particular car ran.