BoP Lab / Buttonwillow Raceway Park

STU + GT2 + B-Spec at Buttonwillow Raceway Park

No mapCal Club 2024

This track has been raced on 2 configurations (The Circuit, 2.57 mi; 2.92 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): Thomas Lepper in Cal Club 2026 Grp 1 EP FP HP B-Spec Race 1 (1:42.146; the car's best in any other session was 2:12.311 and the rest of the class's best all week 2:09.353).

Pos	Car	Driver	Class	#	Lap	Theoretical	Qual	Race	5-lap stint	Consistency	Trap	S1	S2	S3
1	Chevrolet Camaro	Tim Carroll	GT2	46	1:42.698 A-Q1	1:42.698	1:42.698 A-Q1	1:44.128 A-R1	1:44.791 A-R1	+2.721 A-R1	149.0 A-P	28.597 A-Q1	29.839 A-Q1	44.262 A-Q1
2	Chevrolet Camaro	Jean Meynet	GT2	28	1:44.227 A-Q1	1:44.227	1:44.227 A-Q1	1:46.043 A-R1	1:46.393 A-R1	+1.382 A-R1	149.2 A-Q1	28.543 A-Q1	30.683 A-Q1	45.001 A-Q1
3	Ford Mustang	Brad McAllister	GT2	29	1:45.818 B-Q2	1:45.409	1:45.818 B-Q2	1:46.926 B-R1	1:47.740 B-R1	+1.198 B-R1	115.9 B-Q2	28.729 B-Q2	30.833 B-R1	45.847 B-Q2
4	Dodge Challenger	Ben Valentine	GT2	124, 24	1:46.922 A-Q1	1:46.608	1:46.922 A-Q1	1:47.171 B-R1	1:47.975 B-R1	+0.946 B-R1	132.9 A-P	29.689 B-Q1	30.929 A-Q1	45.990 B-Q2
5	Chevrolet Camaro	Sean Berardi	GT2	9	1:47.904 A-R2	1:47.266	1:50.095 A-Q2	1:47.904 A-R2	1:48.562 A-R2	+1.288 A-R2	133.2 A-R2	29.806 A-R2	31.073 A-R2	46.387 A-R2
6	Porsche GT3	Rocky Crocker	GT2	61	1:47.914 A-Q1	1:47.312	1:47.914 A-Q1	1:48.433 A-R1	1:50.149 A-R1	+3.225 A-R1	155.7 A-Q1	29.826 A-Q1	31.456 A-Q1	46.030 A-Q1
7	Chevrolet Corvette	Igor Lyustin	GT2	71	1:49.904 A-R2	1:49.689	1:50.345 A-Q1	1:49.904 A-R2	1:50.694 A-R2	+3.172 A-R2	145.8 A-Q1	30.271 A-R2	31.850 A-R2	47.568 A-R2
8	Mazda RX-3	Tony Rivera	STU	09	1:50.913 A-Q2	1:50.870	1:50.913 A-Q2	1:52.737 A-R2	1:54.126 A-R2	+2.638 A-R2	135.2 A-Q2	30.415 A-Q2	32.456 A-Q2	47.999 A-Q2
9	Mazda RX-7	Guy Laidig	GT2	52	1:51.013 A-Q2	1:50.266	1:51.013 A-Q2	1:52.486 A-R2	1:53.354 A-R2	+1.740 A-R2	138.7 A-Q1	30.134 A-P	32.225 A-P	47.907 A-Q1
10	Mazda Miata	Whitfield Gregg	STU	17	1:51.602 B-P	1:51.602	2:02.264 B-Q2	2:01.538 B-R1	2:02.222 B-R1	+1.271 B-R1	116.3 A-Q1	30.652 B-P	32.263 B-P	48.687 B-P
11	BMW M3	Wilson Powell	STU	77	1:52.380 B-P	1:52.164	1:55.401 B-Q1	1:53.843 B-R1	1:54.699 B-R1	+1.965 B-R1	102.6 B-R1	30.577 B-P	32.372 B-P	49.215 B-P
12	Honda S2000	Rylan Hazelton	STU	49	1:53.640 B-R1	1:53.140	1:55.834 B-Q1	1:53.640 B-R1	1:54.534 A-R2	+0.714 A-R2	134.8 A-R2	30.582 B-R1	32.779 B-R1	49.779 A-R2
13	BMW 330	Sean Lovett	STU	37	1:56.492 A-Q2	1:56.426	1:56.492 A-Q2	1:57.049 A-R2	1:57.605 A-R2	+1.649 A-R2	133.7 A-R2	31.816 A-Q2	33.669 A-Q1	50.941 A-Q2
14	Mazda RX-7	Scott Graham	GT2	91	1:56.607 B-R2	1:55.014	2:00.008 B-Q1	1:56.607 B-R2	1:57.173 B-R2	+2.205 B-R2	100.8 B-R2	30.931 B-R2	33.562 B-R2	50.521 B-R2
15	Porsche GT3 Cup	Robert Kelley 2+ cars	GT2	98	1:57.745 A-Q2	1:57.440	1:57.745 A-Q2	1:58.760 A-R1	1:59.706 A-R1	+1.876 A-R1	125.1 A-R1	32.864 A-R1	33.998 A-Q2	50.578 A-Q2
16	Dodge VIPER	Robert Kelley 2+ cars	GT2	88	1:57.753 B-P	1:57.501	2:00.453 B-Q2	1:59.538 B-R2	2:02.474 B-R2	+3.373 B-R2	92.9 B-Q1	31.983 B-P	33.965 B-P	51.553 B-P
17	Nissan 300ZX	James Slechta	STU	75	1:59.183 A-Q2	1:59.183	1:59.183 A-Q2	2:00.458 A-R2	2:01.009 A-R2	+0.921 A-R2	132.0 A-Q1	32.882 A-Q2	34.528 A-Q2	51.773 A-Q2
18	Mazda MX-5	Oscar Jackson	STU	161	1:59.707 B-R2	1:58.888		1:59.707 B-R2	1:59.952 B-R2	+1.112 B-R2	103.9 B-R2	32.339 B-R2	34.219 B-R2	52.330 B-R2
19	Mazda RX-7	Michael Lewis	STU	32	2:00.248 A-R1	2:00.179		2:00.248 A-R1	2:02.190 A-R2	+1.431 A-R2	130.4 A-R1	32.729 A-R1	34.570 A-R1	52.880 A-R1
20	Mazda RX-7	Wayne Graham >115%	GT2	96	2:00.512 B-R1	1:59.533	2:01.239 B-Q1	2:00.512 B-R1	2:01.174 B-R1	+1.175 B-R1	100.1 B-R1	32.073 B-R1	34.881 B-R1	52.579 B-R1
21	Mazda MX-5	Dale Shoemaker	STU	52	2:01.642 B-R2	2:01.176	2:04.115 B-Q1	2:01.642 B-R2	2:02.793 B-R2	+2.442 B-R2	125.9 A-Q2	32.956 B-R2	34.983 B-R2	53.237 B-R2
22	Mini Cooper	Trenton Kramer	B-Spec	10	2:09.353 A-Q2	2:09.139	2:09.353 A-Q2	2:09.916 A-R2	2:10.556 A-R2	+1.494 A-R2	121.5 A-R2	34.887 A-Q2	37.301 A-R2	56.951 A-Q2
23	Mini Cooper	Thomas Lepper	B-Spec	21	2:10.054 B-R2	2:09.895	2:10.736 B-Q1	2:10.054 B-R2	2:11.091 B-R2	+1.353 B-R2	117.3 A-R2	34.984 B-R2	37.433 B-Q1	57.478 B-R2
24	Mazda 2	Ali Naimi	B-Spec	14	2:10.149 B-R2	2:09.333	2:11.287 B-Q2	2:10.149 B-R2	2:10.973 B-R2	+1.174 B-R2	117.2 A-Q1, A-R2	34.986 B-R2	37.336 B-R2	57.011 B-R2
25	Toyota Yaris	Joseph Gersch	B-Spec	38	2:10.513 B-Q2	2:09.990	2:10.513 B-Q2	2:10.749 B-R2	2:11.238 B-R2	+0.616 B-R2	118.3 A-R2	35.332 B-Q2	37.456 B-Q2	57.202 B-R2
26	Mazda 2	Tim Linerud	B-Spec	95	2:12.574 A-R2	2:11.871	2:15.496 A-Q2	2:12.574 A-R2	2:13.019 A-R2	+0.902 A-R2	113.0 A-R2	35.895 A-R2	37.881 A-R2	58.095 A-R2
27	Mazda 2	Wendy Epstein Annis	B-Spec	121	2:17.323 B-Q1	2:16.493	2:17.323 B-Q1	2:17.406 B-R2	2:18.609 B-R2	+2.962 B-R2	88.7 B-Q1, B-R2	36.448 B-Q1	39.291 B-Q1	1:00.754 B-Q1

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
Chevrolet Camaro	GT2	3	1:42.698Tim Carroll	1:42.698Tim Carroll	1:44.128Tim Carroll	149.2Jean Meynet	28.543Jean Meynet	29.839Tim Carroll	44.262Tim Carroll
Ford Mustang	GT2	1	1:45.818Brad McAllister	1:45.818Brad McAllister	1:46.926Brad McAllister	115.9Brad McAllister	28.729Brad McAllister	30.833Brad McAllister	45.847Brad McAllister
Dodge Challenger	GT2	1	1:46.922Ben Valentine	1:46.922Ben Valentine	1:47.171Ben Valentine	132.9Ben Valentine	29.689Ben Valentine	30.929Ben Valentine	45.990Ben Valentine
Porsche GT3	GT2	2	1:47.914Rocky Crocker	1:47.914Rocky Crocker	1:48.433Rocky Crocker	155.7Rocky Crocker	29.826Rocky Crocker	31.456Rocky Crocker	46.030Rocky Crocker
Porsche GT3	GT2	1	1:47.914Rocky Crocker	1:47.914Rocky Crocker	1:48.433Rocky Crocker	155.7Rocky Crocker	29.826Rocky Crocker	31.456Rocky Crocker	46.030Rocky Crocker
Porsche GT3 Cup	GT2	1	1:57.745Robert Kelley	1:57.745Robert Kelley	1:58.760Robert Kelley	125.1Robert Kelley	32.864Robert Kelley	33.998Robert Kelley	50.578Robert Kelley
Chevrolet Corvette	GT2	1	1:49.904Igor Lyustin	1:50.345Igor Lyustin	1:49.904Igor Lyustin	145.8Igor Lyustin	30.271Igor Lyustin	31.850Igor Lyustin	47.568Igor Lyustin
Mazda RX-3	STU	1	1:50.913Tony Rivera	1:50.913Tony Rivera	1:52.737Tony Rivera	135.2Tony Rivera	30.415Tony Rivera	32.456Tony Rivera	47.999Tony Rivera
Mazda RX-7	GT2/STU	4	1:51.013Guy Laidig	1:51.013Guy Laidig	1:52.486Guy Laidig	138.7Guy Laidig	30.134Guy Laidig	32.225Guy Laidig	47.907Guy Laidig
Mazda Miata	STU	1	1:51.602Whitfield Gregg	2:02.264Whitfield Gregg	2:01.538Whitfield Gregg	116.3Whitfield Gregg	30.652Whitfield Gregg	32.263Whitfield Gregg	48.687Whitfield Gregg
BMW M3	STU	1	1:52.380Wilson Powell	1:55.401Wilson Powell	1:53.843Wilson Powell	102.6Wilson Powell	30.577Wilson Powell	32.372Wilson Powell	49.215Wilson Powell
Honda S2000	STU	1	1:53.640Rylan Hazelton	1:55.834Rylan Hazelton	1:53.640Rylan Hazelton	134.8Rylan Hazelton	30.582Rylan Hazelton	32.779Rylan Hazelton	49.779Rylan Hazelton
BMW 330	STU	1	1:56.492Sean Lovett	1:56.492Sean Lovett	1:57.049Sean Lovett	133.7Sean Lovett	31.816Sean Lovett	33.669Sean Lovett	50.941Sean Lovett
Dodge VIPER	GT2	1	1:57.753Robert Kelley	2:00.453Robert Kelley	1:59.538Robert Kelley	92.9Robert Kelley	31.983Robert Kelley	33.965Robert Kelley	51.553Robert Kelley
Nissan 300ZX	STU	1	1:59.183James Slechta	1:59.183James Slechta	2:00.458James Slechta	132.0James Slechta	32.882James Slechta	34.528James Slechta	51.773James Slechta
Mazda MX-5	STU	2	1:59.707Oscar Jackson	2:04.115Dale Shoemaker	1:59.707Oscar Jackson	125.9Dale Shoemaker	32.339Oscar Jackson	34.219Oscar Jackson	52.330Oscar Jackson
Mini Cooper	B-Spec	2	2:09.353Trenton Kramer	2:09.353Trenton Kramer	2:09.916Trenton Kramer	121.5Trenton Kramer	34.887Trenton Kramer	37.301Trenton Kramer	56.951Trenton Kramer
Mazda 2	B-Spec	3	2:10.149Ali Naimi	2:11.287Ali Naimi	2:10.149Ali Naimi	117.2Ali Naimi	34.986Ali Naimi	37.336Ali Naimi	57.011Ali Naimi
Toyota Yaris	B-Spec	1	2:10.513Joseph Gersch	2:10.513Joseph Gersch	2:10.749Joseph Gersch	118.3Joseph Gersch	35.332Joseph Gersch	37.456Joseph Gersch	57.202Joseph Gersch

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 2024 → Cal Club 2025 2024-02-23 to 2025-02-22

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

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

neutralChevrolet Corvette C8 (2020–) classified into GT2-ST with 6162cc displacement, 3300 lbs minimum weight, 71mm restrictor.

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)

fasterB-Spec Honda Fit 07-08 loses 125 lbs to 2400; Versa S 2020+ loses 150 lbs to 2550; Yaris iA 16-20 loses 250 lbs to 2450.

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

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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, Nissan Versa S (2020-), change as follows:
Min weight: "~~2700~~ 2550"
Add to Notes: "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, Toyota/Scion IA Sedan (16-20), change as follows:
Min weight: ~~2700~~ 2450"
Add to Notes: "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."

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

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

neutral2015 Mitjet ST added to GT2, must run per VTS specifications with complete FIA form CdM008.

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

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complete car Specifications (FIA form
CdM008) at every entered race event.

2024-03-01 STU Letter #35397 addendum

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

neutralSTU Mini Cooper S SC: alternate LEAP OMICRON hood scoop LEP-OMICRON3 permitted.

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

2024-03-01 STU S54 Drysump

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

neutralSTU BMW S54 B32 OEM now permits dry sump oiling system.

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

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)

neutralB-Spec Honda Fit 07-08 rear sway bar part number changed to Progress #62.1060.

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."

2024-04-01 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)

fasterB-Spec Honda Fit MT 2015-19 restrictor increases 30mm to 31mm, weight rises 2525 to 2550 lbs.

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)

fasterB-Spec and C-Spec now permit wheels of any offset if tire doesn't protrude beyond fender; spacers allowed with differing left-right offsets per axle.

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

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Wheel/rim weight shall be 17 lbs. ~~All wheels shall be one-piece metal castings or metal two piece welded. All four wheels must~~
~~be the same dimensional offset. Aftermarket wheel studs and/or wheel bolts are allowed. Wheel bolts may be replaced with~~
~~studs and nuts. Wheel spacers are allowed, the same thickness spacer must be used on all four corners.~~ "

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)

neutralB-Spec Mini Cooper Countryman R60, Paceman R61, and Nissan Versa 1797cc spec lines expire 1/1/2025 unless appealed by 12/1/2024.

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)

slowerGT2-ST Acura NSX minimum weight raised to 3000 lbs, restrictor increased to 45mm TIR.

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)

neutralB-Spec model descriptions standardized: trim levels and door count designations removed or replaced with body style wording.

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)"

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"Honda Fit ~~Automatic~~ AT (07-08)"
"Honda Fit MT (09-14)"
"Hyundai Accent GS Hatchback (12-19)"
"Kia Rio ~~5-door/LX~~ Hatchback (12-19)"
"Nissan Versa S (2020-)"
"Toyota Yaris Hatchback (07-11)"
"Toyota Yaris Hatchback (12-18)"

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)

fasterGT2-ST Corvette 14-19 LS2 restrictor increases from 78mm to 80mm flat plate.

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

2024-05-01 B-Spec Wheel Rules

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

neutralB-Spec and C-Spec wheels must be same thickness spacers all four corners; wording clarified on offset and protrusion rules.

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

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Wheel/rim weight shall be 13 lbs.
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.
~~Wheels are permitted any offset provided the tire tread (that portion of the tire that contacts the ground) does not protrude~~
~~beyond the fender opening when viewed from the top perpendicular to the ground.~~"

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)

neutralB-Spec and C-Spec Chevrolet Sonic Bilstein B14 kit #47-171725 verified compatible, suspension wording clarified.

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

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B14 kit #47-171725 verified compatible."

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)

neutralB-Spec Mazda2 and multiple Mini Cooper models eliminate redundant sway bar end link part number notes.

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): "F~~ront 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): "F~~ront 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): "F~~ront 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.~~"

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Mini Cooper (R56) AT (07-10): "F~~ront 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 Clubman (R55) (07 - 10): "F~~ront 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 (R56LCI) MT (11-13): "F~~ront 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 (R56LCI) AT (11-13): "F~~ront 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 Countryman (R60) (11-16): "F~~ront 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 Paceman (R61) (11-16): "F~~ront 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 Clubman (R55) (11-15): "F~~ront 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 Coupe (R58) (12-15): "F~~ront 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)

neutralB-Spec Fiat 500 spec line changes from model year 2012–15 to 2012–17.

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

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)

slowerB-Spec Honda Fit 15-19 CVT weight increases to 2550 lbs, restrictor to 31mm.

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

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)

neutralB-Spec Honda Fit MT & CVT 15-19: cleaned up allowed parts notes, CVT gains Setrab transmission cooler option.

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:

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"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. ~~CVT cars only~~ Allow Setrab 50-119-7612 transmission cooler in addition to OEM."

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)

neutralB-Spec Nissan Versa (09-11) spec line expires 1/1/2025 unless appeal filed by 12/1/2024.

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)

neutralB-Spec deletes redundant rule 25 in GCR Section 9.1.10.E.

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)

neutralGT2-ST allows aftermarket replacement differential housings if exact equivalents.

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)

neutralB-Spec Hyundai Accent rear brakes corrected to 10.3 disc; Kia Rio rear brakes corrected to 10.3 disc.

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)

neutralGT4 cars now permitted in GT2-ST with factory restrictor, must comply with 2012 STO rules, slicks allowed with 100-pound penalty.

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)

neutralB-Spec and C-Spec restricted to Goodyear Eagle RS/RS-R P205/50R15 and 225/45R17 tires respectively; Hankook tires removed; wet/dry mixing prohibited.

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.

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~~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.~~"

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

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

fasterB-Spec Sonic restrictors increased to 5-6mm, Fit weight cut 50-25 lbs, Mini Cooper weight reduced 45 lbs, various restrictor adjustments.

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."

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Honda Fit AT (09-14)
Weight: "~~2525~~ 2500"
Notes: "Any Cold Air Intake Package allowed (any manufacturer) ~~with a 25lb adder~~."
Honda Fit CVT (15-19)
Notes: "31 3mm"
Mini Cooper Hatchback (R50) CVT (02-06)
Weight (lbs): "~~2545~~ 2500"
Mini Cooper (R56) AT (07-10)
Notes: "44 6mm (OE Catalyst) or 40 2mm (Header)"
Mini Cooper (R56LCI) AT (11-13)
Notes: "43 5mm (OE Catalyst) or 41mm (Header)"

2024-08-01 B-Spec Require hood pins

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

neutralB-Spec and C-Spec hood pins change from optional to recommended; factory release cable may be removed if pins used.

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)

neutralB-Spec and C-Spec Chevrolet Sonic and Cruze allow Babyface Fabrication brake caliper pistons.

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."

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In C-Spec Spec Lines, change Chevrolet Cruze (2010-16), add to Notes the following:
"Allow Babyface Fabrication brake caliper piston CRZ-SS."

2024-08-01 STU RWD Turbo Disadvantage

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

fasterSTU RWD turbo cars no longer required to reduce restrictor by 1 mm from table.

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

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

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

unclearB-Spec Toyota/Scion IA Sedan 16-20 allows ST Suspension Kit 13275022, requires three Super Tour weekends and OBD-II data submission.

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 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)

fasterHonda Fit AT 07-08 B-Spec and C-Spec: rear sway bar Progress #62.1060 and any cold air intake package now allowed.

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."

2024-11-01 STU R53 15% Pulley Request

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

slowerSTU Mini Cooper S SC 1900 restricts to 2.565 diameter pulley; 2100 allows 2.285 diameter pulley.

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

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

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

neutralSTL/STU: 90-05 Mazda Miata alternate front wheel hubs moved from General to specific part approval.

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

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

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

slowerSTU BMW N54/N55 turbo inlet restrictors now required per GCR definition; turbo swapping prohibited.

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

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)

unclearB-Spec and C-Spec cars replace wheelbase spec with induction restrictor (mm) values, effective 2025-01-01.

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~~"

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Ford Fiesta Hatchback (11-19): "~~2470~~ 39"
Ford Fiesta Sedan (11-19): "~~2470~~ 38"
Honda Fit MT (07-08): "~~2450~~"
Honda Fit AT (07-08): "~~2450~~"
Honda Fit MT (09-14): "~~2500~~"
Honda Fit AT (09-14): "~~2500~~"
Honda Fit MT (15-19): "~~2530~~ 31"
Honda Fit CVT (15-19): "~~2530~~ 33"
Hyundai Accent Hatchback (12-19): "~~2570~~ 41"
Kia Rio Hatchback (12-19): "~~2570~~ 41"
Mazda2 (10-14): "~~2490~~"
Mini Cooper Hatchback (R50) MT (02-06): "~~2466~~"
Mini Cooper Hatchback (R50) CVT (02-06): "~~2466~~"
Mini Cooper (R56) MT (07-10): "~~2466~~ 44 (OE Catalyst) 40 (Header)"
Mini Cooper (R56) AT (07-10): "~~2466~~ 46 (OE Catalyst 42 (Header)"
Mini Cooper Clubman (R55) (07-10): "~~2547~~ 44 (OE Catalyst) 40 (Header)"
Mini Cooper (R56LCI) MT (11-13): "~~2466~~ 43"
Mini Cooper (R56LCI) AT (11-13): "~~2466~~ 43"
Mini Cooper Clubman (R55) (11-15): "~~2547~~ 42"
Mini Cooper Coupe (R58) (12-15): "~~2466~~ 42"
Nissan Micra Cup Cars (Canadian): ~~"2450~~"
Nissan Versa Sedan (2012-2019): ~~"2600~~"
Nissan Versa Hatchback (2012-2019): ~~"2600~~"
Nissan Versa (2020-): "~~2618~~ 38"
Toyota/Scion IA Sedan (16-20): "~~2570~~ 38"
Toyota Yaris Hatchback (07-11): "~~2461~~ 42"
Toyota Yaris Hatchback (12-18): "~~2510~~ 42"
Toyota Yaris Sedan (07-12): "~~2550~~ 41"

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

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

fasterSTU Audi 1.8T wagon deleted; Porsche 944 1800 weight to Chart, turbo inlet restrictor removed.

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

2025-01-01 GT2 Panoz Esperante GTS BOP

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

neutralGT2 Panoz Esperante GTS adds 2013-2016 Ford EcoBoost Twin Turbo V-6 3496cc engine, 2600 lbs.

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.

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(CC)
Head Type Valves /

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)

neutralB-Spec Hyundai Accent and Kia Rio approve Bilstein B8 shock 33-187112 for rear suspension use.

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 GT2 Correct language regarding OEM Areo Devices

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

neutralTA2 rear wing height rule clarified: OEM aerodynamic devices exempt from peak-of-roof requirement.

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)

neutralGT2 Sunbeam Tiger gains Holly 650 cfm carburetor alternate options PN #80541-1 and #80541-2.

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 STU Merger GT3 to STU

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

neutralSTU-GT3 reclassified as STU-GT3U effective January 1, 2026.

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

2025-01-01 STU GT3 TCR Tire allowance

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

slowerSTU GT3 TCR gains 275-width tire option with 100 lb weight penalty, but not in A compound.

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

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

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

fasterGT2 STO aftermarket ABS weight penalty reduced from 100 lbs to 50 lbs.

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)

neutralB-Spec Honda Fit AT, Fit CVT, Mazda2, Mini Cooper R50 MT and CVT, Toyota Yaris remove redundant notes language.

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~~

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~~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 CVT (15-19), change Notes as follows:
"Allow damper FR LH 51605F23SA81, Damper FR RH FR RH 51606F23SA81, Damper RR 52610F23SA80, Spring adjust assy RR
52691F23SA80, Camber Adjuster Comp, Damper 51920F23SA82. E~~xhaust pipe assy 18300F23SA81, ACG belt (6PK858)~~
~~31110FC4YA80~~. Allow rear sway bar Progress 62.1063. Allow Setrab 50- 119-7612 transmission cooler in addition to OEM."
In B-Spec Spec Lines, Mazda2 (10-14), change Notes as follows:
"~~Helper springs F&R 0000-04-9926, Spring spacer F&R 0000-04-9925,~~ 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. 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-56-321."
In B-Spec Spec Lines, Mini Cooper Hatchback (R50) MT (02-06), change Notes as follows:
"~~Allow KW: Coilover Kit: Variant 2: Gen 1 or KW equivalent, Vorshlag Mini R50/53 Camber Plates & Perches allowed.~~ Ride height
measured from the metal underneath the bottom of the plastic door rocker molding shall be no less than 5 inches. Allow rear
sway bar Progress #62.0210."
In B-Spec Spec Lines, Mini Cooper Hatchback (R50) CVT (02-06), change Notes as follows:
"~~Allow KW: Coilover Kit: Variant 2: Gen 1 or KW equivalent, Vorshlag Mini R50/53 Camber Plates & Perches allowed.~~ Ride height
measured from the metal underneath the bottom of the plastic door rocker molding shall be no less than 5 inches. Allow rear
sway bar Progress #62.0210.CVT equipped cars allow Setrab 50-119-7612 transmission cooler in addition to OEM."
In B-Spec Spec Lines, Toyota Yaris Hatchback (07-11), change Notes as follows:
"~~PTR04-52061 TRD Sport shocks permitted. PTR11-52070 TRD spring kit permitted.~~ Speed sensor may be disconnected. Cold air
intake K&N 69-8612TFK is allowed. Rear Swaybar PTR11-52071 is allowed~~. Any Camber plate is permitted.~~"

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)

neutralB-Spec removes Mini Cooper Countryman R60, Cooper Paceman R61, and two Nissan Versa generations effective 2/1/25.

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)

neutralB-Spec Nissan Micra Cup Car spec line expires 7/1/25 unless appeal submitted by 6/30/25.

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."

Cal Club 2025 → Cal Club 2026 2025-02-22 to 2026-02-21

2025-03-01 GT2 Hood Bulge allowed

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

unclearGT2 Pontiac Fiero changes from FWD to RWD; hood bulge permitted for front engine relocation.

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 STU BMW N54/N55 Engine Allowance Follow Up

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

neutralSTU BMW N54/N55 3.0L classified at Chart +3% minimum weight; N54 twin turbo not allowed.

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

2025-03-01 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)

neutralB-Spec Toyota Yaris Hatchback 12-18 rear brakes now allow 10.2 inch disc alternative to 7.9 drum.

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)

neutralB-Spec Toyota Yaris Hatchback and Sedan may now disconnect speed sensor.

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)

slowerTA2 and STO OEM wings no longer exempt from rear wing height rule at roof peak.

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 B-Spec Set Expiration Date For Fiat 500

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

neutralB-Spec Fiat 500 (12-17) spec line expires 1/1/26 unless appeal filed.

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."

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

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

fasterSTU Mini Cooper S SC supercharger pulley diameter reduced from 2.285 to 2.185.

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

2025-03-01 STU Question About a Weight Modifier

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

fasterSTU Honda K20C1 Turbo I4 exempted from 3% DI weight adder in Spec Lines Table A.

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

2025-03-01 STU Increase Minimum Weight

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

slowerSTU GT3U minimum weight increases 150 to 250 pounds.

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

2025-04-01 B-Spec 2025 BOP Recommendations

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

fasterB-Spec Honda Fit MT intake now limited to three models with 25lb adder; Mazda2 exhaust headers allowed with up to 50lb adder; Mini Coopers FPR increased 1-2 points; Nissan Versa sedans 40lbs lighter, Yaris models 50lbs lighter.

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)"

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Mini Cooper (R56LCI) MT (11-13): "43 4 FPR"
Mini Cooper (R56LCI) AT (11-13): "45 6 FPR (OE Catalyst)"
Mini Cooper Clubman (R55) (11-15): "42 4 FPR"
Nissan Versa Sedan (12-19): "~~2490~~ 2450" "Allow Injen intake SP1906"
Nissan Versa Hatchback (12-19): "~~2490~~ 2450" "Allow Injen intake SP1906"
Toyota Yaris Hatchback (12-18): "~~2400~~ 2350"
Toyota Yaris Sedan (07-12): "~~2400~~ 2350"

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)

neutralB-Spec Hyundai Accent and Toyota Yaris weight adjustments: ±25 lbs based on rear brake type.

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 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)

neutralB-Spec Hyundai Accent and Kia Rio (12-19) allow Bilstein B14 kit #47167490 front shocks and BabyFace Fabrication sump extension #BF-HYU-PAN.

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."

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

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

neutralB-Spec Hyundai Accent Hatchback and Kia Rio Hatchback model year ranges corrected.

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)

slowerB-Spec 07-08 Honda Fit MT minimum weight increases 50 lbs, to 2450.

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)

neutralHonda Fit 07-08 MT and AT approved for Bilstein B14 kit 47172401 in B-Spec.

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."

2025-05-01 STU Wheel Size Inconsistency

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

neutralSTU wheel width rules clarified: cars ≤2,850 lbs max 8 inches, cars >2,850 lbs max 9 inches.

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

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

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

fasterSTU Spec Line GT3U minimum weight reduced from plus 250 to plus 225 pounds; wheel and tire options clarified with weight adjustments.

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

Show 1 more lines

including the 225 lbs."

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)

neutralB-Spec adds Hyundai Accent Sedan (12-17) and Kia Rio Sedan (12-17), both 1591cc, 2525 lbs, 40mm FPR restrictor.

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)

neutralB-Spec Honda Fit MT 09-14 allows Acuity Shifter Base Bushing Kit 1954.

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 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)

neutralB-Spec Honda Fit AT 09-14 adds Weapon R Intake 301-166-301 to approved parts.

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)

neutralB-Spec and C-Spec shift linkage/cables no longer prohibited from any modification; approved aftermarket bushings now permitted.

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 STU 2.8-3.2L N/A Engine Allowances

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

unclearSTU 2.8-3.2L N/A engines now allow 245 max tire width; over 3150 lbs may run 275 with 2% weight penalty.

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

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

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

neutralSTU Mazda MZR may use Goodwin 61-2510 or Gato Performance 31972 intake manifold.

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

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

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

neutralSTU Honda JDM H23a added, 2259cc displacement, minimum weight per Chart, must meet ST engine regulations.

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

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

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

neutralB-Spec Honda Fit MT 09-14 two pedal shutdown may be disabled by cutting/de-pinning pin 42 BKSW at main ECU connector.

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)

neutralGT2 Porsche 911 Coupe & Targa may use 993 3.8 RSR rear deck lid or approved aftermarket reproductions.

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)

slowerB-Spec Honda Fit MT 07-08 intake restricted to Injen SP1511 only, from any Cold Air Intake Package.

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. A~~ny 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."

2025-08-01 STU STU-TCR Adjustments

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

slowerSTU-TCR tire width increases to 275 with weight adder raised from 100 to 150 pounds.

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

2025-08-01 STU Lotus Weight Reduction

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

fasterSTL/STU Lotus weight reduced: Evora GT4 to 2700 lbs, Elise Cup R to 2250 lbs, Elise/Exige SC to 2450-2550 lbs.

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

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

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

neutralB-Spec and C-Spec: asterisk removed from public road usage note in rule 9.1.10.D.9.

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."

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

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

fasterSTU Lotus Elise SC and Exige SC weight reduced from 2450 to 2250 lbs.

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

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)

neutralB-Spec Honda Fit MT 07-08 allows Torque Solution Shifter Cable Bushing kit TS-SCB-506.

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

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

slowerSTU Honda K24 engine swap weight increases by 2% effective November 1, 2025.

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

2025-11-01 B-Spec Fiesta BOP Adjustment

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

slowerB-Spec Ford Fiesta Hatchback and Sedan gain 55 lbs to 2525; restrictors increase 1 mm.

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 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)

unclearB-Spec Hyundai Accent and Kia Rio remove Bilstein B8 shock 33-187112 rear suspension approval.

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 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)

fasterB-Spec Honda Fit MT (07-08) becomes Runoffs-eligible; previous three-weekend Super Tour requirement removed.

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."

2025-12-01 STU Turbo Inlet Restrictor Table

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

slowerSTU 36mm restrictor allows 2830 lbs (up 10 lbs from 2820); 37mm allows 2980 lbs (down 5 lbs from 2985).

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

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

2025-12-01 STU 275 Tire Rule

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

slowerSTU cars over 3150 lbs lose 275-tire option with 2% weight adder.

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

2025-12-01 STU STU Honda Engine weight penalty

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

fasterSTU Honda K20 and K24 engines lose 2% minimum weight penalty.

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

2026-01-01 B-Spec Notes section cleanup

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

neutralB-Spec Chevrolet Sonic and Ford Fiesta, Honda Fit notes reorganized from individual allowances to approved parts lists; wording cleanup.

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~~

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~~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, Setrab transmission cooler 50-119-7612. Bilstein B14 kit 47-171725
verified compatible. This configuration is not currently eligible for Runoffs competition. This car must compete in three separate
Majors/Super Tour events so performance data can be collected. In addition to an SCCA data box, OBDII data collected via an
AIM or similar device must be submitted."
In B-Spec Spec Lines, Chevrolet Sonic Hatchback 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. World Challenge suspension kit permitted but no longer available. Bilstein B14 kit 47-171725 verified compatible."
In B-Spec Spec Lines, Chevrolet Sonic Hatchback 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~~
~~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, Setrab transmission cooler 50-119-7612. Bilstein B14 kit #47-171725
verified compatible. This configuration is not currently eligible for Runoffs competition. This car must compete in three separate
Majors/Super Tour events so performance data can be collected. In addition to an SCCA data box, OBDII data collected via an
AIM or similar device must be submitted."
In B-Spec Lines, Ford Fiesta Hatchback (11-19), change Notes as follows:
"~~Suspension kit #M-FR3-FAEB allowed. Rear axle bushing #000-04-2203-RR allowed. Allow rear torque bar Corksport #Mz2-3-~~
~~070. Cold air intake K&N 69-3530TS is allowed. Powerflex PFR19-1511BX2 rear suspension bushing allowed. Eibach rear sway bar~~
~~#35143.312 o r35143.320 is allowed. Mazda front hub D651-33-06 and rear hub D651-26-15XE allowed.~~ Approved parts: Eibach
rear sway bar 35143.312, Corksport rear torque bar MZ2-3-070, K&N intake 69-3530TS, Powerflex rear suspension bushing
PFR19-1511BX2, Mazda front hub D651-33-06, Mazda rear hub D651-26-15XE."
In B-Spec Spec Lines, Ford Fiesta Sedan (11-19), change Notes as follows:
"~~Suspension kit #M-FR3-FAEB allowed. Rear axle bushing #000-04-2203-RR allowed. Allow rear torque bar Corksport #Mz2-3-~~
~~070. Cold air intake K&N 69-3530TS is allowed. Powerflex PFR19-1511BX2 rear suspension bushing allowed. Eibach rear sway bar~~
~~#35143.312 o r35143.320 is allowed. Mazda front hub D651-33-06 and rear hub D651-26-15XE allowed.~~ Approved parts: Eibach
rear sway bar 35143.312, Corksport rear torque bar MZ2-3-070, K&N intake 69-3530TS, Powerflex rear suspension bushing
PFR19-1511BX2, Mazda front hub D651-33-06, Mazda rear hub D651-26-15XE."
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. Allow Torque Solution Shifter Cable Bushing kit TS-SCB-506.~~ Approved
parts: Progress rear sway bar 62.1060, Injen intake SP1511, Torque Solution shifter cable bushings TS-SCB-506. Bilstein B14 kit
47172401 verified compatible. OEM exhaust manifold required. Primary catalyst may be removed."
In B-Spec Spec Lines, Honda Fit AT (07-08), change Notes as follows:
"~~Bilstein B14 kit 47172401 verified compatible. Any aftermarket header allowed. Allow rear sway bar Progress # 62.1060. Any~~
~~Cold Air Intake Package allowed (any manufacturer).~~ Approved parts: Progress rear sway bar 62.1060, Injen intake SP1511,
Setrab transmission cooler 50-119-7612, any aftermarket header. Bilstein B14 kit 47172401 verified compatible."
In B-Spec Spec Lines, Honda Fit MT (09-14), 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~~
~~# 62.1061 Allow Injen Intake SP1512, K&N Intake 69-1017TTK, or HPS intake 827-102 with a 25lb adder. Allow Acuity Shifter~~
~~Base Bushing Kit 1954 Two pedal shutdown may be disabled by cutting/de-pinning pin 42 (BKSW) at the main ECU connector in~~
~~the engine bay.~~ Approved parts: Progress rear sway bar #62.1061, Injen Intake SP1512, K&N Intake 69-1017TTK, or Weapon R
Intake 301-166-301, Acuity shifter bushing kit 1954. World Challenge suspension kit permitted but no longer available. Two pedal
shutdown may be disabled by cutting/de-pinning pin 42 (BKSW) at the main ECU connector in the engine bay."
In B-Spec Spec Lines, Honda Fit AT (09-14), 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~~
~~# 62.1061. Allow Setrab 50-119-7612 transmission cooler in addition to OEM. Any aftermarket exhaust/header allowed. Any~~
~~Cold Air Intake Package allowed (any manufacturer). Weapon R Intake 301-166-301.~~ Approved parts: Progress rear sway bar
62.1061, Injen Intake SP1512, any aftermarket header, Setrab transmission cooler 50-119-7612. Two pedal shutdown may be
disabled by cutting/de-pinning pin 42 (BKSW) at the main ECU connector in the engine bay."
In B-Spec Spec Lines, Honda Fit MT (15-19), change Notes as follows:
"~~Allow damper FR LH 51605F23SA81, Damper FR RH FR RH 51606F23SA81, Damper RR 52610F23SA80, Spring adjust assy RR~~
~~52691F23SA80, Camber Adjuster Comp, Damper 51920F23SA82. Allow rear sway bar Progress 62.1063.~~ Approved parts: Progress
rear sway bar 62.1063."
In B-Spec Spec Lines, Honda Fit CVT (15-19), change Notes as follows:
"~~Allow damper FR LH 51605F23SA81, Damper FR RH FR RH 51606F23SA81, Damper RR 52610F23SA80, Spring adjust assy RR~~
~~52691F23SA80, Camber Adjuster Comp, Damper 51920F23SA82. Allow rear sway bar Progress 62.1063. Allow Setrab 50-119-~~
~~7612 transmission cooler in addition to OEM.~~ Approved parts: Progress rear sway bar 62.1063, Setrab transmission cooler 50-
119-7612. This configuration is not currently eligible for Runoffs competition. This car must compete in three separate
Majors/Super Tour events so performance data can be collected. In addition to an SCCA data box, OBDII data collected via an
AIM or similar device must be submitted."
In B-Spec Spec Lines, Hyundai Accent Hatchback (12-17), change Notes as follows:
"~~Allow AKSJ03-10-001 Damper Frt Assembly; AKSJ03-20-001 Damper-ASTRear; KSJ03-20-003 Rear Upper Spring Perch Delrin;~~
~~AKSJ03-60-001 Sump Pan Extension. Allow rear torque bar Evilla Motorsports #KR-B1. Bilstein B8 shock 33- 187112 approved for~~
~~use in rear suspension. Bilstein B14 kit #47167490 front shocks verified compatible. Allow BabyFace Fabrication sump extension~~
~~#BF-HYU-PAN Vehicles equipped with rear drum brakes subtract 25 lb.~~ Approved parts: Evilla Motorsports rear torque bar KR-B1,
BabyFace Fabrication sump extension BF-HYU-PAN. Vehicles equipped with rear drum brakes subtract 25 lbs."
In B-Spec Spec Lines, Hyundai Accent Sedan (12-17), change Notes as follows:
"~~Allow AKSJ03-10-001 Damper Frt Assembly; AKSJ03-20-001 Damper-AST-Rear; KSJ03-20- 003 Rear Upper Spring Perch Delrin;~~
~~AKSJ03-60-001 Sump Pan Extension. Allow rear torque bar Evilla Motorsports #KR-B1. Bilstein B8 shock 33-187112 approved for~~
~~use in rear suspension.~~ Approved parts: Evilla Motorsports rear torque bar KR-B1, BabyFace Fabrication sump extension BF-HYU-
PAN. Vehicles equipped with rear drum brakes subtract 25 lbs."
In B-Spec Spec Lines, Kia Rio Hatchback (12-15), change Notes as follows:
"~~Allow AKSJ03-10-001 Damper Frt Assembly; AKSJ03-20-001 Damper-AST-Rear; KSJ03-20- 003 Rear Upper Spring Perch Delrin;~~
~~AKSJ03-60-001 Sump Pan Extension. Allow rear torque bar Evilla Motorsports #KR-B1. Bilstein B14 kit #47167490 front shocks~~
~~verified compatible. Allow BabyFace Fabrication sump extension #BF-HYU-PAN Bilstein B8 shock 33-187112 approved for use in~~
~~rear suspension.~~ Approved parts: Evilla Motorsports rear torque bar KR-B1, BabyFace Fabrication sump extension BF-HYU-PAN.
World Challenge suspension kit permitted but no longer available."
In B-Spec Spec Lines, Kia Rio Sedan (12-17), change Notes as follows:
"~~Allow AKSJ03-10-001 Damper Frt Assembly; AKSJ03-20-001 Damper-AST-Rear; KSJ03-20- 003 Rear Upper Spring Perch Delrin;~~
~~AKSJ03-60-001 Sump Pan Extension. Allow rear torque bar Evilla Motorsports #KR-B1. Bilstein B8 shock 33-187112 approved for~~
~~use in rear suspension.~~ Approved parts: Evilla Motorsports rear torque bar #KR-B1, BabyFace Fabrication sump extension BF-HYU-
PAN."
In B-Spec Spec Lines, Mazda2 (10-14), change Notes as follows:
"~~Rear sway bar 0000-04-2203-RR or 0000-04-2312, 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. 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. 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-56-321.~~ Approved parts: Mazda Motorsports rear sway bar 0000-04-2203-RR, Eibach/Mazda
Motorsports rear sway bar 35143.312/0000-04-2312, Corksport rear torque bar #MZ2- 3-070, Corksport intake MZ2-6-117-
31100, Corksport air duct MZ2-6-120-10, Powerflex PFR19-1511BX2 rear suspension bushings, Mazda Motorsports radiator
0000-01-2501-CR, Mazda Motorsports header 0000-06-2410, Mazda undertray/side shields DO8C-56-110A, DO8C-56-311, DO7A-
56-321."
In B-Spec Spec Lines, Mini Cooper Hatchback (R50) MT (02-06), change Notes as follows:
"~~Ride height measured from the metal underneath the bottom of the plastic door rocker molding shall be no less than 5 inches.~~
~~Allow rear sway bar Progress #62.0210.~~ Approved parts: Progress rear sway bar 62.0210, Mevotech leteral link CMK100003. Ride
height measured from the metal underneath the bottom of the plastic door rocker molding shall be no less than 5 inches."
In B-Spec Spec Lines, Mini Cooper Hatchback (R50) CVT (02-06), change Notes as follows:
"~~Ride height measured from the metal underneath the bottom of the plastic door rocker molding shall be no less than 5 inches.~~
~~Allow rear sway bar Progress #62.0210.CVT equipped cars allow Setrab 50-119-7612 transmission cooler in addition to~~
~~OEM.~~ Approved parts: Progress rear sway bar 62.0210, Mevotech leteral link CMK100003, Setrab transmission cooler 50-119-
7612. Ride height measured from the metal underneath the bottom of the plastic door rocker molding shall be no less than 5
inches."
In B-Spec Spec Lines, Mini Cooper (R56) MT (07-10), change Notes as follows:
"~~Allow L/F Strut-spring assembly 31 31 1 126, R/F Strut-spring assembly 31 31 1 125, Rear Shock-spring assembly 33 50 1 125.~~
~~Ride height measured from the metal underneath the bottom of the plastic door rocker molding shall be no less than 5 inches.~~
~~Adjustable front camber plate part number 31 30 1 507 is allowed. Allow rear sway bar Progress #62.0210. OBX header part #10-~~
~~2101-2S permitted.~~ Approved parts: Progress rear sway bar 62.0210, OBX header 10-2101-2S. Ride height measured from the
metal underneath the bottom of the plastic door rocker molding shall be no less than 5 inches.
In B-Spec Spec Lines, Mini Cooper (R56) AT (07-10), change Notes as follows:
"~~Allow L/F Strut-spring assembly 31 31 1 126, R/F Strut-spring assembly 31 31 1 125, Rear Shock-spring assembly 33 50 1~~
~~125.Ride height measured from the metal underneath the bottom of the plastic door rocker molding shall be no less than 5~~
~~inches. Adjustable front camber plate part number 31 30 1 507 is allowed. Allow rear sway bar Progress #62.0210. OBX header~~
~~part #10-2101-2S permitted. Automatic equipped cars only allow Setrab 50-119-7612 transmission cooler in addition to~~
~~OEM.~~ Approved parts: Progress rear sway bar 62.0210, Setrab transmission cooler 50-119-7612. Ride height measured from the
metal underneath the bottom of the plastic door rocker molding shall be no less than 5 inches. This configuration is not currently
eligible for Runoffs competition. This car must compete in three separate Majors/Super Tour events so performance data can be
collected. In addition to an SCCA data box, OBDII data collected via an AIM or similar device must be submitted."
In B-Spec Spec Lines, Mini Cooper Clubman (R55) (07-10), change Notes as follows:
"~~Allow L/F Strut-spring assembly 31 31 1 126, R/F Strut-spring assembly 31 31 1 125, Rear Shock-spring assembly 33 50 1 125.~~
~~Ride height measured from the metal underneath the bottom of the plastic door rocker molding shall be no less than 5 inches.~~
~~Adjustable front camber plate part number 31 30 1 507 is allowed. Allow rear sway bar Progress #62.0210. OBX header part #10-~~
~~2101-2S permitted.~~ Approved parts: Progress rear sway bar 62.0210, OBX header 10-2101-2S. Ride height measured from the
metal underneath the bottom of the plastic door rocker molding shall be no less than 5 inches.
In B-Spec Spec Lines, Mini Cooper (R56LCI) MT (11-13), change Notes as follows:
"~~Allow L/F Strut-spring assembly 31 31 1 126, R/F Strut-spring assembly 31 31 1 125, Rear Shock-spring assembly 33 50 1 125.~~
~~Ride height measured from the metal underneath the bottom of the plastic door rocker molding shall be no less than 5 inches.~~
~~Adjustable front camber plate part number 31 30 1 507 is allowed. Allow rear sway bar Progress #62.0210.~~ Approved parts:
Progress rear sway bar 62.0210. Ride height measured from the metal underneath the bottom of the plastic door rocker molding
shall be no less than 5 inches."
In B-Spec Spec Lines, Mini Cooper (R56LCI) AT (11-13), change Notes as follows:
"~~Allow L/F Strut-spring assembly 31 31 1 126, R/F Strut-spring assembly 31 31 1 125, Rear Shock-spring assembly 33 50 1 125.~~
~~Ride height measured from the metal underneath the bottom of the plastic door rocker molding shall be no less than 5 inches.~~
~~Adjustable front camber plate part number 31 30 1 507 is allowed. Allow rear sway bar Progress #62.0210. OBX header part #10-~~
~~2101-2S permitted with 41mm FPR. Automatic equipped cars only allow Setrab 50- 119-7612 transmission cooler in addition to~~
~~OEM.~~ Approved parts: Progress rear sway bar 62.0210, Setrab transmission cooler 50-119-7612. Ride height measured from the
metal underneath the bottom of the plastic door rocker molding shall be no less than 5 inches. This configuration is not currently
eligible for Runoffs competition. This car must compete in three separate Majors/Super Tour events so performance data can be
collected. In addition to an SCCA data box, OBDII data collected via an AIM or similar device must be submitted."
In B-Spec Spec Lines, Mini Cooper Clubman (R55) (11-15), change Notes as follows:
"~~Allow L/F Strut-spring assembly 31 31 1 126, R/F Strut-spring assembly 31 31 1 125, Rear Shock-spring assembly 33 50 1 125.~~
~~Ride height measured from the metal underneath the bottom of the plastic door rocker molding shall be no less than 5 inches.~~
~~Adjustable front camber plate part number 31 30 1 507 is allowed. Allow rear sway bar Progress #62.0210.~~ Approved parts:
Progress rear sway bar 62.0210. Ride height measured from the metal underneath the bottom of the plastic door rocker molding
shall be no less than 5 inches."
In B-Spec Spec Lines, Mini Cooper Coupe (R58) (12-15), change Notes as follows:
"~~Allow L/F Strut-spring assembly 31 31 1 126, R/F Strut-spring assembly 31 31 1 125, Rear Shock-spring assembly 33 50 1 125.~~
~~Ride height measured from the metal underneath the bottom of the plastic door rocker molding shall be no less than 5 inches.~~
~~Adjustable front camber plate part number 31 30 1 507 is allowed. Allow rear sway bar Progress #62.0210.~~ Approved parts:
Progress rear sway bar 62.0210. Ride height measured from the metal underneath the bottom of the plastic door rocker molding
shall be no less than 5 inches."
In B-Spec Spec Lines, Nissan Versa Sedan (2012-2019), change Notes as follows:
"~~Hardrace HR-Q0146 19mm rear sway bar permitted. Allow Injen intake SP1906.~~ Approved parts: Hardrace rear sway bar HR-
Q0146, Injen intake SP1906."
In B-Spec Spec Lines, Nissan Versa Hatchback (2012-2019), change Notes as follows:
"~~Hardrace HR-Q0146 19mm rear sway bar permitted. Allow Injen intake SP1906.~~ Approved parts: Hardrace rear sway bar HR-
Q0146, Injen intake SP1906."
In B-Spec Spec Lines, Nissan Versa (2020-), change Notes as follows:
"~~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.~~ This configuration is not currently eligible for Runoffs competition. This car must compete in three
separate Majors/Super Tour events so performance data can be collected. In addition to an SCCA data box, OBDII data collected
via an AIM or similar device must be submitted."
In B-Spec Spec Lines, Toyota/Scion IA Sedan (16-20), change Notes as follows:
"~~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. Allow ST Suspension Kit 1327502.~~ Approved parts: ST suspension kit 1327502. This configuration is not
currently eligible for Runoffs competition. This car must compete in three separate Majors/Super Tour events so performance
data can be collected. In addition to an SCCA data box, OBDII data collected via an AIM or similar device must be submitted."
In B-Spec Spec Lines, Toyota Yaris Hatchback (07-11), change Notes as follows:
"~~Speed sensor may be disconnected. Cold air intake K&N 69-8612TFK is allowed. Rear Swaybar PTR11-52071 is allowed.~~
Approved parts: TRD rear sway bar PTR11-52071, K&N intake 69-8612TFK. Speed sensor may be disconnected."
In B-Spec Spec Lines, Toyota Yaris Hatchback (12-18), change Notes as follows:
"~~Rear Swaybar PTR11-52071 is allowed. Cold air intake K&N 69-8612TFK is allowed. Speed sensor may be disconnected. Vehicles~~
~~equipped with rear disc brakes add 25 lb.~~ Approved parts: TRD rear sway bar PTR11-52071, K&N intake 69-8612TFK. Speed
sensor may be disconnected. Vehicles equipped with rear disc brakes add 25 lbs."
In B-Spec Spec Lines, Toyota Yaris Sedan (07-12), change Notes as follows:
"~~Rear Swaybar PTR11-52071 is allowed. Cold air intake K&N 69-8612TFK is allowed. Speed sensor may be disconnected.~~
Approved parts: TRD rear sway bar PTR11-52071, K&N intake 69-8612TFK. Speed sensor may be disconnected."

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)

neutralGT2 adds Cadillac CTS, Chevrolet Impala/Malibu/Monte Carlo/SS, Dodge Intrepid, Ford Fusion/Taurus, Lincoln MKS, Pontiac G8/GTO/Grand Prix, Toyota Camry, and Gen late Model Stock Car bodies.

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

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6. Dodge Intrepid
7. Ford Fusion
8. Ford Taurus
9. Lincoln MKS
10. Pontiac G8
11. Pontiac GTO
12. Pontiac Grand Prix
13. Toyota Camry
Gen late Model Stock Car Bodies are allows:
1. Chevrolet Camaro
2. Ford Mustang
3. Toyota Camry"

2026-01-01 GT2 GT3 Turbo to GT2?

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

neutralGT2 Mazda BP engine 1839cc classified with 46mm turbo inlet restrictor, 2250 lbs minimum weight.

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)

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Head Type Valves /

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)

unclearB-Spec: Sonic restrictors removed, Fit MT +25 lbs to 2550, Fit CVT restrictor removed, Mini Coopers restrictors increased 2-4 mm, Versa sedans -25 lbs to 2425, Versa/IA restrictors removed.

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):

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Restrictor (mm) & Type: "~~33 FPR~~"
Mini Cooper Hatchback (R50) MT (02-06):
Weight (lbs): "~~2545~~ 2525"
Mini Cooper (R56) MT (07-10):
Restrictor (mm) & Type: "FPR 45 47 OE Catalyst"
Mini Cooper (R56) AT (07-10):
Restrictor (mm) & Type: "4~~7 FPR (OE Catalyst) 42 FPR (Header)~~"
Mini Cooper Clubman (R55) (07-10):
Restrictor (mm) & Type: "FPR 45 47 OE Catalyst"
Mini Cooper (R56LCI) MT (11-13):
Restrictor (mm) & Type: "FPR 44 46"
Mini Cooper (R56LCI) AT (11-13):
Restrictor (mm) & Type: "4~~6 FPR (OE Catalyst) 41 FPR (Header)~~"
Mini Cooper Clubman (R55) (11-15):
Restrictor (mm) & Type: "~~FPR 44~~ 46"
Nissan Versa Sedan (2012-2019):
Min weight: "~~2450~~ 2425"
Nissan Versa Hatchback (2012-2019):
Min weight: "~~2450~~ 2425"
Nissan Versa (2020-):
Restrictor (mm) & Type: "~~38 FPR~~"
Toyota/Scion IA Sedan (16-20):
Restrictor (mm) & Type: "~~38 FPR~~"

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

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

fasterSTU Mazda MZR (LF, L3, L5) Turbo classified; Jack Spania Racing 70 mm intake manifold and Fab9 Tuning bottom-mount turbo kit approved.

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

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Varies Chart Short blocks, heads, and intakes may be freely
swapped within these engine designations. May
use Jack Spania Racing 70 mm sheet-metal
aluminum Intake manifold. Must use stock
throttle body or Acura part number 16400-PND-
A17. Fab9 Tuning bottom-mount turbo kit
approved with one of the STU approved Turbos.

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

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

slower991.2 GT3 Cup throttle body restrictor increases from 65mm to 70mm; 997.2 loses 100 lbs to 2800; Corvette LS engines get larger restrictors across multiple displacements and model years; LS3 and LT1 weight reduced 100 lbs each to 3150.

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

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model/year Porsche factory 911 GT3 Cup parts
catalog/service manual. Cars may not be altered in any way
except as authorized below. Drivers must have the correct
year manuals as they apply to their specific car in their
possession. Safety, drivers comfort, driver control and
instrumentation items may be modified per the GCR. Original
factory installed Matter/ IMV roll cages are allowed. The
stock unmodified fuel tank is allowed. Windshield clips must
be installed per GCR 9.3 Windshield Clips/Rear Window
Straps. All other SCCA safety standards apply. Tires per GCR
9.3 Tires. Lubricants, consumable fluids (brake fluid, coolant
etc.) and oil filters are open free. Factory (OEM manufacturer)
Lexan front windows allowed as delivered. ABS is allowed.
In GT2 Spec Lines, GT2 Cars – Porsche, change Notes as follows:
991.1 GT3 Cup: "3.8L flat six. 3000lbs. ~~w/72mm Throttle Body Restrictor (TBR).~~ Aftermarket header allowed."
991.2 GT3 Cup: "4.0L flat six. 3000lbs. w/~~65mm~~ 70mm Throttle Body Restrictor (TBR)."
997.2 GT3 Cup: "3.8L flat six. ~~2900~~ 2800 lbs. Aftermarket header allowed."
In GT2 Spec Lines, GT2 – ST, Chevy Corvette (-2013), change as follows:
5665:
Restrictor: "81 85mm flat plate"
Notes: "GM LS1, LS6. LS1/LS6 C6 Corvettes using the OEM C6 intake manifold and 90 mm throttle body must use a ~~78mm~~ flat
plate restrictor. OEM 75mm throttle body and manifold do not require a restrictor. LS~~6 may reduce weight by 50 lbs. L~~ S1/LS6
alternate intake manifold, DORMAN part # 615-900."
LS2 5967 Restrictor: "83 85mm "
L76 5967 Restrictor: "80 83mm flat plate"
LS3 6162 Restrictor: "80 83mm flat plate"
6162 GM LS3:
Weight: "~~3250~~ 3150"
Restrictor: "74 80mm flat plate"
6162 GM LT1:
Weight: "~~3250~~ 3150"
Restrictor: "74 77mm flat plate"
In GT2 Spec Lines, GT2 – ST, Chevy Corvette (14-19), change as follows:
5665:
Restrictor: "83 85mm flat plate"
Notes: "GM LS1, LS6. LS1/LS6 C6 Corvettes using the OEM C6 intake manifold and 90 mm throttle body must use a ~~78mm~~ flat
plate restrictor. OEM 75mm throttle body and manifold do not require a restrictor. LS~~6 may reduce weight by 50 lbs. L~~ S1/LS6
alternate intake manifold, DORMAN part # 615-900."
LS2 5967:
Weight: "~~3100~~ 3000"
Restrictor: "83 85mm flat plate"
L76 5967 Restrictor: "80 83mm flat plate"
6162 Restrictor: "80 83mm flat plate"
6162 LS3:
Weight: "~~3200~~ 3100"
Restrictor: "77 80mm flat plate"
6162 LT1:
Weight: "3~~200~~ 3100"
Restrictor: "74 80mm flat plate"

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)

slowerB-Spec Mazda2 10-14 cat-delete header swap removes 50 lb weight adder option, now Mazda Motorsports PN only.

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 GT2 Allow Larger Air Cooled Engines in Porsche 911 GT2

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

fasterGT2 Porsche 911 SC gains option of 4.0L 4V engine at 2350 lbs or 4.0L 2V at 2275 lbs.

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)

neutralM3 E92 classified in GT2 with 3999cc V8, 35mm restrictor, 3300 lbs minimum weight.

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.

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In GT Spec Lines, classify M3 E92 in GT Engines - BMW - BMW as follows:
GT Engines - BMW
Engine
Family
Engine Type Bore x Stroke

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

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)

neutralC-Spec rear sway bars approved for Chevrolet Cruze, Dodge Dart, Ford Focus, Honda Civic, Mazda3i, Toyota Corolla with specified part numbers.

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."

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Ford Focus Hatchback/Sedan (2011-18):
"~~Allow BC Racing E-21-BR or RedShift E-21-CSPEC kit. Allow Corksport Axl-3-318-Black adjustable rear camber arms.~~ Approved
parts: BC Racing E-21-BR or RedShift E-21-CSPEC suspension kit, Corksport Axl-3-318-Black adjustable rear camber
arms, Corksport Axl-3-071-12, Eibach 35134.312, or Whiteline BMR78XZ rear sway bar."
Honda Civic Coupe/Sedan (2012-15):
"~~Allow BC Racing A-58-BR or RedShift A-18-CSPEC kit.~~ Approved parts: BC Racing A-58-BR or RedShift A-18-CSPEC suspension kit,
Progress 62.1026 or Megan Racing MRS-HA-0791 rear sway bar."
Honda Civic Coupe/Sedan (2006-11):
"~~Allow BC Racing A-18-BR or RedShift A-58-CSPEC kit.~~ Approved parts: BC Racing A-58-BR or RedShift A-18-CSPEC suspension kit,
Progress 62.1026 or Megan Racing MRS-HA-0791 rear sway bar."
Mazda3i SKYACTIV (2012-13):
"~~Allow BC Racing N-03-BR or RedShift N-03-CSPEC kit. Allow Corksport Axl-3-318-Black adjustable rear camber arms.~~ Approved
parts: BC Racing N-03-BR or RedShift N-03-CSPEC suspension kit, Corksport Axl-3-318-Black adjustable rear camber
arms, Corksport Axl-3-071-12, Eibach 35134.312, or Whiteline BMR78XZ rear sway bar."
Mazda 3i MZR (2010-13):
"~~Allow BC Racing N-03-BR or RedShift N-03-CSPEC kit. Allow Corksport Axl-3-318-Black adjustable rear camber arms.~~ Approved
parts: BC Racing N-03-BR or RedShift N-03-CSPEC suspension kit, Corksport Axl-3-318-Black adjustable rear camber
arms, Corksport Axl-3-071-12, Eibach 35134.312, or Whiteline BMR78XZ rear sway bar."
Mazda 3i (2004-09):
"~~Allow Corksport Axl-3-318-Black adjustable rear camber arms.~~ Approved parts: BC Racing N-03-BR or RedShift N-03-CSPEC
suspension kit, Corksport Axl-3-318-Black adjustable rear camber arms, Corksport Axl-3-071-12, Eibach 35134.312, or Whiteline
BMR78XZ rear sway bar."
Toyota Corolla (2007-12):
"~~Allow BC Racing C-02-BR or RedShift C-02-CSPEC kit.~~ Approved parts: BC Racing C-02-BR or RedShift C-02-CSPEC suspension kit,
TRD PTR11-12080 or Megan Racing MRS-TY-1710 rear sway bar."
Toyota Corolla (2013-18):
"~~Allow BC Racing C-02-BR or RedShift C-02-CSPEC kit.~~ Approved parts: BC Racing C-02-BR or RedShift C-02-CSPEC suspension
kit, TRD PTR11-12080 or Megan Racing MRS-TY-1710 rear sway bar."

What the rules allowed changed as listed; this does not say what any particular car ran.