Spec Tires: The Vega tire will be the spec tire for all Tri-C Karters race series and special event races. Please see the individual class listing below for the required spec Vega tire for each class.
Rain Tires: Rain tires will be open to all brands.
Spec Fuel: Sunoco Supreme 112 or pump gas (see listing below). See individual class listings for specified fuel.
Mixing of fuel brands or types is ILLEGAL and will result in a DQ. Any additives, whether they are performance enhancing or not, are ILLEGAL and will result in a DQ (with the exception of manufacturer additives present in pump gas from the pump).
It is advised to purchase pump fuel the day of the race. A test sample of both fuels will be taken that day and used by Post Tech for comparison.
Legal 91 octane pump gas can be purchased at this local station only
for races at the respective tracks:
California Nights @ Apex Motorsports Park
Shell Gas Station
4039 N. Perris Blvd
(NE corner of Perris Blvd & Ramona Expressway
Perris, CA 92571
2026 Race classes
Kid Kart Tillotson
Age: 5-7 years (driver must have attained the age of 5 before competing)
Weight: 160 lbs
Tires: Vega VAH RED 4.60/10.0-5 front & Rear
Engine:
-
Tillotson 105R Bambino
Clutch: Noram Stinger 18t (factory supplied)
Rear Sprocket: 66t (updated 5/1/26)
Fuel: Shell 91 pump gas
Tech Specs: Tillotson 105R Bambino
TaG Micro
Competition Age: 7-10 years
Weight: 225 lbs.
Tires: Vega XH4 GREEN 4.60/10.0-5 front & Rear
Wheels: No width restrictions
Engine:
-
IAME Micro Swift 60cc restricted header as supplied by manufacturer
-
Vortex Micro Rok 60cc restricted header as supplied by manufacturer
Fuel: Sunoco Supreme 112
Oil:
-
Motul Kart Grand Prix
-
Elf HTX 909 SAE 50
Tech Specs: IAME Swift 60cc and Rok Cup USA Vortex Rok 60cc
Supplemental rules: Tri-C supplemental rules
TaG Mini
Competition Age: 8-13 years
Weight: 245 lbs.
Tires: Vega XH4 GREEN 4.60/10.0-5 front & Rear
Wheels: No width restrictions
Engine:
-
IAME Mini Swift 60cc
-
Vortex Mini Rok 60cc
Fuel: Sunoco Supreme 112
Oil:
-
Motul Kart Grand Prix
-
Elf HTX 909 SAE 50
Tech Specs: IAME Swift 60cc and Rok Cup USA Vortex Rok 60cc
Supplemental rules: Tri-C supplemental rules
100cc Tag Junior
Competition Age: 12-16 years
Weight: 320 lbs.
Tires: Vega XH4 GREEN 4.60/10.0-5 front & 7.10/11.0-5 Rear
Engine:
-
IAME KA100 with 22mm IAME factory header
Fuel: Sunoco Supreme 112
Oil:
-
Motul Kart Grand Prix
-
Elf HTX 909 SAE 50
Tech Specs: IAME KA100
Supplemental rules:
100cc Tag Senior
Competition Age: 15+ years
Weight: 360 lbs.
Tires: Vega XH4 GREEN 4.60/10.0-5 front & 7.10/11.0-5 Rear
Engine:
-
IAME KA100
-
Vortex Rok VLR 100
Fuel: Sunoco Supreme 112
Oil:
-
Motul Kart Grand Prix
-
Elf HTX 909 SAE 50
Tech Specs:
Supplemental rules:
100cc Tag Master
Competition Age: 30+ years
Weight: 380 lbs.
Tires: Vega XH4 GREEN 4.60/10.0-5 front & 7.10/11.0-5 Rear
Engine:
-
IAME KA100
-
Vortex Rok VLR 100cc
Fuel: Sunoco Supreme 112
Oil:
-
Motul Kart Grand Prix
-
Elf HTX 909 SAE 50
Tech Specs:
Supplemental rules:
Briggs Lo206 Jr 1 Cadet
Competition Age: 7-12 years
Weight: 245 lbs.
Tires: Vega VAH RED 4.60/10.0-5 front & Rear
Engine:
-
Briggs & Stratton LO206
-
Carburetor slide - Blue with Carb lock
Clutch:
-
See Briggs & Stratton LO206 2026 Regulations
-
Gear ratio is open
Fuel: Shell 91 pump gas
Tech Specs:
Briggs Lo206 sr Heavy
Competition Age: 15+ years
Weight: 370 lbs.
Tires: Vega VAH RED 4.60/10.0-5 front & 6.00/11.0-5 Rear
Engine:
-
Briggs & Stratton LO206
-
Carburetor slide - Black (stock)
Clutch:
-
See Briggs & Stratton LO206 2026 Regulations
Fuel: Shell 91 pump gas
Tech Specs:
tillotson t225 Junior
Competition Age: 12-15 years (updated 3/3/26)
Weight: 320 lbs.
Tires: Vega VAH RED 4.60/10.0-5 front & 6.00/11.0-5 Rear
Engine:
-
Tillotson TPP-225RS
-
Euro spec pipe, header & flex required
Clutch:
-
See Tillotson 2026 US regulations
Fuel: Shell 91 pump gas
Tech Specs:
opEN sHIFTER Senior
Competition Age: 15+ years
Weight:
-
KZ & ICC 390 lbs
-
Vortex Rok Shifter 380 lbs.
-
Honda CR125 "Stock Moto" 370 lbs
-
FZ125 "Stock Moto" 370 lbs
Tires:
-
Evinco M "Red"
-
Vega XM4 WHITE
-
LeVanto KRT
-
Vega XH4 GREEN
Engine:
Fuel: Sunoco Supreme 112
Oil:
-
Motul Kart Grand Prix
-
Elf HTX 909 SAE 50
Briggs Lo206 Sr Lite
Competition Age: 15+ years
Weight: 350 lbs.
Tires: Vega VAH RED 4.60/10.0-5 front & 6.00/11.0-5 Rear
Engine:
-
Briggs & Stratton LO206
-
Carburetor slide - Black (stock)
Clutch:
-
See Briggs & Stratton LO206 2026 Regulations
Fuel: Shell 91 pump gas
Tech Specs:
Briggs World Formula
Competition Age: 15+ years
Weight: 360 lbs.
Tires: Vega VAH RED 4.60/10.0-5 front & 6.00/11.0-5 Rear
Engine:
-
Briggs & Stratton World Formula
-
Walbro PZ 26 carburetor
Clutch:
-
Premier Titan (as supplied by Premier)
Gear Ratio: Open
Fuel: Shell 91 pump gas
Tech Specs:
tillotson t225 Senior
Competition Age: 15+ years
Weight: 360 lbs. - New weight for 2026
Tires: Vega VAH RED 4.60/10.0-5 front & 6.00/11.0-5 Rear
Engine:
-
Tillotson TPP-225RS
-
Euro spec pipe, header & flex required
Clutch:
-
See Tillotson 2026 US regulations
Fuel: Shell 91 pump gas
Tech Specs:
opEN sHIFTER master
Competition Age: 35+ years
Weight:
-
KZ & ICC 390 lbs
-
Vortex Rok Shifter 380 lbs.
-
Honda CR125 "Stock Moto" 370 lbs
-
FZ125 "Stock Moto" 370 lbs
Tires:
-
Evinco M "Red"
-
Vega XM4 WHITE
-
LeVanto KRT
-
Vega XH4 GREEN
Engine:
Fuel: Sunoco Supreme 112
Oil:
-
Motul Kart Grand Prix
-
Elf HTX 909 SAE 50