SuperNats XXIV

44DAYS

2022 Winter Series

81DAYS

2022 Pro Tour

165DAYS

SKUSA Mexico

33DAYS

PKC California

187DAYS

Texas Sprint Racing

2021 TBA

California ProKart Challenge

2021 ProKart Challenge Classes
We reserve the right to make additional modifications to our rules as experience dictates. The ProKart Challenge offers a broad spectrum of classes that provide a place to race for drivers of all skill levels and racing experience. The impetus of the series is to offer a friendly environment where anyone can race with virtually any kart package.

Notes: (1) Participation is contingent upon SKUSA racing license approval in your chosen class. See MEMBERSHIP page for details. (2) Participation in the local option classes will be closely monitored, and we reserve the right to eliminate any or all of them from the class lineup without sufficient interest. (3) Trophies will be presented at each race to the top 3 finishers in each class, as long as there is a minimum of 5 entries per class.

According to the SKUSA Rulebook, the driver's racing age for purposes of class eligibility is based on the age attained by the last day of the racing year. SKUSA reserves the right to advance, as well as limit advancement of, any competitor found to be outside of the ‘performance envelope’ for the class. See SKUSA rule 15.1 and 15.3

Push back bumper will not be required for any classes of the 2021 Pro Kart Challenge.

IAME SWIFT CLASSES

Micro Swift
sponsored by P1 Racing Engines
Engine: IAME Mini Swift 60 + 16mm factory header
Age: 7-10 (See Class Clarification Info)
Weight: 225 lbs
Tires: Evinco Blue 'SK-H' Spec from SKUSA
Fuel: VP MS98
Oil: Elf HTX909 (6.76oz per/gal)
Additional Equipment: Neck brace & SFI-approved chestprotector required
Kart # 10-99
Mini Swift
sponsored by Formula Works
Engine: IAME Mini Swift 60
Age: 9-13
Weight: 245 lbs
Tires: Evinco Blue 'SK-H' Spec from SKUSA
Fuel: VP MS98
Oil: Elf HTX909 (6.76oz per/gal)
Additional Equipment: Neck brace required; SFI-approved chest protector required for drivers 12 & under
Kart # 100-199
 

IAME KA100 Classes

KA100 Senior
sponsored by Nash Motorsportz
Engine: IAME KA100
Age: 14+
Weight: 360 lbs
Tires: Evinco Blue 'SK-H' Spec from SKUSA (7.10 Rear)
Fuel: VP MS98
Oil: Elf HTX909 (6.76oz per/gal)
Kart # 900-999
KA100 Master
sponsored by MDG Karting
Engine: IAME KA100
Age: 30+
Weight: 390 lbs
Tires: Evinco Blue 'SK-H' Spec from SKUSA (7.10 Rear)
Fuel: VP MS98
Oil: Elf HTX909 (6.76oz per/gal)
Kart # 200-299
KA100 Junior
sponsored by West Coast Motorsports
Engine: IAME KA100 + 22mm factory header
Age: 11-15
Weight: 320 lbs
Tires: Evinco Blue 'SK-H' Spec from SKUSA (7.10 Rear)
Fuel: VP MS98
Oil: Elf HTX909 (6.76oz per/gal)
Additional Equipment: Neck brace required; SFI-approved chest protector required for drivers 12 & under
Kart # 800-899
 

IAME X30 CLASSES

X30 Senior
sponsored by HRT Driver Development
Engine: IAME X30
Age: 15+ (14 with waiver)
Weight: 365 lbs
Tires: Evinco Red 'SK-M' Spec from SKUSA
Fuel: VP MS98
Oil: Elf HTX909 (6.76oz per/gal)
Kart # 300-399
X30 Master
sponsored by Mike Manning Karting
Engine: IAME X30
Age: 30+
Award for highest finishing 45+
Weight: 400 lbs
Tires: Evinco Red 'SK-M' Spec from SKUSA
Fuel: VP MS98
Oil: Elf HTX909 (6.76oz per/gal)
Kart # 500-599
X30 Junior
sponsored by Rolison Performance Group
Engine: IAME X30 + 22.7mm factory header
Age: 12-15 (11 with waiver)
Weight: 320 lbs
Tires: Evinco Blue 'SK-H' Spec from SKUSA
Fuel: VP MS98
Oil: Elf HTX909 (6.76oz per/gal)
Additional Equipment: Neck brace required; SFI-approved chest protector required for drivers 12 & under
Kart # 700-799
 

SSE/KZ CLASSES

Pro Shifter
sponsored by Positive Beverage
Engine/Weight: IAME SSE 175cc // 395 lbs
KZ // 385 lbs
Age: 15+
Award for highest finishing Rookie
Tires: Evinco Red 'SK-M' Spec from SKUSA
Fuel: VP MS98
Oil: Elf HTX909 (6.76oz per/gal)
Kart # 200-299
Master Shifter
sponsored by Positive Beverage
Engine/Weight: IAME SSE 175cc // 415 lbs
KZ // 405 lbs
Age: 30+
Award for highest finishing 45+
Tires: Evinco Red 'SK-M' Spec from SKUSA
Fuel: VP MS98
Oil: Elf HTX909 (6.76oz per/gal)
Kart # 600-699
 

LOCAL OPTIONS CLASSES

Shifter S125
Appropriate for Novice and Exp. drivers (S1/S2/S3)
sponsored by Empire Karts
Engine: Spec Honda
Age: 15+
Weight: 395 lbs
Tires: Evinco Red 'SK-M' Spec from SKUSA
Fuel: VP MS98
Oil: Elf HTX909
Kart # 100-199
Shifter M125
Appropriate for Novice and Exp. drivers (S4/S4SM)
sponsored by Empire Karts
Engine: Spec Honda
Age: 30+
Weight: 405 lbs
Tires: Evinco Red 'SK-M' Spec from SKUSA
Fuel: VP MS98
Oil: Elf HTX909
Kart # 400-499
S5 - Junior Stock Moto
sponsored by Empire Karts
Engine: Spec Honda
Age: 12-15
Weight: 340 lbs
Tires: Evinco Red 'SK-M' Spec from SKUSA
 
Fuel: VP MS98
Oil: Elf HTX909
Additional Equipment: Neck brace required; SFI-approved chest protector required for drivers 12 & under
Kart # 500-599
 
 
We reserve the right to make additional modifications to our rules as experience dictates.