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 2020 Pro Kart Challenge.
ALL MINI, KA100, and X30 JR on now on the NEW HARD COMPOUND TIRES at SKUSA EVENTS. Double check with your series, but only LO-206 classes should remain on the previous compound.
IAME SWIFT CLASSES
|
Micro Swift |
|
Engine: |
IAME Mini Swift 60 + 16mm factory header |
|
Age: |
7-10 (See Class Clarification Info) |
|
Weight: |
225 lbs |
|
Tires: |
NEW Evinco Blue 'SK-H' spec tires from SKUSA |
|
Fuel: |
VP MS98 |
|
Oil: |
Elf HTX909 (8oz per/gal) |
|
Additional Equipment: |
Neck brace & SFI-approved chestprotector required |
|
Kart # |
10-99 |
|
Mini Swift |
|
Engine: |
IAME Mini Swift 60 |
|
Age: |
9-13 |
|
Weight: |
245 lbs |
|
Tires: |
NEW Evinco Blue 'SK-H' spec tires from SKUSA |
|
Fuel: |
VP MS98 |
|
Oil: |
Elf HTX909 (8oz per/gal) |
|
Additional Equipment: |
Neck brace required; SFI-approved chest protector required for drivers 12 & under |
|
Kart # |
100-199 |
IAME KA100 Classes
|
KA100 Senior |
|
Engine: |
IAME KA100 |
|
Age: |
14+ |
|
Weight: |
360 lbs |
|
Tires: |
NEW Evinco Blue 'SK-H' spec tires from SKUSA (7.10 Rear) |
|
Fuel: |
VP MS98 |
|
Oil: |
Elf HTX909 (8oz per/gal) |
|
Kart # |
900-999 |
|
KA100 Master |
|
Engine: |
IAME KA100 |
|
Age: |
30+ |
|
Weight: |
390 lbs (Under Review) |
|
Tires: |
NEW Evinco Blue 'SK-H' spec tires from SKUSA (7.10 Rear) |
|
Fuel: |
VP MS98 |
|
Oil: |
Elf HTX909 (8oz per/gal) |
|
Kart # |
200-299 |
|
KA100 Junior |
|
Engine: |
IAME KA100 + 22mm factory header |
|
Age: |
11-15 |
|
Weight: |
320 lbs |
|
Tires: |
NEW Evinco Blue 'SK-H' spec tires from SKUSA (7.10 Rear) |
|
Fuel: |
VP MS98 |
|
Oil: |
Elf HTX909 (8oz per/gal) |
|
Additional Equipment: |
Neck brace required; SFI-approved chest protector required for drivers 12 & under |
|
Kart # |
800-899 |
IAME X30 CLASSES
|
X30 Senior |
|
Engine: |
IAME X30 |
|
Age: |
15+ (14 with waiver) |
|
Weight: |
365 lbs |
|
Tires: |
Evinco Red 'M' spec tires from SKUSA |
|
Fuel: |
VP MS98 |
|
Oil: |
Elf HTX909 (8oz per/gal) |
|
Kart # |
300-399 |
|
X30 Master |
|
Engine: |
IAME X30 |
|
Age: |
30+ |
|
Weight: |
395 lbs |
|
Tires: |
Evinco Red 'M' spec tires from SKUSA |
|
Fuel: |
VP MS98 |
|
Oil: |
Elf HTX909 (8oz per/gal) |
|
Kart # |
500-599 |
|
X30 Junior |
|
Engine: |
IAME X30 + 26mm factory header |
|
Age: |
12-15 (11 with waiver) |
|
Weight: |
320 lbs |
|
Tires: |
NEW Evinco Blue 'SK-H' spec tires from SKUSA |
|
Fuel: |
VP MS98 |
|
Oil: |
Elf HTX909 (8oz per/gal) |
|
Additional Equipment: |
Neck brace required; SFI-approved chest protector required for drivers 12 & under |
|
Kart # |
700-799 |
|
X30 SUPER Master |
|
Engine: |
IAME X30 |
|
Age: |
45+ |
|
Weight: |
405 lbs |
|
Tires: |
Evinco Red 'M' spec tires from SKUSA |
|
Fuel: |
VP MS98 |
|
Oil: |
Elf HTX909 (8oz per/gal) |
|
Kart # |
600-699 |
SSE/KZ CLASSES
|
Pro Shifter |
|
Engine/Weight: |
IAME SSE 175cc // 395 lbs
KZ // 385 lbs |
|
Age: |
15+ |
|
Tires: |
Evinco Red 'M' spec tires from SKUSA |
|
Fuel: |
VP MS98 |
|
Oil: |
Elf HTX909(8oz per/gal) |
|
Kart # |
100-199 |
|
Pro Shifter 2 (Semi-Pro) |
|
Engine/Weight: |
IAME SSE 175cc // 395 lbs
KZ // 385 lbs |
|
Age: |
15+ |
|
Tires: |
Evinco Red 'M' spec tires from SKUSA |
|
Fuel: |
VP MS98 |
|
Oil: |
Elf HTX909 (8oz per/gal) |
|
Kart # |
200-299 |
|
G1 |
|
Engine/Weight: |
IAME SSE 175cc // 415 lbs
KZ // 405 lbs |
|
Age: |
30+ |
|
Tires: |
Evinco Red 'M' spec tires from SKUSA |
|
Fuel: |
VP MS98 |
|
Oil: |
Elf HTX909 (8oz per/gal) |
|
Kart # |
700-799 |
|
G2 |
|
Engine/Weight: |
IAME SSE 175cc // 420lbs
KZ // 410 lbs |
|
Age: |
45+ (or 30+ with 2 or fewer years racing experience) |
|
Tires: |
Evinco Red 'M' spec tires from SKUSA |
|
Fuel: |
VP MS98 |
|
Oil: |
Elf HTX909 (8oz per/gal) |
|
Kart # |
400-499 |
LOCAL OPTIONS CLASSES
Shifter Senior
Appropriate for Novice and Exp. drivers (S2/S3) |
|
Engine: |
Spec Honda |
|
Age: |
15+ |
|
Weight: |
395 lbs |
|
Tires: |
Evinco Red 'M' spec tires from SKUSA |
|
Fuel: |
VP MS98 |
|
Oil: |
Elf HTX909 |
|
Kart # |
300-399 |
Shifter Master
Appropriate for Novice and Exp. drivers (S4/S4SM) |
|
Engine: |
Spec Honda |
|
Age: |
30+ |
|
Weight: |
405 lbs |
|
Tires: |
Evinco Red 'M' spec tires from SKUSA |
|
Fuel: |
VP MS98 |
|
Oil: |
Elf HTX909 |
|
Kart # |
400-499 |
|
S5 - Junior Stock Moto |
|
Engine: |
Spec Honda |
|
Age: |
12-15 |
|
Weight: |
340 lbs |
|
Tires: |
Evinco Red 'M' spec tires 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.
|
Regional 
