SuperNats XXVIII

69DAYS

2026 Winter Series

127DAYS

2026 Pro Tour

205DAYS

SKUSA Mexico

1DAY

2025 PKC

37DAYS

2025 TSRS

15DAYS

Next ProKart Challenge Event

PRE-ENTRY OPEN NOW
Closes Tues, Oct 7 at 11:59 PM PDT

K1 Oct 3-5 - PRE-ENTRY OPEN NOW
Schedule // Pit Spots
Round 6 - K1 Circuit October 11-12, 2025
K1 Circuit
32240 Grand Ave
Winchester, CA 92596
k1circuit.com
Google Maps
There will be a Sunoco vendor pumping fuel.
There is no camping at this facility.

California ProKart Challenge
Revised Number Plate Dimensions
Written by John Motley - National Tech Director   
Saturday, 30 December 2017 15:23

Due to the difficulty of using the CIK specification numbers on Cadet bodywork we are modifying the requirement in Rulebook Section 20.2.2.1 to "at least 5" tall with a .750" stroke". The competition number shall be bordered by a yellow background of .375 minimum. No other modifications to the specification is allowed.