SuperNats 29

181DAYS

2027 Winter Series

246DAYS

2026 Pro Tour

29DAYS

SKUSA Mexico

15DAYS

2026 PKC

9DAYS

2026 TSRS

36DAYS

Next ProKart Challenge Event


PRE-ENTRY OPEN UNTIL MAY 20
You can still register online but
$25 Late/Walk-up fee applies.
PKC Round 3 - SONOMA RACEWAY May 23-24, 2026
Sonoma Raceway Karting Center
29355 Arnold Dr,
Sonoma, CA 95476
sonomaraceway.com
Google Maps
There will be a Sunoco vendor pumping fuel.

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.