SuperNats XXVIII

201DAYS

2026 Winter Series

TBA

2025 Pro Tour

28DAYS

SKUSA Mexico

21DAYS

2025 PKC

57DAYS

2025 TSRS

35DAYS

Next ProKart Challenge Event


PRE-ENTRY OPEN SOON

 

Round 4 - K1 Circuit June 21-22, 2025
K1 Circuit
32240 Grand Ave
Winchester, CA 92596
k1circuit.com
Google Maps
There will be a Sunoco vendor pumping fuel.
There will be no camping at this facility for the foreseeable future.

California ProKart Challenge

California Prokart Challenge Resumes At Streets Of Willow
Friday, 23 March 2018 09:32

California ProKart Challenge returns to the Streets of Willow road course on March 30-31 (Photo: DromoPhotos.com)

The 2018 season for the California ProKart Challenge began the first weekend of February. Now eight weeks later, the Superkarts! USA flagship regional program resumes with an exciting second event of the season. Competitors from the West Coast as well as across the United States are preparing to head to Rosamond, California and attack the Streets of Willow circuit. The famed course is among the most unique, as the road racing circuit is the only one to feature a distance of over 1-mile on the SKUSA 2018 calendar. Drafting, partners and playing chess at nearly 100mph sums up what the action will be like throughout the weekend at Streets.

The track configuration puts the full course in the clockwise direction (aka ‘up the hill’) at 1.6 miles for the X30 Senior, X30 Master and all Stock Honda categories. The X30 Junior, Mini Swift and Micro Swift divisions will utilize a shorter 1.1-mile layout.
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First Winners of 2018 California ProKart Challenge Decided
Wednesday, 07 February 2018 12:24

Defending S1 champion Billy Musgrave began the 2018 season with victory in Buttonwillow (Photo: DromoPhotos.com)

The Superkarts! USA schedule on the west coast kicked off with the opening event of the California ProKart Challenge on February 2-3 at the Buttonwillow Raceway Park. The SKUSA flagship regional program welcomed over 150 drivers to the challenging 7/10-mile course in Buttonwillow, California. The weather was perfect for racing, and the now 12 different categories featuring Honda and IAME powerplants raced into the amazing sunset as the first event closed. The busy day of racing on Saturday featured seven new winners at the California PKC.
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California ProKart Challenge Set to Kick Off 2018
Thursday, 25 January 2018 10:30


Start of S3/S5 Main Event in 2017 (photo: DromoPhotos.com)

The 14th season of the California ProKart Challenge is set to begin February 2-3 at the Buttonwillow Raceway Park. Round one of the six-race championship series kicks off the flagship regional program for Superkarts! USA, coming off a successful inaugural SKUSA Winter Series event in Florida. The 2018 season for the California PKC program is a year of additions and changes based on the progression of the SKUSA organization and the sport itself. Among the changes include an expansion to 12 classes, a new numbering system to help both staff and spectators, and new trophies to be presented during the award ceremonies following each event.
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X30 Super Master Division Created for SKUSA ProKart Challenge and LAKC
Friday, 05 January 2018 11:44

In just one week, the 2018 season will begin for the Superkarts! USA organization as the inaugural SKUSA Winter Series kicks off at the AMR Homestead-Miami Motorplex in southern Florida. It is the earliest start to the season for the organization in almost 20 years, which continues to expand its national and regional schedule in an effort to reach all four corners of the United States. The California ProKart Challenge – SKUSA’s flagship regional program – is also slated to begin in less than 30 days, opening its six-race championship chase at Buttonwillow on February 2-3. New for the California PKC in 2018, and also for the SKUSA-affiliate Los Angeles Karting Championship, will be the X30 Super Master division.
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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. 
 


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