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Next ProKart Challenge Event


Will close March 26th at 6am.

Round 2 - Streets of Willow March 30-31, 2018
Willow Springs
3500 75th Street West
Rosamond, CA 93560
(661) 256-6666
Google Maps

Event Bulletin Board

  • 3/15/18 - Our customers requested that we run the track CCW, but after reviewing all of the speed and safety issues that are created by running that direction, we have decided to run up the hill as we did last year.  
  • 3/14/18 - PRE-TECH is mandatory PRIOR to taking the track for your first practice session for this event (whether it be Friday or Saturday morning), and you MUST get a sticker from Tech showing you passed PRE-TECH
  • 3/9/18 - Track direction updated to CCW, "down the hill"

 Important News

Pre-Entry Cutoff for SuperNationals 21 is this coming Monday night, October 30th at 11:59pm Pacific Time!
Friday, 27 October 2017 14:45
All drivers NOT wanting to pay walk-up fees (and risk not getting into their class) must be registered before this CUTOFF, as well as have a current SKUSA license. BOTH can be done online at

Walk up fees increase by $250 for ALL CLASSES for an at-track race entry! Click for all pricing info.

X30 Senior is now SOLD OUT, and entries are currently being WAIT LISTED. Quite a few other categories are approaching their class caps – ESPECIALLY S2!

Go to the Supernats section of our website for ALL Event Info and to sign up NOW!
California ProKart Challenge To Crown 2017 Champions
Monday, 23 October 2017 11:48

S1 Pro Stock Honda champion Billy Musgrave (Photo:

The 2017 California ProKart Challenge wrapped up the season at the largest finale in series history. A record total of 193 entries contested the two-day Streets of Lancaster Grand Prix on September 30-October 1 to complete the California PKC six race events, as the 11 different series champions were decided. The flagship Superkarts! USA regional program will now honor the title winners and the entire championship podium at the 2017 California ProKart Challenge Championship Awards Banquet, set for October 28 at the BeX Bar & Grill in Lancaster, California.

For a fourth time in his career, Billy Musgrave will be receiving the #1 trophy for earning the most points in the Vemme Kart S1 Pro Stock Honda division. Musgrave was able to outlast S1 rookie Hunter Pickett and Matias Podboj to earn his fourth championship in five years, thanks to three wins and three runner-up finishes. Pickett came away with his first S1 victory along with Podboj, while Nic LeDuc stole the finale round at the Streets of Lancaster. Sixteen-year-old Nicky Hays was able to defend his crown in the Formula Works/CompKart X30 Senior championship race. Hays won the opening round in Buttonwillow, adding two more podium finishes to secure the championship leading up to the finale in Lancaster. Second in the standings is Michael Avansino, recording his best finish in the championship and earning his first career CPKC victory during the CalSpeed weekend. Andrick Zeen finished the season in third, highlighted by five top-five results.
Last Call to Purchase PKC Banquet Tickets
Monday, 23 October 2017 09:17
For complete details and to purchase tickets, please see the Awards Banquet Page.

TODAY/Monday, October 23 at 12pm is the DEADLINE for all ticket purchases! 

All PKC supporters are welcome! Tickets are just $25 for adults and $15 for kids 4-10.

ALL 2017 top 3 PKC champs will be recognized! Everyone in attendance is eligible for exciting RAFFLE PRIZES.

Who will be the surprise TEAM OF THE YEAR FOR 2017?
Las Vegas Strip Is Home to the Superkarts! USA SuperNationals 21 Circuit
Tuesday, 17 October 2017 08:19

The SKUSA SuperNationals 21 circuit is set for November 15-19 at the Las Vegas Convention Center and Westgate Las Vegas Resort & Casino

The Superkarts! USA SuperNationals has 20 years of history surrounding the bright lights of Las Vegas – from the ‘X-Plex’ to the Rio to Sam Boyd Stadium to the lots outside the Las Vegas Convention Center and the Westgate Las Vegas Resort & Casino. The LVCC ‘Gold’ lot was home to the SuperNationals in 2015 and 2016. 2017 brings new racing turf as the event moves to the LVCC ‘Diamond’ lot, directly adjacent to the Westgate. The shift to the 1.25 million square foot space offers the opportunity for SKUSA to create a new track layout for the 21st running of the Superkarts! USA SuperNationals, set for November 15-19. One of the main features is that portions of the track are now directly next to the famous Las Vegas Strip.

This year, Superkarts! USA expanded the group of experienced karters tasked with designing the new layout outside the LVCC/Westgate to three. Last year’s track designers Howie Idelson and Bonnier Moulton were joined by 2003 SuperNationals winner Wesley Boswell. The 33-year-old from California first raced the SuperNats in 2001, and has been either a driver or mechanic in the years since. Boswell has become one of the most respected driver coaches within the industry, helping drivers throughout North America and at some of the largest international events in the world. Idelson and Moulton are the lone two drivers in SuperNationals history to compete at all 20 events. Idelson earned numerous victories and championships over the decades of karting, including competing in 12 different countries – while playing integral roles in multiple brands within the business. Moulton is a three-time SuperNationals winner in addition to being a key figure in the industry, having penned the initial layout of the now gone Black Rock Raceway in Utah.
SKUSA Rulebook Updates as of October 16, 2017
Written by John Motley - National Tech Director   
Monday, 16 October 2017 20:01
The latest round of updates and clarifications to the SKUSA Rulebook effective immediately and which apply for SuperNationals 21 include: Driver Equipment – New rule regarding hair outside of helmet Technical Protests
20.2.2. Number Plate Rules – In effect now, but pending revisions prior to 1/1/18 Weights – Penalties for loss on track Wheels – Penalties for loss on track Air Filters – Not required for declared rain races Engines Standards/All Classes – New spark plug specs Transmission for Shifter Classes – New rule regarding drain plug KZ Engines – New spark plug specs Exhaust Restrictor for X30 Jr – In effect now, but changing 1/1/18 Pistons, Wrist Pins, and Piston Rings Monetary fines for driving onto scales Contact with others at scales Remaining with your kart at scales
KZ Supplementary Rules 

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