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Late Registraton starts March 24
$250 Late/Walk-Up Fee 

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PRO TOUR WINTERNATS - RNDS 1&2 March 27-29, 2026
Musselman Honda Circuit
11800 S Harrison Rd
Tucson, AZ 85747
(520) 245-5278
mhcircuit.com / Google Maps
No Weds practice. Unofficial Thursday practice run by SKUSA.
Do not ship packages to the track, ship to your hotel or hold for pickup with carrier.
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SKUSA Pro Tour

EKN Trackside: 2026 Superkarts! USA Pro Tour WinterNationals – Preview
Friday, 27 March 2026 06:55

The Musselman Honda Circuit in Tucson (Photo: Musselman Honda Circuit)

The 2026 Superkarts! USA Pro Tour is set to get underway this weekend – March 27-29 – with a visit to the Musselman Honda Circuit. The 10th edition of the SKUSA WinterNationals will make its first visit to Tucson, Arizona, marking the third ever trip for Superkarts! USA with previous SpringNationals held in 2011 and 2013. Over 250 entries are set to battle over the eight categories that will contest this year’s championship program.

The Musselman Honda Circuit has been hosting karting events since mid 2000s when the Stars of Karting program held events. Other championships have visited the Tucson facility over the last three decades, including last weekend with the RMC America’s Trophy program making its debut. The 8/10-mile course in the counter-clockwise direction is a replica of the Suzuka circuit in Japan, featuring 12 turns with a bit of elevation change from one end of the track to the other. Its new paved paddock will provide less dirt for teams and competitors to navigate traffic with a secondary paddock established along the backstretch to welcome the over 250 entries.  Read full story on eKartingNews.com
 
Superkarts! USA Announces Removal of Pushback Bumper for Three SKUSA Pro Tour Classes
Wednesday, 25 February 2026 13:11

The 2026 Superkarts! USA Pro Tour is set to begin in one month, traveling to the Musselman Honda Circuit over the weekend of March 27-29 for the 2026 SKUSA WinterNationals. It will be the third trip to the Tucson, Arizona facility, marking the first time returning since it hosted the 2013 SKUSA SpringNationals. Registration opened on February 23 with over 100 pre-registered entries within the first 24 hours. As the organization prepares for the 17th season of the SKUSA Pro Tour, changes in regulations have been updated for the 2026 program.

Highlighting the changes for the 2026 SKUSA Pro Tour will be the removal of the pushback bumper system in Pro X30, X30 Junior and KA100 Master divisions. These categories have been selected by Superkarts! USA officials to not utilize the front nose cone mounting system that was implemented in SKUSA competition for all IAME categories in 2018. This will make five total categories competing without the pushback bumper, including Pro and Master Shifter.
Read more...
 
SKUSA RETURNS TO MUSSELMAN HONDA CIRCUIT WITH PRE-ENTRY OPENING TODAY AT 12 NOON
Sunday, 22 February 2026 15:05

The first ever visit for Superkarts! USA Pro Tour to Tucson was in 2011 (Photo: On Track Promotions – otp.ca)

Superkarts! USA (SKUSA) is set to return to the renowned Musselman Honda Circuit in Tucson, Arizona, having last visited the track 15 years ago. Back in 2011, the likes of Colton Herta, Sabré Cook, Daniel Bray, and Fritz Leesmann fought for bragging rights. This year, the SKUSA ProTour WinterNationals returns to the desert and the newly paved facility to do it all again.

Pre-entry opens today, Monday, February 23, 2026, at 12:00 PM Pacific Time. Following news of the collaboration with ROTAX, anticipation is building for what is expected to be one of the largest and most competitive gatherings of kart racers in North America.

With record participation projected across multiple weekends, SKUSA officials strongly encourage competitors to secure their entries early. Several classes are expected to sell out. Once capacity is reached, additional entries will not be accepted. Drivers and teams who want to guarantee their position on the grid should complete pre-registration as soon as it opens.

In preparation for the event, SKUSA is implementing several important policies to ensure a safe and efficient race weekend for all participants.

Read more...
 
SUPERKARTS! USA CONFIRMS 2026 WINTER NATIONALS AT MUSSELMAN HONDA CIRCUIT AND NEW COLLABORATION WITH KARTING SOLUTIONS GROUP (KSG)
Saturday, 10 January 2026 09:50
SUPERKARTS! USA™ (SKUSA) is pleased to officially confirm that the 2026 Winter Nationals will take place at the Musselman Honda Circuit in Tucson, Arizona March 27-29, 2026. This announcement concludes an extended site selection process that saw several potential venues unable to finalize appropriately scaled logistics capable of supporting the size, and operational needs of the SKUSA ProTour.

“We delayed this announcement because we were committed to securing a facility that meets the high standards our competitors expect,” said SKUSA CEO Tom Kutscher. “Several tracks expressed interest but ultimately could not deliver. Musselman Honda has stepped up with an outstanding venue that rivals any national-level karting facility in the country.”
Read more...
 
EKN Trackside: 2025 Superkarts! USA Pro Tour SummerNationals – Preview
Thursday, 24 July 2025 07:31

Jay Urwin holds the Pro Shifter championship standings lead going into the SummerNationals (Photo: EKN)

The 2025 Superkarts! USA Pro Tour is set to conclude this weekend at the New Castle Motorsports Park. For an 11th straight year, the New Castle, Indiana facility will be the site of the SKUSA Pro Tour SummerNationals. A record-setting 300 entries are registered over the eight categories on the July 25-27 weekend, set to conclude the 16th championship season of the SKUSA Pro Tour.

Event schedule begins with unofficial practice on Wednesday and Thursday. Official sessions begin on Friday with four, seven-minute sessions with a fifth and final 12-minute run for all eight categories to close out the day. Seven of the divisions will follow the two round format on the weekend, including Pro X30 moving away from the Pro Show format. Warm-up, qualifying, Prefinal (8 laps) and Final (16 laps) make up Saturday with the same lineup for Sunday to complete Round Three and Round Four of the SKUSA Pro Tour. The SKUSA Pro Show features only the Pro Shifter division. Qualifying, Super Pole, Heat 1 and Heat 2 on Saturday set the stage for the 12-lap Prefinal and the 20-lap Final to decide the SKUSA SummerNationals winner. Read full story on eKartingNews.com
 


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