
The ProKart Challenge is set to return to the K1 Circuit for R4 of the 2025 championship program over the June 21-22 weekend
The 2025 ProKart Challenge is set to begin the second half of the schedule, hosting Round Four of the championship program at the K1 Circuit on June 21-22. The new facility in Winchester, California will be site of the two-day event to continue the run toward the 2025 championships.
Two events served host to the opening three rounds of the 2025 ProKart Challenge, with a double-round weekend at K1 Circuit during the first weekend of March before traveling to the new Spring Mountain Karting facility in Nevada in April for Round Three.
The Round Four action at K1 Circuit will be on a different layout, featuring a revised ‘Pro Track’ that utilizes the D2 chicane and cut-through at turn eight. Official practice for the event begins on Saturday, June 21 with four rounds prior to qualifying to close out the day. Sunday, June 22 welcomes warm-up, Prefinal and Final to conclude the action for Round Four.
Keagan Kaminski has a three-race win streak heading into K1 Circuit in the Formula Works KA100 Senior class. He leads the championship by 133 points over Shea Aldrich with two-time podium finisher Johnie Stamps in third. Two wins have Matthew Cagle at the top of the SuperSpeed Bearings KA100 Junior championship chase. Sebastian Hauser is in second, trailing by 79 points heading into the second half of the season, with Canadian Nathan Dupuis sitting third in the standings. Two drivers have won over the three rounds in Mike Manning Karting KA100 Master. Tim Meyer leads the championship with his two wins over Round One winner Logan Manus, while Damon Duckworth holds the third position.
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Recently we’ve heard several allegations of non-compliant IAME engines or parts being used in IAME competition racing. SKUSA is aware of these allegations and takes any and all claims of ‘cheating’ seriously and are working closely with the IAME factory in Italy as well as both IAME USA Importers to identify any non-compliant parts and fix these issues immediately. |

Joe Turney secured his first victory of the 2025 season in Pro X30 (Photo: EKN)
The first day of racing for the 2025 season was completed on Saturday with the Superkarts! USA Winter Series completing Round One of the eighth season for the championship. The Orlando Kart Center, hosting the series for the first time, welcomed a record-setting non-SuperNationals event with over 300 entries competing in the nine categories on the day. Rain hit the area early in the morning, leaving a wet track through warm-up and it wasn’t until halfway through qualifying that drivers began switching over to the dry Evinco Tires. Cooler temperatures and strong winds kept everyone bundled up throughout the day despite the temps reaching the low 60s. One red flag on the day delayed the action by 30 minutes, pushing the final few main events under the lights at the Orlando, Florida circuit. In the end, four victories by Kart Republic led the way, including two-time SuperNationals winner Joe Turney claiming the Pro X30 victory while four-time SuperNationals winner Daniel Formal claimed victory in his Birelart debut with PSL Karting.
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The true headline category for all 27 editions of the Superkarts! USA SuperNationals is the top level shifterkart division. It all began in 1997 on the outskirts of Las Vegas at the Race Kart City USA circuit where the first SuperNationals took place and Alex Barron was the first name etched in the long line of winners. Careers have been launched, defined, and put into legendary status with a victory on SuperSunday. Pro Shifter reached international status in the mid-2000s when the European factories first sent over their official drivers. Since that time, six different nations have claimed a headline victory and the big pay day in Vegas. Another stacked field of both North America’s best and international superstars is set to battle for a 27th time when we arrive this coming week. Who will it be that wins the $10,000 payday?
Defending race winner Daniel Formal will not be in Las Vegas to take a shot at earning a record-setting fifth SuperNationals triumph as the Costa Rican is competing at the Lamborghini Super Trofeo World Finals event in Andalusia, Spain. Read full story at eKartingNews.com |

Gavin Bayliff used a last lap pass to secure victory in Pro Shifter (Photo: EKN)
The final day of action at the 2025 Superkarts! USA Pro Tour WinterNationals was contested on Sunday at the Speedsportz Racing Park. A humid and hot day at the New Caney, Texas facility, welcoming the largest event in the 16 year history of the series, closed out the first event to the Lone Star State since 2014. Round Two of this year’s championship was held on the day for seven categories while the Pro Shifter division capped off its weekend with a Prefinal and Final.
The Pro Shifter presented by PSL Karting featured a duel between a new name to the front of the field and a veteran. Gavin Bayliff (TKG / Birelart) came through the heat races on Saturday with a win and the pole position after the points were tabulated. Five-time SKUSA SuperNationals winner Billy Musgrave (Factory Karts) matched his total but started the Prefinal from the outside of the front row. Bayliff led early before Musgrave took over the lead on lap three. Shortly after, a red flag came out for a flip in the second half of the 43 driver field. All drivers walked away. Musgrave handled the restart, fending off the early pressure and drove away to a 1.4 second advantage to claim the pole position for the Final. Bayliff was able to secure the holeshot to begin the 25-lap main event with Musgrave slotting into second. The two pushed away from the rest of the field over the opening laps. On lap eight, Musgrave moved to the lead and led until lap 14. Musgrave retook the top spot on lap 19 and they ran that way until the final lap. Musgrave went defensive with Bayliff waiting until turn 14. A center punch bump and run pushed Musgrave wide enough for Bayliff to slip underneath, getting to the apex at turn 15 first and going on to cross the line for his first SKUSA Pro Tour victory. Musgrave settled for second with defending champion Matheus Morgatto (PSL / Birelart) holding off Kiwi Jay Urwin (PSL / Birelart) with top qualifier Charlie Stines (Fury / GP Kart) right there in fifth to cap off an amazing weekend for the Indiana driver.
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