A failed team sale has spilled over into court, with AM Racing now suing Sigma Performance Services (SPS) over what it says are still-unreturned race team assets and confidential information tied to a collapsed acquisition. The dispute traces back to October 2025, when SPS agreed to purchase AM Racing, which at the time fielded an entry in the NASCAR O’Reilly Auto Parts Series. The deal was announced publicly, suggesting a transition of ownership was in motion.
But the agreement never made it across the finish line. By January 2026, AM Racing had pulled out of the deal entirely, officially ending the attempted sale. What followed, according to the lawsuit filed in Iredell County Superior Court, was an ongoing dispute over who now controls certain equipment and data that had changed hands during the negotiation process.
At the center of the complaint is a set of physical race assets AM Racing says remain in SPS’s possession. Those items include a superspeedway chassis, two intermediate chassis, an ARCA engine, and an ARCA garage box. Together, the team values them at roughly $320,000.But the physical equipment is only part of the issue.
AM Racing also claims SPS retained access to sensitive team information obtained during due diligence, the stage in which a potential buyer is given access to internal records, technical data, and operational details to evaluate a purchase. According to the filing, that information has not been returned and may have been used beyond the scope of the now-terminated deal. The team values the intellectual property at about $350,000.
That brings the total disputed value in the case to approximately $670,000.The lawsuit argues that SPS’s continued possession of the equipment and information creates an urgent risk to AM Racing’s operations. The filing points out that in stock car racing, parts and chassis are routinely subjected to heavy wear and crash damage, meaning the longer the dispute drags on, the greater the risk that the assets could be altered, damaged, or lost entirely.
AM Racing is asking the court for injunctive relief, essentially an emergency order requiring SPS to return the equipment and stop using or modifying any of the disputed property while the case plays out. Even though the original purchase agreement reportedly included an arbitration clause to resolve disputes, AM Racing is now seeking court intervention, arguing the situation can’t safely wait for a slower process.
“The provisional remedy is needed as the matter is urgent,” the filing states, citing the unique nature of racing equipment and the risk of irreparable harm if the assets are used or destroyed. So far, SPS has not responded publicly in court filings, and the allegations remain untested before a judge. The case highlights a familiar tension in motorsports business deals: teams don’t just trade physical assets.
They also exchange data, setups, and engineering knowledge that can carry competitive weight long after negotiations end. When a sale falls apart, separating what was shared and what can legally be kept often becomes the hardest part to unwind. For now, that question sits with the court as AM Racing seeks both the return of its equipment and an order preventing any further use of the disputed information.
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