NASCAR O'Reilly Auto Parts Series - Fixed - 2026 Season 3

The NASCAR iRacing Class B Series (Fixed Setup) features the NASCAR O'Reilly Chevrolet Camaro, Ford Mustang, and Toyota Supra stock cars as raced in the NASCAR O'Reilly Auto Parts Series, with multi-car fields running the same schedule of short, intermediate and speedway ovals as the "open" Class B series.

The series employs a fixed setup format, giving competitors the freedom to focus on their racing and strategic skills and eliminate concerns about chassis, aerodynamic and tire settings. Slightly narrower and with different aerodynamic characteristics compared to its Class A counterpart, the Class B cars are the perfect intermediate step between the NASCAR Craftsman Truck Series machinery and the Class A NASCAR Cup Series Next Gen cars.