The International Hot Rod Association (IHRA) announced today that IHRA Pro Stock will officially replace the Factory Stock Showdown (F.S.S.) category beginning with the 2026 season.

The IHRA Pro Stock class will feature factory-built, supercharged platforms, including the Chevrolet COPO Camaro, Dodge Drag Pak and Ford Mustang Cobra Jet.

IHRA leadership views the change as a natural progression and strengthening of professional drag racing within the organization, aligning with the association’s long-term vision for growth, competitiveness and national relevance, sanctioning body officials said, and has been built to preserve factory identity while delivering a high-performance, fan-focused racing product.

IHRA Pro Stock will compete in both of IHRA’s premier championship platforms: the IHRA Outlaw Nitro Series and the IHRA Triple Crown Series.

This integration provides racers with multiple opportunities for exposure, championship contention and substantial financial incentives, the organization said.

For more information, including payout structure, visit ihra.com.