AMA Supercross is one of the highest-profile motorsports in the world. It features world-class athletes pushing motorcycles to their limits in stadium settings across the country.
The AMA Supercross Championship is comprised of both the 450SX and 250SX classes. The 450SX is the premier class of the AMA Supercross Championship, featuring production-based 450cc single-cylinder motorcycles. The 250SX is a production-based class featuring 250cc single-cylinder motorcycles which is split into Eastern (U.S.) and Western regional divisions, each awarding its own title.
Supercross got its start in 1971 when the AMA conducted a professional motocross race on a temporary track at Daytona International Speedway. While most motocross races had been held in the rural countryside, this inaugural Daytona event brought motocross to the people.
A year later, the concept was taken a step further, when motocross was brought to major urban sports stadiums, beginning with the Los Angeles Coliseum. The term “Supercross,” a combination of Super Bowl and Motocross, was coined. In the 1980s and 1990s, teams, motorcycle manufacturers, broadcast partners, race facilities and sponsors worked together to bring the sport to new audiences. Top Supercross riders became household names, and off-road motorcycle sales soared.