Today, AMA Supercross, a FIM World Championship, is undisputedly the top Supercross series in the world and draws elite rider talent from every corner of the globe. An international cadre of manufacturers target their best equipment and development teams at these series in the quest for Championship titles. AMA National Championship and FIM World Championship titles are presented in the Supercross class, which primarily features four-stroke 450cc technology. The AMA Supercross Lites class, which showcases riders on four-stroke 250cc motorcycles, is split into U.S.eastern and western regional divisions. Register below to win four tickets to the Show on Saturday, April 17th!