Formula Xtreme was a professional racing class sanctioned by the American Motorcyclist Association. Formula Xtreme was part of the AMA's road racing series, which also included AMA Superbike Championship, AMA Supersport Championship, and AMA Superstock. By design, Formula Xtreme rules are the most liberal of all the classes within the AMA Superbike Championship...The intent of the Formula Xtreme class is to include a diverse group of motorcycles... With Daytona Motorsports Group's takeover of AMA Pro Racing in 2009, Formula Xtreme was replaced with the Daytona Sportbike class.