Formula Xtreme was a professional racing class sanctioned by the

American Motorcyclist Association The American Motorcyclist Association (AMA) is an American nonprofit organization of more than 200,000 motorcyclists that organizes numerous motorcycling activities and campaigns for motorcyclists' legal rights. Its mission statement is "to promo ...

. Formula Xtreme was part of the AMA's road racing series, which also included

AMA Superbike Championship AMA Superbike Championship is an American motorcycle racing series that has been run every year beginning in 1976. For most of its existence it has been considered the premier motorcycle road racing series in the United States. It is sanctioned ...

AMA Supersport Championship AMA Supersport is an American motorcycle racing series. The race series was founded and sanctioned by the American Motorcyclist Association (AMA) in 1987. The road racing series allows motorcycles of up to 600cc engine capacity. The American Mot ...

, and

AMA Superstock Ama or AMA may refer to: Ama Languages * Ama language (New Guinea) * Ama language (Sudan) People * Ama (Ama Kōhei), former ring name for sumo wrestler Harumafuji Kōhei * Mary Ama, a New Zealand artist * Shola Ama, a British singer * Ām ...

. Motorcycles were

homologated Homologation (Greek ''homologeo'', ὁμολογέω, "to agree") is the granting of approval by an official authority. This may be a court of law, a government department, or an academic or professional body, any of which would normally work f ...

and had to be of a model type that was designed and legal for street use in the United States and was available from retail dealerships in the U.S. Although liberal by the standards of other classes AMA road racing series, Formula Xtreme rules still limited the modifications that may have been made. The rules specified what changes were and were not permitted, including modification or replacement of various engine internals, transmission components, and other non-powertrain components of the vehicle such as the suspension, wheels, frame, swingarm, bodywork, wheels, etc. The rules also specified minimum weight limits, allowable fuel types, which production components had to be left in place and rules for availability of non-stock components from the manufacturer. Lastly, the type of engine (displacement and configuration) was governed by a set of guidelines that attempted to bring technical diversity to the class by establishing technical limitations that allowed different technologies to remain competitive. For example, air/oil-cooled twin-cylinder engines were allowed a larger displacement limit. There were also differences in allowed modifications to engine internals depending on the engine configuration, again to encourage technical diversity in the class by ensuring that motorcycles with different engine configurations remained competitive. Merrill Vanderslice, AMA Pro Racing's Director of Competition, stated:

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...

Manufacturers represented in the AMA Formula Xtreme Series included the Big Four;

Honda is a Japanese public multinational conglomerate manufacturer of automobiles, motorcycles, and power equipment, headquartered in Minato, Tokyo, Japan. Honda has been the world's largest motorcycle manufacturer since 1959, reaching a product ...

, Kawasaki,

Suzuki is a Japan, Japanese multinational corporation headquartered in Minami-ku, Hamamatsu, Japan. Suzuki manufactures automobiles, motorcycles, All-terrain vehicle, all-terrain vehicles (ATVs), outboard motor, outboard marine engines, wheelchairs ...

and

Yamaha Yamaha may refer to: * Yamaha Corporation, a Japanese company with a wide range of products and services, established in 1887. The company is the largest shareholder of Yamaha Motor Company (below). ** Yamaha Music Foundation, an organization estab ...

, and in 2008 BMW,

Ducati Ducati Motor Holding S.p.A. () is the motorcycle-manufacturing division of Italian company Ducati, headquartered in Bologna, Italy. The company is directly owned by Italian automotive manufacturer Lamborghini, whose German parent company is Au ...

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and Buell were represented as well. Perhaps the most well known event on the annual Formula Xtreme calendar was the

Daytona 200 The Daytona 200 is an annual motorcycle road racing competition held in early spring at the Daytona International Speedway in Daytona Beach, Florida. The race was founded in 1937 when it was sanctioned by the American Motorcyclist Association ...

, which was not only the inaugural event of the Formula Xtreme season each year, but was also the longest event on the Formula Xtreme calendar (in terms of distance and number of laps). With Daytona Motorsports Group's takeover of AMA Pro Racing in 2009, Formula Xtreme was replaced with the

Daytona Sportbike The AMA Pro Daytona Sportbike Championship was a motorcycle racing series run by AMA Pro Racing. The category was similar to the Formula Xtreme class, allowing a wide range of engine types and displacements. The flagship race for the series was th ...

class.

Champions

References

{{reflist * 2007 AMA Pro Racing Rulebook for Road Races Formula Xtreme Motorcycle road racing series