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The 2025 AMA Supercross Championship is the 52nd season of off-road stadium motorcycle racing in the United States.. Comprising 17 rounds, the series runs from January until May, crowning supercross champions in both the 250cc and 450cc classes, concluding with the Salt Lake City round on May 10. [1]
Brandon Robinson. American Flat Track is an American motorcycle racing series. [1] The racing series, founded and sanctioned by the American Motorcyclist Association (AMA) in 1954, originally encompassed five distinct forms of competitions including mile dirt track races, half-mile, short-track, TT steeplechase and road races.
Supercross racing classifications are governed by the displacement of the motorcycle's engine. They were based on two-stroke engines until 2006, when four-stroke engines replaced two-stroke engines. From 2007 until 2012, a formula nomenclature similar to IndyCar was used, with the 450cc class known as Supercross and 250cc as Supercross Lites.
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The U.S. Hurt Report, begun in 1976 and published in 1981, expresses disdain for the ignorance and misinformation about motorcycle safety among riders studied, noting that 92% of riders in accidents had no formal training, compared to 84.3% of the riding population, and that when interviewed, riders frequently failed to take responsibility for their errors, or even perceive that accident ...
The facility had a quarter-mile drag strip, a 2.043 mi (3.288 km) road course, 7/10-mile kart track as well as mud racing tracks. The road course at Palm Beach International Raceway was a 2-mile, 10-turn circuit constructed of hot-mix asphalt and set on an aggregate base. It was 40 ft (12 m) wide with a 1/3-mile section measuring 80 ft (24 m).
The first United States Grand Prix was held in 1961 as a non-championship race at the Daytona International Speedway on the 2-mile or 3.2 kilometre long motorcycle course. [1] In 1964, the FIM upgraded the Daytona race to world championship status by making it the opening round of the 1964 Grand Prix motorcycle racing season.
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