Starting 2012, the Moto3 class (250cc one cylinder) replaced the 125cc class. 660cc bikes replaced the 250cc bikes in 2010, with the class rebranded as Moto2. In 2002, 990cc bikes replaced the 500c bikes and the class was renamed as MotoGP. The sidecar class left the series to form its own championship after 1996. The 350cc class was discontinued in 1982, two years later the 50cc class was replaced with an 80cc class, which was discontinued in 1989. Due to escalating costs that resulted in a number of manufacturers leaving the championship, the FIM limited the 50cc bikes to a single cylinder, the 125cc and 250cc bikes were limited to two cylinders and the 350cc and 500cc bikes were limited to four cylinders. ![]() There were five classes when the championship started in 1949 500cc, 350cc, 250cc, 125cc and sidecar (600cc). The Grand Prix Road-Racing World Championship was established in 1949 by the sport's governing body, the Fédération Internationale de Motocyclisme (FIM), and is the oldest motorsport World Championship. ![]() Classes that have been discontinued include 500cc, 350cc, 250cc, 125cc, 80cc, 50cc and Sidecar. Grand Prix motorcycle racing is the premier championship of motorcycle road racing, which has been divided into three classes: MotoGP, Moto2, and Moto3. ![]() The following is a list of FIM Grand Prix motorcycle racing World Champions from 1949, in order of class and year.
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