Harley-Davidson , often abbreviated H-D or Harley, is an American motorcycle manufacturer. Founded in Milwaukee, Wisconsin, during the first decade of the 20th century, it was one of two major American motorcycle manufacturers to survive the Great Depression. Harley-Davidson also survived a period of poor quality control and competition from Japanese manufacturers. All sponsorship requests should be sent to <a href="mailto:[email protected]">[email protected]</a>.
Road Racing World Championship Grand Prix is the premier championship of motorcycle road racing. It is currently divided into three classes: MotoGP, Moto2 and Moto3. All three classes use four-stroke engines. In 2010, 250cc two-strokes were replaced by the new Moto2 600cc four-stroke class. In 2012, 125cc two-strokes were replaced by the Moto3 250cc four-stroke class with maximum weight limit 65kg with fuel, and the engine capacity for MotoGP increased from 800cc to 1,000cc.