Neil Hudson won what premier motocross championship in 1981?
Motocross World Championship FIM Motocross World Championship is the premier championship of motocross racing, organized by the Fédération Internationale de Motocyclisme (FIM), currently divided into two distinct classes: MX1 and MX2. Race duration is 30 minutes plus 2 laps per moto. The series runs 18 events with two motos at each round.
John Hartle John Hartle (22 December 1933 - 31 August 1968) was an English professional road racer who competed in national, international and Grand Prix motorcycle events.