The MV Agusta 500cc Three (1965-1973) or MV Agusta Tre was a road racing motorcycle produced by the Italian manufacturer MV Agusta to compete in the 500 cc Grand Prix motorcycle racing World Championship. The motorcycle was introduced in 1966 to compete against the ever competitive Honda racing machines and was a bored out version of MV Agusta's highly successful 350 cc three cylinder. Giacomo Agostini won consecutive world championships in the 500 cc class with this motorbike from 1966 to 1972. In addition, MV Agusta won the Constructors' World Championships from 1967 to 1972. The MV Agusta Tre is considered the most successful racing motorcycle in history.