In motorcycling, three riders have managed to win six world championships in their respective discipline, in the premier class, and only one winning in consecutive years: Giacomo Agostini. The Italian legend won World Championships in two classes totalling 15 titles including eight in the 500cc class; with seven of these coming in consecutive years from 1966 to 1972. In the 350cc class, he won seven titles from 1968 to 1974 as he recorded seven consecutive titles on two separate occasions.

Source: MotoGP.com – Read Full Article Here