Giacomo Agostini 1967 he battled Hailwood in one of the most dramatic seasons in Grand Prix history. Each rider had 5 victories before the championship was decided in Agostini's favor at the last race of the season. Agostini dropped a bombshell on the Grand Prix world when he announced he would never again race at the Isle of Man TT, after the death of his close friend, Gilberto Parlotti during the 1972 TT. He considered the 37 mile circuit unsafe for world championship competition. At the time, the TT was the most prestigious race on the motorcycling calendar. Other top riders joined
1976 Grand Prix motorcycle racing season the most prestigious race of the year, the event had been increasingly boycotted by the top riders. The TT finally succumbed to pressure for increased safety in racing events. The season also marked the end of another era with 15 time world champion Giacomo Agostini winning his last Grand Prix at the season-ending round at the Nürburgring. As Agostini had chosen the MV Agusta for this challenging track, this win was also the last ever for a 500cc four-stroke engine. 1976 Grand Prix motorcycle racing season The 1976 Grand Prix motorcycle racing season was the 28th F.I.M. Road Racing World