 Suzuki started to get competitive with Barry Sheene and Jack Findlay on four cylinder two-strokes.MV Agusta pulled out of the 350cc class, giving Agostini a free run, taking his fourteenth world title.Walter Villa took over for the deceased Renzo Pasolini and won the 250cc crown giving Harley-Davidson the title after they bought the Aermacchi factory, reworked and renamed the bikes.