350 cc V4. The Jawa was fast, but less reliable and Ivy crashed and was killed during practice for the DDR. Agostini won the first eight races, but because Count Agusta did not agree with the move of the GP des Nations to Imola, he did not ride there. This allowed Phil Read to win on the Yamaha. In Opatija, Agostini didn't start and Silvio Grassetti won on the Jawa V4. 1970 MV Agusta was dominant in the 1970 season. Agostini won all races in the 350 and 500 cc classes except the last race in Spain. His new teammate Angelo Bergamonti won both classes there. 1971 The 1971 season started sadly for MV Agusta, when Angelo Bergamonti was killed in a crash during the spring race in Riccione. Agostini won in Austria, Germany, the Netherlands, the GDR, Finland and Sweden. His machine suffered breakdowns at the Isle of Man TT, Czechoslovakia and in Italy (where Alberto Pagani rode the machines that had been intended for Angelo Bergamonti). Agostini did not compete at Ulster and Spain, but his six wins gave him the championship. Yamaha were beginning to mount a strong challenge in the form of Jarno Saarinen in the new Yamaha TR3. His first 350 cc Grand Prix was in Czechoslovakia after Agostini's motorcycle had a mechanical failure. He then finished second to Agostini in the Finnish Grand Prix before winning the Nations Grand Prix in Italy. Saarinen finished second to Agostini in the 350 cc Championship. MV Agusta 350 4C 1972–1976 With the two-stroke Yamahas rapidly challenging MV Agusta's dominance, more power was needed from the engine. The three cylinder engine was at the limit of its development, so leading engineer Ruggero Mazza designed an ultra-short-stroke (54 x 38mm) inline-four that safely revved to 16,500 rpm. To offset the weight of the complex engine compared to the simpler Yamaha twins, the cycle parts were made as light as possible. The frame, designed by Arturo Magni was made of titanium. Magnesium forks were sourced from Ceriani and magnesium cast wheels from Morris. Disc brakes were used front and rear. Technical data MV Agusta 350 4C 1972–1976 Results 1972–1976 1972 The 1972 season did not start well for MV Agusta. In the opening race Germany, Agostini was defeated by Saarinen in a direct head-to-head. With his new water-cooled Yamaha YZ 634, Saarinen set a new absolute lap record. In France,