page_title: MV Agusta 500 racers
section_title: MV Agusta 500 4C 1973-1976
hierarchical_section_title: MV Agusta 500 racers / MV Agusta 500 4C 1973-1976
caption_attribution_description: English: MV Agusta 500 Corsa ST, 1976 Italiano: MV Agusta 500 Corsa ST del 1976, ultima realizzazione di casa MV per la classe 500
context_page_description: The MV Agusta 500cc road racers were motorcycles that the manufacturer MV Agusta built and which were used to compete in 500cc Grand Prix motorcycle racing series between 1950 and 1976. 18 500cc world championship titles were achieved with these machines ridden by John Surtees, Gary Hocking, Mike Hailwood, Giacomo Agostini and Phil Read between 1958 and 1974.
context_section_description: A new four-cylinder MV Agusta debuted in 1973. Initially the engine was only 430 cc, being an over-bored 350 cc machine. In 1974 the engine capacity was brought up to 497 cc. Compared to the old four-cylinder, the power of 92 hp was a considerable improvement.
  At the start the engine still had a valve angle of 45°, but this was reduced to 42° and then in 1975 to 35°. The engine weighed only 55 kg and was 38 cm wide, compared to the old four-cylinder which weighed 70 kg and was 45 cm wide. In the latest version, bronze combustion chambers were used which did not deform at high temperatures. The machine received cast wheels and disc brakes and a completely closed double cradle frame that was constructed from chrome molybdenum tubes. The highest specified power was 102 hp at 14,000 rpm, but a problem for MV Agusta was the noise requirement introduced the FIM in 1976. To meet to the noise limit of 113 dB(A), silencers had to be fitted which reduced power. With muffled exhausts, the machine in its final version delivered 98 hp at 14,000 rpm.
caption: 1976 MV Agusta 500 4C
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