a decision of the fim to reduce the volume of the racing machines in the future to 113 db(a), would be particularly problematic for the four-stroke mv agusta. two-stroke were easier to dampen without sacrificing performance with a revision to the expansion chamber. the four-cylinder mv agusta was measured at between 125 and 130 db(a) on unrestricted exhaust pipes. read and agostini drove with earplugs to endure the noise.