Yamaha YR3 350cc

1969 - 1970

Not a great deal of change from the previous model, the main alteration being the compression ratio which was brought back up to 7.5:1. The engine had a bore and stroke of 61x59.6 mm giving a capacity of 348cc. The bike weighed 340 lb and developed a healthy 36bhp at 7000 rpm.

Owner: Allan Shires