 247cc Twin Cylinder Two Stroke. Bore 56mmX50mm Stroke. Compression is 8.1:1 35 HP @ 10,000rpm Weight 211 Lbs. In 1965 this was the bike to have in the 100mi lightweight race at Daytona. Dick Mann won the race for Yamaha in 65, starting a thirteen year win streak for the brand. By the time the seventies were ending Yamaha had been dominant in 250cc road racing for more than a decade and launched many a world champions career. |