A succession of fast middleweight two-stroke twins that punched well above their weight in performance terms effectively established Yamaha's reputation as purveyor of exciting sports roadsters par excellence. One of the most important technological developments occurred in 1973 with the incorporation of reed valves in the inlet tract: 'Torque Induction' in Yamaha parlance. The result was an engine that produced just as much peak power as before but was considerably more flexible. Offered with US title, this RD250 is a true 'time warp' example. It has had two owners in Harrisburg, Pennsylvania where the climate is much kinder to motorcycles than here in the UK. The Yamaha is in outstandingly original condition, shows a very low mileage (1,957) and has matching frame and engine numbers. All taxes have been paid and a NOVA declaration completed so UK registration is straightforward.