This is a model born of the pursuit of design originality. In the development as well, running engineering design elements. Taking as the keyword "A 250cc for the Japanese," was given a compact and easy to size up the physical body in accordance with the Japanese. What's more, it embodied a "dynamic design" that gives a strong impression of the dynamics in any situation. It also mounted Yamaha's first 2-cylinder. In the Japanese market at that time was dominated by a utility model, YD-1 brought a new image of sports performance.
Yamaha learned quickly and, in recent years, the twin has removed all traces of its origins and has created a dynasty motorcycle. The first is YD2 electric start. Then came the first dedicated sports model, YDS1 and YDS2 (first model exported to Europe). Yamaha to compete in the first French GP at Clermont-Ferrand in 1961 and again in 1965 with a succession of well-known rider, Vesco, Read, Redman, Ivy, Saarinen, and Agostini.