Reaperside Autos - Yamaha have known for handling capability of R1, but the engine is too heavy, Which causes the engine to be too slow when changing direction, Which is clearly superior to its competitors. Yamaha YZF – R1 2015 Until 2015, Yamaha has decided to re-design and re-R1 brings back the same charm that is typical of the original model of the engine. In recent years, Yamaha has been extensively tested various versions of the engine.