The Kawasaki Ninja ZX-6R, often just called “Ninja”, is a motorcycle in the super sports category from the Japanese manufacturer Kawasaki with an initial displacement of 599 cm³ and later also 636 cm³. The ZX-6R has been built since 1995 and has been continuously developed since then. In some countries in Europe, Asia and Australia, the version developed in 2002 is called “636cc”; The internal type designation ZX6xxX is internationally uniform.