The Kawasaki Ninja H2 is a "supercharged supersport" class motorcycle in the Ninja sportbike series, manufactured by Kawasaki Heavy Industries, featuring a variable-speed centrifugal-type supercharger.The track-only variant is called Ninja H2R, and it is the fastest and most powerful production motorcycle on the market; it produces a maximum of 310 horsepower (230 kW) and 326 horsepower (243 kW) with ram air. The H2R has 50% more power than the fastest street-legal motorcycles, while the street-legal Ninja H2 has a lower power output of 200 hp (150 kW)^[14]–210 hp (160 kW) with ram air