Kawasaki H2 Mach IV

In September 1971 the H2 was a direct result of the success of the 500 cc Kawasaki H1 Mach III introduced in 1969. The H2 engine was a 3-cylinder two-stroke with an engine displacement of which produced at 6,800 rpm, a power-to-weight ratio of to every of weight. This made it the fastest accelerating motorcycle in production. The H2B and H2C had the steering damper repositioned to the left. In 1972, the H2, as well as the 350 cc S2 Mach II, had a race tail that held the taillight, and had a small storage space. ==Motorsport competition==

The American Motorcyclist Association (AMA) introduced its first official road racing category for production class motorcycles as a support class in 1975, which served as the precursor to the AMA Superbike Championship. An H2 Mach IV motorcycle ridden by Yvon Duhamel won the Production Class at the 1975 Pocono National, marking the last time that a two-stroke motorcycle won a production class race at an AMA road racing event. Kawasaki developed a racing derivative of the H2 called the Kawasaki H2R. ==See also==