This 30 year old Kawasaki 750 cc three cylinder twostroke has been upgraded with a milled from solid enginecase. This new H2-EX enginecase pairs stock H2 parts like cylinders, crank and generator/ignition-unit with a GPZ/ZZR six-speed gearbox. Its a dream come true for twostroke enthusiasts around the world. It allows tuners to unleash the true potential of this big triple without having to worry about destroying stock gearbox. With this H2EX engine one can realy use the 120+ RWHP this unit is capable to develop.

The H2-EX enginecase is a first home grown product of EX-BilletEngines. Read on to learn more about details, reasoning and techniques involved.