Its engine displacement of produced at 6,800 rpm. The engine was entirely new and not a bored-out 500. With larger displacement as well as less aggressive porting and ignition timing, the H2 "750" had a wider power band than the "500" H1, though Brown said it was still "barely more practical" than the smaller predecessor, because Kawasaki had "done little" to address chassis problems, and so the bike was still prone to speed wobble. The gain over the "500" H1 put the H2's output well ahead of its close rivals, the air-cooled four-stroke Honda CB750 and the liquid-cooled two-stroke Suzuki GT750.