The Kawasaki Z1300 is a standard motorcycle unusual for its large-displacement 1,300 cc straight-six engine made by Kawasaki from 1979 to 1989.

The inline-six engine is a piston engine with six cylinders arranged in a straight line along the crankshaft. A straight-six engine has perfect primary and secondary engine balance, resulting in fewer vibrations than other designs of six or fewer cylinders.