Some of the significant differences between the KZ900 and the KZ1000 include that the 1000 has a heavier crankshaft for less engine vibration, smoother acceleration and a larger displacement as a result of increasing the cylinder bore from 66mm to 70mm. The 1000 received a rear disc brake. There were various configurations of specifications and assembly, such as having the choice between chain-drive and shaft-drive. The cruiser version LTD was assembled in Nebraska and sold in the United States and Canada. Kawasaki swapped the traditional 4-4 exhaust (available on
Z1 and KZ900) for the 4-2 Jardine exhaust (which came standard on the KZ900B) on the LTD and quiet and restrictive muffler on the 1000 A1 and A2 as shown in the top photo in this article. The KZ1000 came with either a chain drive or shaft drive in 1979 and 1980 named ST and SHAFT, KZ1000E1 and E2. The frame on the KZ1000 was a conventional featherbed (duplex cradle) design, but was not significantly changed in over 30 years of production in terms of basic geometry. There were changes to frame construction with the use of thicker frame tubes in the MkII models (1979/80) to improve frame rigidity. The 1980 Kawasaki Z1000H was the first mass-produced fuel-injected motorcycle in the world and also Kawasaki's first fuel injected motorcycle. It was based on the KZ1000A3/A4 Mk.II frame and body work, with a unique black/gold/white colour scheme and gold mag wheels . There were only 1000 examples of the Z1000H made for the global market. The Z1000H was manufactured for 3 months only, during March/April/May 1980 and was a test-bed for the incoming new 1981 fuel-injected model, the GPz1100B1. In the US market, the Z1000G "Z-1 Classic", based on the LTD frame and body work, also featured the same fuel injection system used on the Z1000H. The 1981 Kawasaki Z1000J debuted with Kawasaki's new "J" motor with displacement down to the drop in displacement from 1015cc to 998cc was in order to comply with the new rule for superbike racing-which stipulated a maximum of 1000cc. For the 1982 model year, Kawasaki introduced the KZ1000R1 Eddie Lawson Replica (ELR); based on the KZ1000J2. The 1983 model was designated KZ1000R2 with cams and a cylinder head from the 1982 GPz1100B2, boosted power from 102 to 104 at 8500 rpm. The bike had a limited run of 750, and was named after the
Eddie Lawson 1981-1982 Superbike. It had a claimed rear wheel HP @ 8,500rpm and
dry. Aside from the 1982-2005 KZ1000P Police motorcycle, the model was discontinued in 1984, in favor of Kawasaki's liquid-cooled bike, the Ninja
GPZ900R. == Wheels and tyres ==