The Kawasaki Kz1000 or Z1000 is a motorcycle made in Japan by Kawasaki, manufacturing commenced in September 1976 for the 1977 model year. The Z1000A1 was an upgraded model to replace the 1976 Kawasaki KZ900 (Z900), which in turn replaced the Z1 launched in 1972 in the Z series. It has an inline-four cylinder engine and a 5-speed transmission, in a 'one down and four up' configuration. Producing about 90 hp, it was one of the fastest production motorcycles of the era. The police model continued in production until 2005. Model differences 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 of 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