1 Fitment: Our motorcycle air filter is designed for improving the throttle response, perfect replacement for GPZ1100 1983-1984; Replacement for KZ1000 LTD 1977-1980; Replacement for KZ1000 POLICE 1978-1981; Replacement for Z1 900 1973-1975; Replacement for KZ1000A 1977-1980; Replacement for KZ1000E 1979-1980; Replacement for KZ1000D 1978; Replacement for KZ900A 1976-1977; Replacement for KZ900B LTD 1976. 2 Wide Compatibility: The bent 45 degree air filter is designed and manufactured for a variety of applications and is used on most motorcycles. 3 Outstanding Design: Using the organ mesh design, and the double layer steel mesh filters impurities more effectively and provides cleaner air. 4 Performance Improvement: Our air cleaner improves throttle response and adds more horsepower, and the double steel mesh with tapered style provides excellent braking force. 5 Extensively Tested: Laboratory tested to ensure excellent stability and filter effect,which can withstand high pressure thus offering a longer service life, and with adjustable fixture for quick installation.