K&N premium oil filters for powersports vehicles utilize an innovative, highly efficient synthetic-blend filtration media designed to be compatible with synthetic, petroleum-based, and blended oils, including the high concentrations of synthetic racing oils. The heavy-duty canister is engineered to be exceptionally durable, and a 17mm welded hex nut can be used for quick and easy filter removal. Engineered to support exceptionally high flow rates while providing outstanding protection from harmful engine contaminants, each filter is specifically designed to withstand the service intervals recommended by vehicle manufacturers, and is protected by the K&N 1-Year Limited Warranty. Vehicle Fitment: 1983-1988 KAWASAKI ZN1300 Voyager; 1979-1983 KAWASAKI KZ1300; 1982 KAWASAKI KZ750M CSR Twin; 1978-1982 KAWASAKI Z750 LTD; 1977-1981 KAWASAKI KZ1000A/J; 1978-1981 KAWASAKI KZ1000C/P Police; 1977-1981 KAWASAKI Z1000A; 1977-1980 KAWASAKI KZ1000B/K LTD; 1978-1980 KAWASAKI KZ1000D Z1R; 1979-1980 KAWASAKI KZ1000E Shaft; 1980 KAWASAKI KZ1000G Classic; 1980 KAWASAKI KZ750G LTD Twin; 1979-1980 KAWASAKI Z1000 ST; 1976-1979 KAWASAKI KZ750 Twin; 1978 KAWASAKI Z1R; 1976 KAWASAKI Z750; 1973-1975 KAWASAKI Z1; 1974-1975 KAWASAKI Z1000