KS Series: RK's KS series chains are low-cost non-sealed motorcycle chains featuring 4 side (Quad) rivet staked pins. When pins are quad-riveted they are stronger and more stabilized; which results in increased stress resistance due to high engine loads and makes the transmission of horsepower to the ground more efficient. As a result of the change to the 4 rivet staked pins the addition of solid bushings and the application of RK's new specially formulated coating; RK non-sealed chains now show a 40% increase in chain life! RK non-sealed chains perfect for low-displacement motorcycles that did not come from the factory with sealed chains. Master Link Type: Rivet Chain Length: 110 Fits: Ducati 650 SL PANTAH 1978-1986 900 GTS 1975-1979 Honda CB500 FOUR 1972-1973 CB750 1969 CB750C Custom 1980-1982 CB750F 1977-1982 CB750K 1970-1976 CB900F 1981-1983 Kawasaki Z440 1980-1988 Z440A LTD 1981-1983 Z440D LTD 1982-1984 Z550 1982-1990 Yamaha FZS600 Fazer 1998-2004 YZF600 Thundercat 1996-2003