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: 120 Fits: Kawasaki ZZR400 1990-1992