RK's MS 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 efficiently. 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. Weight: 0.78 KG Max CC Rating: 125cc Street Master Link Type: CLIP Chain Length: 120 Fits: Honda CR80R 1990-1991 1993-2002 CRF150R SMALL WHEEL 2007-2018 NBC110 2013 Kawasaki KX80 1981-1982 1985-1987 KX85 Small Wheel 2001-2022 Suzuki RM80 1986-1988 Yamaha YSR50 1987-1992