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: 124 Fits: Aprilia RS50 1999-2005 Honda CR85R Big Wheel 2005 2007 Kawasaki KX100 1991-2014 KX80 1998-2000 KX80 BIG WHEEL 1991-1997 Z125 PRO 2017-2020 Suzuki RM100 2003-2006