A high performance non o-ring 520 chain with excellent impact load resistance, designed specifically to withstand the stress found in off road applications. This chain is the choice where a combination of high strength, light weight and maximum power transfer are important considerations  The R1 Works Chain has the following features:     Shot-peened alloy steel side plates for high tensile strength and maximum impact load resistance  Chamfered inner links to reduce the chance of chain derailment  Extended bushings to reduce friction between outer and inner link plates, maximising power output  Chromised bearing pins for excellent resistance to wear  Gold colour side plates help prevent corrosion  Most perfectly matched chain for Renthal chainwheels allowing maximum power at the rear wheel.This also extends the life of both the chain and chainwheels