EK Chains 520 O-Ring Chain SR250, TT250, TT350, TT500, XT250, XT500, XT550 The EK Chains 520 O-Ring Chain is a value-priced O-ring chain that doesnt compromise on quality or durability, with such features as solid bushings, solid rollers and high-tech heat-treated steel alloys. All EK Chains motocross chains utilize our CRH pin treatment which provides an extremely hard outside coating and softer inside to increase strength and reduce chain wear. Exclusive to EK Chains, the Chormium Carbide pin surface coating also offers superior impact and shock absorption while reducing oxidation caused by natural elements. Features: For use on 650cc max road and off-road bikes High quality O-Ring chains seals in lube and keeps water and mud out Solid rollers and anti-kink bushings increase chain longevity Japanese made chain with quad staked riveting of pins into side plates Tensile strength: 8000 lbs. Colour: Gold Links: 120 Weight: 1980g