520so Drive Chain Steel 520 X 120

Rk’s traditional round o-ring chain is a convenient blend of performance and affordability.So’s o-ring is constructed from nitrite butadiene to seal in lubrication and deliver smooth power with minimal seal ring drag or loss of horsepower.520so chains are suitable for low to mid-range cc motorcycles that came from the factory with sealed chains.520so can be used for both on street and off-road up to 400ccs.520so is available only in natural finish.