RK Racing Chain 520SO-140 Steel 140-Links O-Ring Chain with Connecting Link

On Sale Now! Free Shipping Included! Save 3% on the RK Racing Chain 520SO-140 Steel 140-Links O-Ring Chain with Connecting Link by RK Racing Chain at Race Review Online. MPN: 520SO-140. Hurry! Limited time offer. Offer valid only while supplies last. The 520SO is one of the best O-ring chains in the industry. 520SO chains feature heat treated hi-carbon alloy steel components with seamless rollers and shouldered bushings for strength and durability, and are fitted with O-ring seals. O-ring seals are made from an advanced nitrile butadiene composite for maximum performance and wear life. Nitrile butadiene O-rings seal in lubrication and deliver smooth power with no O-ring drag or loss of horsepower. Pin length in mm: 19.9mm. Maximum wear life


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