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 wearlife. 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 Index: 600. Maximum Tensile in lbs/Ft: 7700lbs/ft. Masterlink Type: Clip. Weight in Lbs per 100 Links: 4.08lbs. Max cc: 400cc Street / 400cc Off-Road. 19.2 Links per foot. 15.875mm Pin to Pin center. Your original purchase of RK sealed-ring chain is warranted to be free of defects in material and workmanship for 20,000 miles of street riding or one-year of off-road use. There is absolutely no warranty of any kind for an RK Chain used in ANY racing competition.
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-...
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