Seller notes

BikeMaster 520 BMXR Chain 112 Links Natural Product Details Ideal OE replacement Q4 sealed chain (Q4 seal-ring chain) offers 1.5 to 2 times longer wear resistance than regular O-ring chainsEach refined component, designed with computer analysis, provides higher tensile strengthSpecially controlled heat treatment means tougher material and more durabilityQ4 seal ring and reinforced pin and roller provide superior wear resistance, higher impact resistance and fatigue strengthQ4 seal ring offers le...

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