High-performance ZR chains with patented Z44 seal Z-ring sections Z-ring flexes when assembled, creating a spring effect that guarantees seal will not diminish over time Z-ring section also provides enhanced chain flexibility Features high alloy steel plates and pins, solid bushings and rollers and shot-peened plates, pins and rollers Pre-stretched to enhance performance Clip type and rivet type links included. CHAIN 520ZRE X 120 LINKS
