Regina RX3 Series 135RX3/00D Chain 520RX3 X 120 Links The ultimate off-road chain, developed to withstand the severe stresses of off-road riding, yet lightweight with maximum performance Featuring specially shaped bushings and chromized pins for reduced elongation and maximum wear resistance Larger diameter alloy carbon steel pins and thicker plates, shot-peened to provide increased tensile strength and better fatigue resistance Extended bushings and solid rollers provide improved durability Inner links are beveled to improve sprocket engagement, even in the worst off-road conditions