525 ZRP Chain And Sprocket KitPremium manufacturer front sprocket, rear sprocket and a precut Regina chain make a convenient kit for the dealer or consumerSprockets are made of high-quality steel and have OEM gearing525 ZRP Drive ChainSpecifically designed for application on high-powered bikes, these chains are able to offer exceptional performance thanks to the patented Z-ringsAssembled with high-alloy steel pins and plates, solid bushings and rollers, shot peening of plates, pins and rollers and pre-stressed for performance enhancing, assuring excellent resistance to mechanical stresses of the latest superbikes 525 ZRP Chain And Sprocket Kit Regina /12300397/