Premium manufacturer front sprocket, rear sprocket and a precut Regina chain make a convenient kit for the dealer or consumer. Sprockets are made of high-quality steel and have OEM gearing. 530 ZRP2 Drive Chain. Specifically designed for application on high-powered bikes, these chains are able to offer exceptional performance thanks to the patented Z-rings. Assembled 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.