Sprockets are made of high-quality steel and have OEM gearing. Chain is Regina's high-performance Z-ring series with gold outer plates and Z40 sealing rings, which dramatically improves performance and wear life; includes both clip- and rivet-type masterlinks. 520 conversion kits include all the above, but the rear sprocket is aluminum rather than steel, which in some applications reduces the chain + sprocket weight by as much as 2.5 lb. The item "Regina Chain 5ZRP/112-KHO012 520 ZRD Chain and Sprocket Kit 520 Conversion Kit" is in sale since Wednesday, November 14, 2018.This item is in the category "eBay Motors\Parts & Accessories\Motorcycle Parts\Drivetrain & Transmission\Chains, Sprockets & Parts". The seller is "jawzys" and is located in Hinckley, Ohio. This item can be shipped worldwide.