520 ZVM-X - Drive Chain - 120 Links - Natural - Retains all the low friction, high performance characteristics of the standard X-ring while providing 40% greater wear resistance and better overall chain life - For use on superbikes - Originally comes with rivet connecting link - Twisting action of the X-Ring increases its sealing performance and its four contact points minimizes power loss - ZVM-X Series’ Direct Energy Transfer, born from our experience in MotoGP, means greater stretch resistance under load - ZVM-X chain is a great chain for high powered street bikes but may also be utilized on adventure bikes - ZVM-X Series utilizes D.I.D's patented X-Ring seal and has greater strength than the VX Series and is designed for heavyweight motorcycles with tremendous torque and horsepower