520 ZVM-X - Drive Chain - 120 Link - Black - Retains all the low-friction, high-performance characteristics of the standard X-ring while providing 40% greater wear resistance and better overall chain life - Designed for heavyweight motorcycles with tremendous torque and horsepower - ZVM-X Series is only available with a rivet connecting link, included with the chain - 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 - 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