525 ZVM-X2 ChainTwisting action of the X-Ring increases its sealing performance and its four contact points minimizes power lossZVM-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 horsepowerZVM-X Series’ Direct Energy Transfer, born from our experience in MotoGP, means greater stretch resistance under loadZVM-X chain is a great chain for high powered street bikes but may also be utilized on adventure bikes