The D.I.D ZVM-X Series utilizes patented X-Ring seal and has greater strength than the VX Series and is designed for heavyweight motorcycles with high torque and horsepower. The twisting action of the X-Ring? increases its sealing performance and its four contact points minimizes power loss. Chain Size520Chain Type520 ZVMXColor/FinishGoldMaximum Engine Displacement (Street)1200 ccModelZVMX SeriesNumber of Links120Product NameDrive ChainSeal TypeX-RingTensile Strength38,9 kN (8745 lb)UnitsEachVendor part number4525516330251Weight1,63 kg/100 Links