Open box but unused The D.I.D ZVM-X Series utilizes our patented X-Ring seal and has greater strength than the VX Series and is designed for heavyweight motorcycles with tremendous torque and horsepower. The twisting action of the X-Ring® increases its sealing performance and its four contact points minimizes power loss. The ZVM-X Series™ Direct Energy Transfer, born from our experience in MotoGP, means greater stretch resistance under load. The ZVM-X chain is a great chain for high powered street bikes but may also be utilized on adventure bikes. Max CC: 1,200cc Tensile Strength: 8,745 lbs Weight (100L): 3.59 lbs Seal: X-Ring Chain Life Index: 3500 Pin Length: 0.83" Pin Diameter: 0.206" Inner Plate Thickness: 2.2 Outer Plate Thickness: 2.2