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. **ZVM-X and ZVM-X2 CONNECTING LINKS AREN'T INTERCHANGABLE** (Varying pin lengths) Max CC: 1,300cc Tensile Strength: 10,408 lbs Weight (100L): 4.65 lbs Seal: X-Ring Chain Life Index: 4,000 Pin Length: 0.913" Pin Diameter: 0.217" Inner Plate Thickness: 2.4 Outer Plate Thickness: 2.6