D.I.D is the number one motorcycle chain in the world. D.I.D chains are used by factory races teams from all manufacturers in race series everywhere. Revolutionary sealed chain for motocross and enduro racing. Breaks down the concept of the original motocross chain (non O-ring) and adds the benefits of an X-ring. More lightweight and longer chain life. Now 2% lighter and has a 15% longer lifespan, all while maintaining the tensile strength. The clear choice of Top AMA Teams. Average tensile strength of 8,440 pounds. Wear life index: 3,500 (standard chain = 100). Rated up to a maximum displacement of 500cc. Weight (kgs/100 links) = 1.46 (3.22 pounds).