DID 525 ERV Series X-Ring Chain [obs]

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.

• High performance, lightweight, low-friction chains designed exclusively for racing.
• Special oil seals produce 50% less friction and 50 - 100% longer wear life than standard O-ring chain.
• Features gold and black color plates.
• Maximum rated displacement: 750cc.
• Average tensile strength of 8,270 pounds.

Half the Power Loss - Compared with Normal O-ring chains, D.I.D's patented X-Ring construction reduces friction by twisting between the side plates instead of being squashed. Normal O-rings and other makers' modified O-rings have squashed points that increase friction. The twisting action of the X-Ring disperses the pressure and minimizes power loss.

1.5 to 2 Times Longer Wear Resistance - Compared with Normal O-ring chains, the X-Ring's four contact points greatly increase its sealing performance. This keeps the dirt out and the lubrication in much better than any other O-ring. X-Rings have the greatest wear resistance of any other type of O-ring or non-O-ring chain.