DID Enduro Chain - Made in Japan

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520ERV3 for Enduro and Desert Racing
D.I.D's 520ERV3 is the Enduro and Desert Champion Low Weight, Low Friction X-Ring

520VT2 and 520VX2 For Enduro and Trail riding

Half the Power Loss (Compared with Normal O-Ring)

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 compressed points that increase friction. The twisting action of the X-Ring minimizes power loss.
X-Ring is a U.S.A. Registered Trademark of D.I.D; Daido Kogyo Co. Ltd. Japan

1.5 to 2 TImes Longer Wear Resistance (Compared with Normal O-Ring)

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 



  1. Joining Links NOT interchangeable between upgraded 520VX2 and the former 520VX
  2. KM500R to used to rivet ZJ conn link for 520VX2, 520VX2 replaces 520VX and 520VM