D.I.D's High Performance X-Ring® for Enduros & Desert Racing
D.I.D X-RING® IS SUPERIOR TO OTHER TYPES OF O-RING DESIGNS

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.
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
D.I.D's 520VT2 and 520VX2 X-Ring chains provide excellent low friction performance

CHAIN
DISP. C.C.
MAIN FEATURE
520ERV3 MAX. 750 C.C. ENDURO CHAMPION
520ATV MAX. 750 C.C. ATV ENDURO X-Ring®
* The maximum c.c. displacement is based on original manufacturers
recommended chain size. Consult your owners manual.
CHAIN
DISP. C.C.
MAIN FEATURE
520VT2 MAX. 500 C.C. Narrow X-Ring®
520VX2 MAX. 750 C.C. GREAT VALUE X-Ring®
* The maximum c.c. displacement is based on original manufacturers
recommended chain size. Consult your owners manual.