Chain kit D.I.D Chain - Silver chain 520 ZVM-X, X-ring (X, NX, QX, XS), CHK front sprocket SUPERSPROX, CHK rear sprocket SUPERSPROX STEALTH for HONDA XR 250 R 1984-1985

This chain kit is designed for street and racing motorcycles over 1000 cc with high torque and power, or where maximum strength and chain lifespan are required. The kit consists of carefully matched components from leading global manufacturers.

Chain D.I.D. ZVM-X

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)

Supersprox Front Sprocket

Supersprox countershaft sprockets are factory-team spec parts (used in WSBK, MXGP, and Rally) made from ultra-durable, carbon-impregnated SCM-435 (18HGT) steel for maximum strength. They feature a lightened design with radial holes or slots, an ultra-hard surface layer to reduce chain friction, a black oxide coating to prevent corrosion, and self-cleaning grooved teeth on off-road models to extend chain and sprocket life.

Supersprox Stealth Rear Sprocket

Supersprox Stealth Bi-Metal Rear Sprockets feature a patented combination of steel teeth and an aluminum core. This design delivers 3× the lifespan of aluminum sprockets while being up to 30% lighter than all-steel alternatives. By reducing friction, they extend chain kit longevity, enhance bike performance and appearance, and are available in various colors to fit 99% of street and off-road motorcycles.

PDF D.I.D catalogue