Chain kit D.I.D Chain - Zlat chain 520 MX, Non-sealed, CHK front sprocket SUPERSPROX, CHK rear sprocket SUPERSPROX STEALTH for YAMAHA YZ 250 1980-1981

This specialized chain kit is engineered for off-road racing. The components are optimized for low friction and high durability in demanding terrain, providing excellent resistance to impacts and mechanical wear.

Chain D.I.D. MX

The non-sealed 520MX boasts our highest rated tensile strength among non-sealed chains at 8,930 lbs. and properly handles the beating that chains take during tough, off-road races.
Trusted and used by teams and champions such as Troy Lee Designs/Red Bull GasGas, Red Bull KTM, 8X ATVMX champion, Chad Wienen, and more!
Because of its incredible strength, this is the go-to chain for riders across a multitude of racing disciplines, especially among the 450 class.

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