Chain kit D.I.D Chain - Zlat chain 520 ERVT, X-ring (X, NX, QX, XS), CHK front sprocket SUPERSPROX, CHK aluminium CHK rear sprocket SUPERSPROX for YAMAHA YZ 250 1990-1993

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. ERVT

Strength. Chain Life. Lightweight. Slim Profile. The 520ERVT X-Ring sealed chain is arguably our most well-rounded, do it all chain! Part of our Exclusive Racing Series, the 520ERVT is designed with off-road rally style racing in mind for its long chain life, lightweight design, and great strength.
With its slim profile, this chain is also a great option for the Honda L series of bikes.

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 Aluminium rear sprocket

Used in racing since 1959, Supersprox Aluminum Rear Sprockets are the ultimate choice for maximum weight savings. Precision CNC-machined from world-class 7076-T651 aluminum, they feature a special tooth design and mud-clearing grooves to extend chain and sprocket life, finished with high-quality durable anodizing in various colors.

PDF D.I.D catalogue