Chain kit EK - Silver chain 520 SRO, O-ring, CHK front sprocket SUPERSPROX, CHK rear sprocket SUPERSPROX STEALTH for YAMAHA WR 450 F 2003-2006

This economic chain kit features sealed chains meeting strict Japanese quality standards. It offers a reliable solution at an affordable price, without compromises in overall quality or safety.

Chain EK SRO

O-Ring Race Chains
The ‘SRO’ series chains offer a value-priced sealed O-Ring chain that won’t compromise on quality or durability. Chains include lightening holes on the inner plate, heat treated steel, and a high level of craftsmanship.

The SRO series chains offer a value-priced O-ring chain that will not compromise on quality or durability. Features include lightening holes,high-tech heat-treated steel aloys and al the exact same quality and craftsmanship that EK puts into their entire product line.

EK Chain manufacturing was at the forefront of chain sealing technology and design, being one of the first to market with an O-ring seal design and production in the early 1970’s. The EK O-ring was even used as the genuine production chain on the iconic Kawasaki Z1. Greatly improves chain life compared to unsealed option.

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 Catalogue EK
PDF EK CATALOG