Driven EVO-SPEC steel sprockets are lighter than standard steel and stronger than aluminum. Front sprocket is made of case hardened steel and drilled with holes to reduced overall weight and mass.
All RK Sealed chains feature heat treated hi-carbon alloy steel components, giving unrivalled wear life. Seamless rollers that allow the chain to run freely between the teeth of the sprocket and reduce chain vibration and shouldered bushings allow the patented XW seal to retain 72% more lubricant than an old timer O-ring seal. All RK seals are made from an advanced Nitrile Butadiene composite for maximum performance and wear life. All RK sealed-ring Chains come with RK's exclusive 20,000 mile warranty.
*Attention California and Russian customers there might be around a one week delay in shipping. Please contact us for more info.
Put the best on your bike not some cheap no name set!