RK 520 SO Standard O-Ring Chain Thermal Flex The honeycomb open mesh structure

The honeycomb open mesh structure of the material yields maximum heat and moisture exchange for optimal cold-weather comfort

All purpose and weather use

Designed for the professional motocross racer

(Supercross & Motocross)

Shields hands from roost

RK 520 SO Standard O-Ring Chain Thermal Flex The honeycomb open mesh structureRK 520 SO Standard O Ring Chain RK offers the best O ring chains in the industry. All RK O ring chains are constructed of hi carbon alloy steel for strength and durability. RK utilizes Nitrite Butadiene O rings to seal in lubrication and deliver smooth power with no O ring drag or loss of horsepower. Features Features a flat contact patch that holds the lubrication in place, resulting in a smooth transfer of power Three times the wear life of a