Rk Excel

Mru features rk’s proprietary ultra thin seal, u-rings, where the thickness of the seal is less than 50% of the most common o-ring seal.This allows rk to design a sealed chain with the weight of a...

415 sprint racing chain series features rk’s proprietary ultra thin u seal rings.U-rings have a seal thickness less than 50% of the common o-ring seal, making it possible to design a sealed chain...

Exw was designed to handle atv swingarm movement and increased torque stresses and wears 1.7 times longer when compared to o-ring chains.Exw chains also feature special thermal crack resistant...

Rk’s traditional round o-ring chain is a convenient blend of performance and affordability.So’s o-ring is constructed from nitrite butadiene to seal in lubrication and deliver smooth power with...

520xru was designed for professional motogp racing.Featuring uw-ring seals, xru is a lightweight professional racing chain.The uw seals reduce friction while maintaining optimal horsepower delivery...