Renthal’s R4 SRS Road chain is a specially developed sealed ring chain utilizing Renthal’s Self Regulating Seal (SRS) technology to increase the service life of the chain in road applications. The special SRS ring is pre-loaded during assembly creating a spring effect. As the chain wears, conventional o-rings and x-rings lose their seal, however the Renthal SRS ring has the ability to unload itself during use keeping a tighter seal against the side plates. This offers increased longevity as the specially formulated grease remains trapped around the critical pin and bushing area longer while also keeping dirt, water and other contaminants out.
SRS ring technology enhances chain flexibility and offers smoother operation than standard o-ring chains.
All R4 SRS Road chains feature high alloy steel plates and pins, solid bushings and rollers, shot peened side plates for added strength and gold side plates.
Special quad riveting process and thicker outer plates increases overall strength.
Chains come pre-stretched from the factory so less adjustment is needed during initial break in.