The Sealed Chain Solution for Vintage Motorcycles RK SV530UWR was developed for Vintage Motorcycles to replace the OE 530 Non-Sealed chain, featuring RK's technology of Ultra Thin Seal, UW-Rings, make possible to design a sealed chain with similar chain width of a non-sealed chain. RK SV530UWR comes with silver colour coating on the Inner, outer plates, Pin and Roller protecting the chain from beign rusty. Converting non-Sealed to a sealed chain results to extended chain life and minimum chain adjustment after initial stretch