Through Authenticate 
Full chain cover for Max.: 38T with long RC .
Slimfit from YF, a low maintenance and less drag solution for the ultimate chain-cover.
The Slimfit from YF offers the ultimate solution for an minimalistic looking chain-cover . It is made out of high durable materials for low maintenance. Compare to similar German products, the Slimfit have much lower resistance on the chain, because of the 2 frame mountings that prevent the cover from dragging on the chain.
