bicycle pad resistance-Shimano Chain Tensionr,Alfine Ct-S500 Alfine,Black Alfine Chain Tensioner Shimano Chainguard

For single speed bikes with vertical dropouts
-20T max
-Perfect for SHIMANO ALFINE equipped bicycles, the double pulley chain tensioner can accommodate a front chainring difference of 16 teeth and sprockets sized 18 to 20 teeth.
-Available for Pickup within 2 to 1 businesses days