Shimano Ultegra 11-speed derailleur rollers

SHIMANO derailleur rollers for 11-speed transmission allow you to replace your worn rollers and thus maintain great fluidity in your transmission. Compatible with all Shimano 11 speed derailleurs, these rollers are sold in sets of 2. For optimal transmission, it is advisable to change your rollers regularly (every 8000 km) in order to prolong the life of your chain and the smoothness of your chain. your transmission.