Shimano Deore RD-M5120 Rear Derailleur Stabilizer Unit

Shimano Deore RD-M5120 Rear Derailleur Stabilizer Unit Description: The Shimano Deore RD-M5120 Rear Derailleur Stabilizer Unit consists of the replacement internals for the stabilizer unit on select Shimano rear derailleurs. The rear derailleur stabilizer helps to reduce chain slap and the chances of dropping the chain when tackling the rough stuff. If your derailleur has some miles on it or the stabilizer has become damaged, installing this part will restore a rear derailleurs stability and performance. Features: Includes the stabilizer internals and the cam unit P-cover, P-Axle unit, and other hardware sold separately See compatibility tab for full list of compatible derailleurs