Shimano GRX RD-RX817 Rear Derailleur Stabilizer Unit

Shimano GRX RD-RX817 Rear Derailleur Stabilizer Unit Description: The Shimano GRX RD-RX817 Rear Derailleur Stabilizer Unit consists of the replacement parts for the internals of the rear derailleur's stabilizer unit. 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, this part will restore the functionality of your derailleur. Features: Specifically designed for the GRX RD-RX817 rear derailleur Includes the stabilizer unit and the cam unit P-cover, P-Axle unit, and other hardware sold separately