Shimano GRX RD-RX812 Rear Derailleur Stabilizer Unit

Shimano GRX RD-RX812 Rear Derailleur Stabilizer Unit Description: This Shimano GRX RD-RX812 Rear Derailleur Stabilizer Unit consists of replacement internal parts of the GRX RD-RX812 stabilizer unit. Rear derailleur stabilizers help to reduce chain slap and instances of chain drop when tackling rough terrain. If your derailleur has some miles on it or the stabilizer has become damaged, this part will restore the functionality of your derailleur. Features: Includes the stabilizer unit and the cam unit P-cover, P-Axle unit, and other hardware sold separately