SHIMANO GRX RD-RX817 DI2 Shadow Plus Long Cage Rear Derailleur 1x11-Speed

SHIMANO GRX DI2 RD-RX817 Long Cage Shadow Plus Rear Derailleur 11-speed

The Shimano GRX Di2 RD-RX817 rear derailleur features an integrated chain stabilizer to keep the shifting smooth and precise over a variety of terrain.

SEIS (Shimano Electronic Intelligent System)
Adjustable chain stabilizer prevents chain slapping and drops
Switch stabilizer ON/OFF to match the terrain
Gravel-tuned clutch tension
Direct Attachment (Direct Mount Compatible)

Speed: 1x11-Speed
Shifter Compatibility: Shimano Di2
Shift Mechanism: Electronic (Wired)
Max. Tooth: 42T
Min. Tooth: 11T
Chain Wrap Capacity: 31T
Cage Material: Aluminum
Chain Retention: Shadow Plus
Color: Black
Weight: 318g

Original Shimano parts guarantee that all components work perfectly for optimum performance and maximum safety and longevity.