NEW Shimano GRX RD-RX817 Rear Derailleur - 11-Speed, Long Cage, Black, Clutch onsale Proprietary stretch materials grip your

Proprietary stretch materials grip your phone on all 4 corners

Left shifter has a trim position when front derailleur is in the large chainring

The 1x specific X-Horizon derailleur design provides excellent chain control and shifts well regardless of cassette size

Bike-to-bike and bike-to-vehicle contact prevented by no-sway cages

5 cm: 5'10"–6'2"

NEW Shimano GRX RD-RX817 Rear Derailleur - 11-Speed, Long Cage, Black, Clutch onsale Proprietary stretch materials grip yourThe Shimano GRX 11 speed Di2 rear derailleur integrates electronic shifting with silent and uninterrupted rear operation on rough terrain. An adjustable Shimano Shadow RD+ clutch prevents chain slapping and drops. Operates with Shimano Di2 for digital electronic shifting Gravel tuned clutch tension provides smooth and reliable mixed surface shifting Rear Derailleur Mount Type: Shimano Rear Direct Mount Rear Der Shifter Compatibility: Shimano Road Di2