NEW Shimano GRX RD-RX817 Rear Derailleur - 11-Speed, Long Cage, Black, Clutch onsale The 1x specific X-Horizon derailleur

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

The Tange-Seiki Passage 1" threaded headset is constructed of steel and features 5/32" ball bearings

Perforated sides for venting

The special layup and shape of the Arch CB7 deflects up to 10mm radially to soak up speed-robbing impacts

NEW Shimano GRX RD-RX817 Rear Derailleur - 11-Speed, Long Cage, Black, Clutch onsale The 1x specific X-Horizon derailleurThe 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