Shimano GRX RD-RX827-SGS Di2 Wireless Rear Derailleur - 12-Speed Long Cage Shadow ES BLK Model-Blinder Peace Rear For all standard 6 V

For all standard 6 V / 3 W hub dynamos

Weights:   30T • 65g  |  32T • 69g

The design with angled bearings also prevents the creaking that is common with angle headsets that feature a spherical design

Heavy Duty 4140 CroMo Steel and die cast aluminum body

Shimano GRX RD-RX827-SGS Di2 Wireless Rear Derailleur - 12-Speed Long Cage Shadow ES BLK Model-Blinder Peace Rear For all standard 6 VThe Shimano GRX RX827 Di2 Wireless rear derailleur paired with a 10 51t cassette (cassette sold separate) gives riders and racers the speed range and robustness to pursue any gravel challenge. With built in automatic impact recovery an impact deflecting shape and solid pulleys this derailleur stands up to hard impacts and still retains its lightning quick shifting performance. Fully wireless shifting built for rough gravel terrain A wide link