Shimano GRX RD-RX717-SGS Di2 Wireless Rear Derailleur - 12-Speed Long Cage Shadow ES BLK CheckoutSpec= 27.2 x 400mm Shell is constructed with ABS

Shell is constructed with ABS and durable multi-colored graphics

MAXhit headset bearings are designed to press directly into your bicycles headtube

Oversized anodized 6061 T6 aluminum construction is ultralight corrosion-resistant and incredibly durable

Olive Weight 80g

even against corrosion

Shimano GRX RD-RX717-SGS Di2 Wireless Rear Derailleur - 12-Speed Long Cage Shadow ES BLK CheckoutSpec= 27.2 x 400mm Shell is constructed with ABSThe Shimano GRX RX717 Di2 Wireless rear derailleur paired with a 10 51t cassette (cassette sold separate) gives gravel riders 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 structure