Shimano GRX RD-RX717-SGS Di2 Wireless Rear Derailleur - 12-Speed, Long Cage, Shadow ES, Black sdg but its rubberized logos and

but its rubberized logos and black design make sure you look good out there

and an additional 2mm of padding in the middle and nose

Clamp Diameter 31

the spokes have been modified to increase their strength without drastically increasing the weight

Designed to protect seals and extend time between rebuilds

Shimano GRX RD-RX717-SGS Di2 Wireless Rear Derailleur - 12-Speed, Long Cage, Shadow ES, Black sdg but its rubberized logos andThe 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