Shimano GRX RD-RX717-SGS Di2 Wireless Rear Derailleur - 12-Speed, Long Cage, Shadow ES, Black tubeless-tape Don't know what that is

Don't know what that is

Filling out their line of full-suspension mountain bikes

OChain E Active Brose/SRAM Crank Spider UPC: 739988403984

FTWR White/Core Black/Red Flat Shoe UPC: 197611017876

Shimano GRX RD-RX717-SGS Di2 Wireless Rear Derailleur - 12-Speed, Long Cage, Shadow ES, Black tubeless-tape Don't know what that isThe 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