Shimano GRX RD-RX717-SGS Di2 Wireless Rear Derailleur - 12-Speed Long Cage Shadow ES BLK MFPN=HWQASM00S1459S 52mm 45x45 lower bearing Color

52mm 45x45 lower bearing Color Matte Black Bearing Type Cartridge Crown Race 30 Defined Color Black S

Compatible with SRAM 12-speed and 13-speed groupsets including SRAM Red XPLR AXS

}Zipp Service Course Stem - 105mm 31

Frame Mount Width 41

Stealth C4 rubber outsole

Shimano GRX RD-RX717-SGS Di2 Wireless Rear Derailleur - 12-Speed Long Cage Shadow ES BLK MFPN=HWQASM00S1459S 52mm 45x45 lower bearing ColorThe 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