Shimano GRX RD-RX827-SGS Di2 Wireless Rear Derailleur - 12-Speed Long Cage Shadow ES BLK description-rebuild service kit with bladder and repels water and grime

and repels water and grime

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The simultaneous full engagement of the ratchets provides a larger contact patch than pawl hubs and thus a more balanced load distribution resulting in higher reliability

internal routing

Shimano GRX RD-RX827-SGS Di2 Wireless Rear Derailleur - 12-Speed Long Cage Shadow ES BLK description-rebuild service kit with bladder and repels water and grimeThe 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