Shimano Grx Di2 Rd-rx717 1x12s Rear Derailleur 12s Black

Shimano Grx Di2 Rd-rx717 1x12s Rear Derailleur. Conquer any gravel challenge with the SHIMANO GRX RX717 rear derailleur. Engineered for the roughest terrain, this 12-speed wireless derailleur unleashes a massive 10-51T gear range for ultimate speed and climbing power. Its robust design features Automatic Impact Recovery and a skid plate to absorb hard impacts while maintaining lightning-quick, stable shifting thanks to SHIMANO SHADOW ES. The protected, swappable battery system adds convenience, ensuring you are always ready to ride with confidence and precision. The GRX RX717 rear derailleur, paired with a 10-51T 12-speed cassette, 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. It also features the same battery featured on GRX RX827, XTR M9250, XT M8250, and DEO