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