julio 22, 2026
Designed for11-speed Di2 drivetrains. GenuineShimano GRX RD-RX815 rear derailleur. Series: GRX. Designed for1x and 2x Shimano GRX Di2 applications. Shimano GRX RD-RX815 rear derailleur. Rear Derailleur Mount Type: Shimano Rear Direct Mount / 10x1 Standard.