Shimano, GRX RD-RX817, Rear Derailleur, Speed: 11, Cage: GS, Grey

Description

* GRX Di2 11 speed rear derailleur for 1X cranks* Adjustable chain stabilizer prevents chain slapping and drops* Gravel-tuned clutch tension can be toggled ON/OFF to match the terrain* Low sprocket: Max. 42T/Min. 40T* Top sprocket: 11T