Shimano, GRX RD-RX815, Rear Derailleur, Speed: 11, Cage: GS, Grey

Description

* GRX Di2 11 speed rear derailleur for double cranks* Adjustable chain stabilizer prevents chain slapping and drops* Gravel-tuned clutch tension can be toggled ON/OFF to match the terrain* Maximum front difference: 17T* Total capacity: 40T* Low sprocket: Max. 34T/Min. 30T* Top sprocket: 11T