Shimano GRX Di2 Rear Derailleur RD-RX817

Designed for riding on rough roads, through gravel and mud, to be able to carry on in comfort, stress-free, to wherever you want, to allow you to achieve that unique sense of accomplishment. The first groupset designed for Gravel riding Explore beyond. Introducing SHIMANO GRX
.Shimano Shadow RD+ for DI2 (11-speed).Adjustable chain stabilizer prevents chain slapping and drops.Switch stabilizer ON/OFF to match the terrain.Gravel-tuned clutch tension.Silent and uninterrupted rear shifting on rough terrain.Smooth and reliable mixed surface shifting.Compatible with current road DUAL CONTROL LEVER.Top sprocket: Max. 11T/Min. 11T.Low sprocket: Max. 42T/Min. 40T.Total capacity: 31T