GRX
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 GRX - Rear Derailleur - 34T max low sprocket - 11-speed
With an integrated chain stabilizer mechanism, the SHIMANO GRX derailleur provides a quieter experience and shifting security and precision on mixed terrain. For rides on smooth surfaces, the derailleur features and ON/OFF switch for the chain tensioner. The RD-RX810 rear derailleur is compatible with road cassettes with a 34T low sprocket max.
. 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. 34T/Min. 30T