Shimano GRX, with its gravel specific ergonomics, optimized gearing options, rugged reliability, and quiet and stable drivetrain, sets itself apart from the rest of the component world

The SHIMANO GRX rear derailleur, featuring the SHIMANO SHADOW RD+ technology, provides a quiet and secure shifting experience on mixed terrain, with an integrated chain stabilizer mechanism and ON/OFF switch for the chain tensioner.

Features:

- Silent and uninterrupted rear shifting on rough terrain
- Adjustable chain stabilizer prevents chain slapping and drops
- SHIMANO SHADOW RD+
- Smooth and reliable mixed surface shifting
- Toggle clutch ON/OFF to match the terrain
- Switch stabilizer ON/OFF to match the terrain
- Gravel-tuned clutch tension
- Compatible with current road DUAL CONTROL LEVER
- Maximum front difference: 17T
- Top sprocket: Max. 11T/Min. 11T
- Low sprocket: Max. 34T/Min. 30T
- Total capacity: 40T