The Shimano GRX 11-speed rear derailleur has an integrated chain stabilizer mechanism, that provides a quieter experience, shifting security and precision on mixed terrain. For rides on smooth surfaces, the derailleur features an ON/OFF switch for the chain tensioner. The Shimano Shadow RD+ adjustable chain stabilizer provides silent and uninterrupted rear shifting on rough terrain.
- Toggle clutch on/off to match the terrain
- For 1x and 2x drivetrains
- 34t low sprocket max / 11t top sprocket max
Product Specifications
Check all technical specifications