The Shimano GRX RD-RX400 10-speed rear derailleur keeps shifting silent and uninterrupted when riding on rough terrain.
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.
- Smooth and reliable mixed surface shifting
- Silent and uninterrupted rear shifting on rough terrain
- Shadow RD+ chain stabilizer prevents chain slapping and drops
- The gravel-tuned clutch tension helps to provide smooth and reliable mixed surface shifting
- Stabilizer can be turned on/off to match terrain
- Compatible with Shimano 10-speed road Dual Control Levers
- Compatible with current 10s road Dual Control Lever
- Wide range front gearing — Maximum front T difference: 16T
- Top sprocket: Max. 11T/Min. 11T
- Low sprocket: Max. 36T/Min. 32T
- Total capacity: 41T
