The Shimano GRX RD-RX400 10-speed rear derailleur keeps shifting silent and uninterrupted when riding on rough terrain.
- A 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 only with 10-speed ST-RX400, ST-4700, ST4720, ST-4725, ST-RS405 and SL-4700 shift levers
- Rear Derailleur Mount Type: Shimano Rear Direct Mount , 10×1 Standard
- Drivetrain Speeds: 10
- Cage Length: Long
- Chain Wrap Capacity (teeth): 41 teeth
- Largest Cog: 36
- Color: Black
- Weight: 303 g
- Rear Der/Shifter Compatibility: Shimano Road