The Shimano GRX RD-RX400 10-speed rear derailleur keeps shifting silent and uninterrupted when riding on rough terrain.
Specifications:
- Rear Derailleur Mount Type: Shimano Rear Direct Mount
- Rear Derailleur Mount Type: 10×1 Standard
- Rear Der/Shifter Compatibility: Shimano Road
- Cage Length: Long
- Drivetrain Speeds: 10
- Weight: 303
- Color: Black
- Chain Wrap Capacity (teeth): 41
- Largest Cog: 36