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Shimano GRX RD-RX400 Rear Derailleur
Description
For rides on smooth surfaces, the derailleur features and ON/OFF switch for the chain tensioner.
- GRX 10 speed rear derailleur for double cranks
- Adjustable chain stabilizer prevents chain slapping and drops
- Gravel-tuned clutch tension can be toggled ON/OFF to match the terrain
- Maximum front difference: 16T
- Low sprocket: Max. 36T/Min. 30T
- Top sprocket: 11T
- 303g