Shimano GRX Shadow + RX400 10 Speed Rear Derailleur

The Shimano GRX Shadow + RX400 10 Speed Rear Derailleur features an integrated chain stabilizer mechanism providing a quieter experience and both shifting security and precision on mixed terrain. Thanks to the addition of Shimano's Shadow + clutch system, the RX400 derailleur features an ON/OFF switch for the chain tensioner.

Features

• Silent and uninterrupted shifting on rough terrain
• Smooth and reliable mixed surface shifting
• Adjustable chain stabilizer (Shadow +) prevents chain slapping and drops
• Switch stabilizer ON/OFF to match the terrain
• Gravel-tuned clutch tension
• Compatible with current 10s road dual control levers
• Wide range front gearing

Specifications

• Maximum front tooth difference: 16T
• Top sprocket: Max. & Min. 11T
• Low sprocket: Max. 36T & Min. 32T
• Total capacity: 41T
• Weight: 313g