RD-RX400 - Shimano GRX - Rear Derailleur - Shimano Shadow RD+ - 10-speed

With an integrated chain stabiliser 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 an On/Off switch for the chain tensioner.

Features:

• Adjustable chain stabiliser prevents chain slapping and drops
• Switch stabiliser On/Off to match the terrain
• Gravel-tuned clutch tension
• Maximum front T difference: 16T
• Silent and uninterrupted rear shifting on rough terrain
• Low sprocket: Max. 36T/Min. 30T
• Total capacity: 41T
• Smooth and reliable mixed surface shifting
• Compatible with current 10s road dual control lever
• Wide range front gearing