The Shimano GRX 11-speed rear derailleur provides silent and uninterrupted rear shifting on rough terrain. An adjustable Shimano Shadow RD clutch prevents chain slapping and drops.

• Compatible with Shimano road Dual Control Levers
• GRX 11 speed rear derailleur for double cranks
• Gravel-tuned clutch tension provides smooth and reliable mixed surface shifting
• Toggle clutch on/off to match the terrain
• Total capacity: 40T
• Low sprocket: Max. 34T/Min. 30T