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
• Gravel-tuned clutch tension provides smooth and reliable mixed surface shifting
• 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: 11
• Weight: 255
• Color: Black
• Chain Wrap Capacity (teeth): 40
• Largest Cog: 34