The Shimano GRX 11-speed rear derailleur has an integrated chain stabilizer mechanism, that provides a quieter experience, shifting security and precision on mixed terrain. For rides on smooth surfaces, the derailleur features an ON/OFF switch for the chain tensioner. The Shimano Shadow RD+ adjustable chain stabilizer provides silent and uninterrupted rear shifting on rough terrain.

• Adjustable Shimano RD+ chain stablizer prevents chain slapping and drops
• Gravel-tuned clutch tension provides smooth and reliable mixed surface shifting
• Compatible with Shimano road Dual Control Levers
• Compatible with Shimano LinkGlide and HG 11-speed chains
• Toggle clutch on/off to match the terrain
• For 1x and 2x drivetrains
• Color: Black
• Largest Cog: 34
• Rear Derailleur Mount Type: Shimano Rear Direct Mount , 10x1 Standard
• Chain Wrap Capacity (teeth): 40
• Cage Length: Long
• Rear Der/Shifter Compatibility: Shimano Road
• Drivetrain Speeds: 11
• Weight: 255