Shimano GRX RD-X812 Rear Derailleur 11 Speed Long Cage ClutchThe Shimano GRX RD-X812 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. This derailleur is compatible with 1x drivetrains only. The low sprocket maximum is 42t and the top sprocket max is 11t. The adjustable Shimano RD+ chain stabilizer prevents chain slapping and drops. The 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. Weighs 267g.192790448886
