Rear derailleur Shimano GRX RD-RX812 SH+ 1x11-speed

With an integrated chain stabilizer 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 and ON/OFF switch for the chain tensioner. The RD-RX812 rear derailleur is compatible with mtb cassettes with a 42T low sprocket max. Adjustable chain stabilizer prevents chain slapping and drops Switch stabilizer ON/OFF to match the terrain Gravel-tuned clutch tension Silent and uninterrupted rear shifting on rough terrain Smooth and reliable mixed surface shifting Compatible with current road DUAL CONTROL LEVER Weight: 267 g Cable adjuster Compatible chain: HG-EV 11-speed/HG-X11 Direct attachment (Conventional) Fluoric coated 4 link bushings Maximum smallest sprocket: 42T Minimum smallest sprocket: 40T Sunken type pulley bolt Pulley teeth: 11T Rear speeds 11 Top-Normal Spring Type SHIMANO SHADOW RD+ Maximum biggest sprocket: 11T Minimum biggest sprocket: 11T Total capacity: 31T