Shimano GRX 1X11 Rear Derailleur

SHIMANO GRX REAR DERAILLEUR - RD-RX812 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 an ON/OFF switch for the chain tensioner. The RD-RX812 rear derailleur is compatible with MTB cassettes with a 42T low sprocket max. FEATURES: a For 1x drivetrains a Adjustable chain stabilizer prevents chain slapping and drops a Switch stabilizer ON/OFF to match the terrain a Gravel-tuned clutch tension a Silent and uninterrupted rear shifting on rough terrain a Smooth and reliable mixed surface shifting a Compatible with current road DUAL CONTROL LEVER a Top sprocket: Max. 11T/Min. 11T a Low sprocket: Max. 42T/Min. 40T a Total capacity: 31T