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
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
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