Shimano Takavaihtaja GRX RD-RX812 11v.

Features - GRX RD-RX812 1x11-speed Rear Derailleur

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

Product features

Use: Gravel, Road, Cyclocross
Group: GRX
Model: RD-RX812
Mount Type: Direct Mount
Gear front: 1-speed
Gear rear: 11-speed
Compatible Chain: HG-EV 11-speed, HG-X11
Max. teeth large sprocket: 42T
Min. teeth large sprocket: 40T
Max. teeth small sprocket: 11T
Min. teeth small sprocket: 11T
Total Capacity: 31T