SHIMANO GRX RD-RX812 Rear Derailleur SHADOW RD+ 11-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.

FEATURES
Silent and uninterrupted rear shifting on rough terrain
Adjustable chain stabilizer prevents chain slapping and drops
SHIMANO SHADOW RD+
Smooth and reliable mixed surface shifting
Switch stabilizer ON/OFF to match the terrain
Gravel-tuned clutch tension
Compatible with current road DUAL CONTROL LEVER
Top sprocket: Max. 11T/Min. 11T
Low sprocket: Max. 42T/Min. 40T
Total capacity: 31T

PRODUCT SPECIFICATIONS
MODEL NO    RD-RX812
SERIES    GRX 11-speed
Color    Series color
Average weight    267 g
B-Axle_Hollow axle   
Cable adjuster   
Compatible chain    HG-EV 11-speed/HG-X11
Direct attachment (Conventional)   
Fluoric coated link bushings    4
Low sprocket_Max.    42T
Low sprocket_Min.    40T
Pulley_G pulley bearing   
Pulley_Sunken type pulley bolt   
Pulley_Teeth    11T
Pulley_T pulley bearing   
Rear speeds    11
Top-Normal spring type_SHADOW RD+   
Top sprocket_Max.    11T
Top sprocket_Min.    11T
Total capacity    31T