Shimano GRX RD-RX812 Rear Derailleur

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.

BENEFIT

Silent and uninterrupted rear shifting on rough terrain

FEATURE

Adjustable chain stabilizer prevents chain slapping and drops

TECHNOLOGY

SHIMANO SHADOW RD+

BENEFIT

Smooth and reliable mixed surface shifting

FEATURE

Switch stabilizer ON/OFF to match the terrain

FEATURE

Gravel-tuned clutch tension

BENEFIT

Compatible with current road DUAL CONTROL LEVER

BENEFIT

Top sprocket: Max. 11T/Min. 11T

BENEFIT

Low sprocket: Max. 42T/Min. 40T

BENEFIT

Total capacity: 31T