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Shimano GRX RD-RX812 Rear Derailleur

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SHIMANO GRX - Rear Derailleur - SHIMANO SHADOW RD+ - 42T max low sprocket - 11-speed

MODEL NO: 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 and ON/OFF switch for the chain tensioner. The RD-RX812 rear derailleur is compatible with mtb cassettes with a 42T low sprocket max.

-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

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