Details

SHIMANO GRX REAR DERAILLEUR — 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 an ON/OFF switch for the chain tensioner. The RD-RX812 rear derailleur is compatible with MTB cassettes with a 42T low sprocket max.

FEATURES:
• For 1x drivetrains
• 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
• Top sprocket: Max. 11T/Min. 11T
• Low sprocket: Max. 42T/Min. 40T
• Total capacity: 31T

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