Shimano GRX RD-RX812 1x11-Speed Rear Derailleur (42T Max)

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The Shimano GRX FD-RX812 rear derailleur features an integrated chain stabilizer to keep the shifting smooth and precise over a variety of terrain.


  • Adjustable chain stabilizer prevents chain slapping and drops
  • Switch stabilizer ON/OFF to match the terrain
  • Gravel-tuned clutch tension


Weight: 267g
Capacity: 31T
Max Low: 42T
Speed: 1x11

This product was added to our catalog on August 13, 2019