Shimano GRX 810 Rear Derailleur 11-speed
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Shimano GRX 810 Rear Derailleur 11-speed
Code: RD-RX81
Shimano GRX 810 Rear Derailleur - 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. 
  • Adjustable chain stabilizer prevents chain slapping and drops
  • Switch stabilizer ON/OFF to match the terrain
  • Gravel-tuned clutch tension
  • Compatible with current road Dual levers
  • Low sprocket: Max. 34T/Min. 30T
  • Total capacity: 40T
  • Smooth and reliable mixed surface shifting
HerbertReally like how this shifts.
DickEasy to install and adjust. The clutch that helps prevent chain slap is a welcome improvement.
ChristopherExcellent - runs through the cassette so sweetly! Absolutely no problem to set up.
Mr silverFast quick delivery. Great shifting
Mr NICOLLOrdered this rear mech for my gravel bike. Upgrade from 105. Noticed the improved shifting immediatly, . Excellent on or off road. The clutch lever is simple & keep the chain taught on the trails. Best gravel rear mech out there.
Mr RickabyGreat addition to my travel bike, easy to install, smooth shifting and no more chain slap!
DonUpgraded from an Ultegra derailleur on my gravel bike for the clutch mechanism. Works great and no more chain slap on the frame. Weighs a few grams more but not a problem.