Shimano GRX 810 Rear Derailleur 11-speed
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Shimano GRX 810 Rear Derailleur 11-speed
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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
Herbert Really like how this shifts.
Dick Easy to install and adjust. The clutch that helps prevent chain slap is a welcome improvement.
Christopher Excellent - runs through the cassette so sweetly! Absolutely no problem to set up.
Mr silver Fast quick delivery. Great shifting
Mr NICOLL Ordered 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 Rickaby Great addition to my travel bike, easy to install, smooth shifting and no more chain slap!
Don Upgraded 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.