Shimano GRX 810 11-Speed Rear Derailleur
Offering silent, stable rear shifting on rough terrain, the gravel bike–specific Shimano GRX 810 11-speed rear derailleur is compatible with 1x and 2x drivetrains and 11- to 34-tooth cassettes.
- With a 40-tooth total capacity, the GRX 810 11-speed rear derailleur handles an 11-tooth top sprocket and 30- or 34-tooth low sprocket; maximum front difference of 17 teeth
- 11-speed SHADOW RD+ system features a clutch and chain stabilizer that can be switched on or off to match terrain
- Switch gravel-tuned clutch on to increase chain tension and reduce unwanted derailleur cage movement on rough surfaces (for easier rear wheel removal, switch clutch off)
- Switch adjustable chain stabilizer on to reduce chain slap, improve chain retention and make riding over uneven surfaces quieter
- Compatible with current road dual control (brake/shift) levers (not included)
- Designed for use with Shimano HG-EV 11-speed or HG-X11 chains (not included)
Imported.
View the Shimano GRX Product LineView all Shimano Rear Derailleurs| Best Use | Road Cycling |
|---|---|
| Derailleur Type | Rear |
| Cage Length | Short Cage |
| Max Rear Cog Size | 34T |
| Speeds | 11-speed |
| Weight | 255 grams |
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Works great with a wolftooth goatlink
Used this for a do-it-all touring/commuting/gravelling/bikepacking build for my partner. GRX 2x crankset (46/30) and a big ol' 11-46 cassette with a wolftooth goat link for a huge gear range. Once dialed in properly, can easily go through all the gears in both chainrings with no skips or rubbing. Immediately after finishing the build we went on a cross-Washington State six-day bikepacking trip over bumpy doubletrack and the clutch was, well, clutch! (Meanwhile my Tiagra was dropping my chain every day). So far, great mech!
Nice GRX Upgrade
Upgraded my Shimano 105 derailleur to GRX with 50/34 chain ring. Change was seamless and worked with existing 11-34 cassette. Give me the ability to use clutch on gravel.
New GRX works great
I wanted to be able to use an 11-40 cassette, and my ultegra derailleur looked up to the job but I got this GRX one just to be sure. It installed and worked flawlessly. I just finished a 750 mile ride over 10 days and had zero problems.