Shimano GRX RD-RX822 12 Speed Rear Derailleur Shadow+, max 51T for Single

Enhanced chain security and quieter shifting for gravel riding

With its integrated chain stabilizer, the SHIMANO GRX rear derailleur delivers quieter shifting and more secure chain management in rough terrain. The RD-RX822-SGS is compatible with 10-51T, 12-speed SHIMANO MTB cassettes, meaning you’ll never run out of gears even on the steepest jeep road or high mountain singletrack ascent. And the chain tensioner has an ON/OFF switch for easy wheel removal.

Features:
- Silent and secure rear shifting on rough terrain
- Adjustable chain stabilizer prevents chain slap and drops
- SHIMANO SHADOW RD+
- Smooth and reliable shifting on mixed surfaces
- ON/OFF stabilizer switch matches terrain
- Top sprocket: Max. 10T/Min. 10T
- Low sprocket: Max. 51T/Min. 51T
- Total capacity: 41T
- Interchangeable, replaceable GS/SGS derailleur cage