Shimano Black Shimano GRX RX822 Shadow+ GS rear derailleur 2025

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.

• 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
• Total capacity: 41T
• Interchangeable, replaceable GS/SGS derailleur cage
• Compatible chain: HG 12-speed
• Mount: Direct attachment (conventional)
• Cable adjuster
• Total capacity: 41T
• Low sprocket: Max. - 51T, Min. - 51T
• Top sprocket: Max. - 10T, Min. - 10T
• Guide pulley bearing
• Tension pulley bearing
• Teeth: 13T
• B-axle: Hollow axle
• Average weight: 288