With an integrated chain stabilizer, Shimano GRX RD-RX822 12-speed rear derailleurs feature an intergrated chain stablizer that delivers quieter shifting and more secure chain management in rough terrain. The chain tensioner has an ON/OFF switch for easy wheel removal.

• Shimano RD-RX822-SGS rear derailleur with long cage is compatible with 10-51t, 12-speed Shimano MTB cassettes, meaning youll never run out of gears even on the steepest jeep road or high mountain singletrack ascent
• Interchangeable, replaceable GS/SGS derailleur cage
• Shadow RD+ design, combined with the adjustable chain stablilizer, prevents chain slap and drops
• ON/OFF stabilizer switch matches terrain for smooth and reliable shifting on mixed surfaces
• Compatible with HG 12-Speed Chains