Enhanced chain security and quieter shifting for gravel riding. With an integrated chain stabilizer, Shimano GRX RD-RX822 12-speed rear derailleurs feature an integrated chain stabilizer that delivers quieter shifting and more secure chain management in rough terrain. The chain tensioner has an ON/OFF switch for easy wheel removalRD-RX822-GS rear derailleur with medium cage is compatible with 10-45t, 12-speed Shimano MTB cassettes, designed to keep you in the optimal cadence through rough terrain
RD-RX822-SGS rear derailleur with long cage 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
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Interchangeable, replaceable GS/SGS derailleur cage
Shadow RD+ design, combined with the adjustable chain stabilizer, 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
Series: Shimano GRX 12-speed
Top Sprocket Max: 10T/Min: 10T
Low sprocket: Max. 45T/Min. 45T (medium cage); Max. 51T/Min. 51T (long cage)
Total capacity: 35T (medium cage); 41T (long cage)
Compatible Chain: HG 12-speed
Recommended Cassette: CS-M8100-12/CS-M7100-12, 10-45T (short cage); CS-M8100-12/CS-M7100-12, 10-51T (long cage)
Pulley Teeth: 13T
Rear Speeds: 12 speed
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