Shimano GRX RD-RX820 12-Speed Rear Derailleur Max 45T
With its integrated chain stabilizer and medium cage, the GRX RD-RX820 12-Speed Rear Derailleur Max 45T delivers quieter shifting, better ground clearance and more secure chain management in rough terrain. The RD-RX822-GS is compatible with 10-45T, 12-speed SHIMANO MTB cassettes, 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
- Top sprocket: Max. 10T/Min. 10T
- Low sprocket: Max. 45T/Min. 45T
- Total capacity: 35T
- Interchangeable, replaceable GS/SGS derailleur cage
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