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Shimano GRX

Shimano GRX RD-RX822 12-Speed Rear Derailleur - SGS - Shadow RD+ -Black 1X

SKU RDRX822SGS
£62.28 RRP £124.99 −50%

Earn 62 points with Bikeparts+ to spend on your next orderHow it works

Enhanced chain security and quieter shifting for gravel riding

With its integrated chain stabilizer and medium cage, the SHIMANO GRX rear derailleur delivers quieter shifting, better ground clearance and more secure chain management in rough terrain. The RD-RX822-SGS is compatible with 10-51T, 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. 51T/Min. 51T 
  • Total capacity: 35T
  • Interchangeable, replaceable GS/SGS derailleur cage

Shimano GRX Rear Mech Information

Same groupset

Complete your Shimano GRX groupset

Shop all GRX →
Shifters
Shimano GRX ST-RX820 Hydraulic Disc Brake Dual Control STI lever - 12-speed - Right Hand BIKEPARTS+
Select size
2 sizes
Shimano GRX
Shimano GRX ST-RX820 Hydraulic Disc Brake Dual Control STI lever - 12-speed - Right Hand£154.75£249.99−38%
Front Derailleurs
Shimano GRX FD-RX810 GRX front mech; 11-speed double; down pull; braze-on BIKEPARTS+
One size
Shimano GRX
Shimano GRX FD-RX810 GRX front mech; 11-speed double; down pull; braze-on£32.60£54.99−41%
Chainset
Shimano GRX FC-RX610 Chainset 46 / 30 Double - 12-Speed - 2 Piece Design - 165mm BIKEPARTS+
Select size
4 sizes
Shimano GRX
Shimano GRX FC-RX610 Chainset 46 / 30 Double - 12-Speed - 2 Piece Design - 165mm 5.0 · 1 review £87.45£179.99−51%
Cassettes
Shimano GRX CS-HG500 10-Speed Road Cassette Sprocket - 11/25T BIKEPARTS+
Select size
4 sizes
Shimano GRX
Shimano GRX CS-HG500 10-Speed Road Cassette Sprocket - 11/25T£19.99£34.99−43%
Brake Calipers
Shimano GRX BR-RX820 GRX calliper; flat mount; with adapter for 140/160 mm; front BIKEPARTS+
One size
Shimano GRX
Shimano GRX BR-RX820 GRX calliper; flat mount; with adapter for 140/160 mm; front£54.00£79.99−32%
Brake Levers
Shimano GRX BL-RX812 Sub Brake Lever - Right Hand BIKEPARTS+
Select size
2 sizes
Shimano GRX
Shimano GRX BL-RX812 Sub Brake Lever - Right Hand£59.00£64.99−9%
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