SHIMANO GRX RD-RX822 1x12-SPEED REAR DERAILLEUR

The Shimano GRX RD-RX822 is a 12-speed rear derailleur engineered for gravel and mixed-terrain riding.

Its integrated Shadow Plus chain stabilizer reduces bounce and noise on rough surfaces, delivering smooth, precise shifts when you need them most. The low-profile design combines lightweight cold-forged aluminium construction with exceptional durability. Compatible with 12-speed Hyperglide+ chains, it supports cassettes up to 10-51T, making it ideal for single-chainring setups that demand versatile gearing across unpredictable terrain.

Features

• Silent and uninterrupted rear shifting on rough terrain
• Adjustable chain stabilizer prevents chain slapping and drops
• SHIMANO SHADOW RD+
• Smooth and reliable mixed surface shifting
• Gravel-tuned clutch tension
• Compatible with current road DUAL CONTROL LEVER
• RD-RX822-GS
  
  • 45T max cog size
  • Works with 12-speed 10-45-teeth cassette
  • Better ground clearance (shorter cage)
• RD-RX822-SGS  
  • 51T max cog size
  • Works with 12-speed 10-51 teeth cassette

Specification

• Use: Gravel, Cyclocross
• Group: GRX
• Model: RD-RX822
• Mount: Direct attachment (Conventional)
• Technology: Shadow RD+
• Gradations: 
  • GS-Type 1x12-speed (10-45 cassette)
  • SGS-Type 1x12-speed (10-51 cassette)
• Compatible chain: 12-speed HG
• Max. teeth large sprocket: 45T (GS) / 51T (SGS)
• Min. teeth large sprocket: 45T (GS) / 51T (SGS)
• Max. teeth small sprocket: 10T
• Min. teeth small sprocket: 10T
• Max. Front Difference: 0T
• Total Capacity: 34T (GS) / 41T (SGS)

Pulley cage

• GS medium
• SGS long

Material

• Aluminium
• Steel
• GFRP

Colour

• Black

Weight

• Approx. 290g/GS
• Approx. 288g/SGS

Contents

• 1 x Shimano GRX 1x12-speed RD-RX822 Rear Derailleur

We reserve the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colours, materials and pricing. Due to supply chain issues, compatible parts may be substituted at any time without notice.

Weights are based off pre-production products at time of publication. Weights may vary in final production.