The Shimano GRX RX820 groupset embodies Shimano's commitment to creating the ultimate riding experience for gravel and off-road enthusiasts. It combines power, precision, and ergonomics—specifically designed for the demands of gravel riding.

 Note: Supplied without chain.
 Smooth and precise shifting: mechanical 12-speed system for reliable performance under all conditions.

 Ergonomic design: reduces pressure on the hands and improves control thanks to the non-slip surface.
 Optimized for curved handlebars: delivers confidence and comfort on technical terrain.

 Crankset
 2x12 configuration: reliable setup with 48T-31T chainrings.
 Gear range: Compatible with 10-45T and 10-51T cassettes.
 Crank lengths: available in 170mm, 172.5mm and 175mm.

 Front derailleur
 Shimano GRX RX820 front derailleur (brazed): ensures precise and stable shifting with double cranksets.

 Improved cable routing with smooth shifting under load.
 Suitable for tires up to 42 mm wide.
 Rugged design: resistant to mud, dust and vibration.

 Rear derailleur
 Integrated clutch: keeps the chain stable on rough terrain.
 Simple maintenance switch: simplifies wheel changes.

 Compatible with 10-51T Micro-Spline cassettes.

 Groupset contents
 Shifters + hydraulic brake calipers (front and rear)
 Crankset 48-31T
 Front derailleur
 Rear derailleur
 Cassette 11-34T (Shimano 105/GRX CS-R7101)
 Brake discs 140 mm & 160 mm (RT-MT800)
 Inner cables for brake system and gear cables, no outer cables