Shimano GRX RX400 Disc Brake Set For. Rear - Black

The Shimano GRX RX400 Rear Disc Brake Set delivers quiet, consistent stopping power and confident modulation for gravel and adventure bikes. It combines a robust BR-RX400 2-piston flat-mount caliper with Shimano mineral-oil hydraulics for a smooth feel, easy service via One Way Bleeding, and the Easy Hose Joint System. This ensures seamless integration with ST-RX400 levers and Ice Tech pads, keeping your rear wheel controlled on long descents, loaded bikepacking routes, and all-weather commutes.

- The Shimano GRX RX400 rear brake set provides strong, predictable power with refined modulation tailored for gravel riding.
- The BR-RX400 2-piston flat-mount caliper offers stable, quiet performance across wet, dusty, and rough terrain.
- Shimano mineral oil hydraulics keep lever feel smooth and reliable while simplifying routine maintenance.
- One Way Bleeding speeds up air purging, making servicing quick, clean, and consistent.
- The Easy Hose Joint System streamlines hose installation and routing for tidy builds and effortless replacements.
- Compatibility with Ice Tech pads improves heat management for reliable braking on extended descents and heavy loads.
- Designed to integrate seamlessly with ST-RX400 levers and the broader Shimano GRX groupset for a cohesive setup.
- The caliper’s flat-mount standard fits modern gravel and road frames and pairs perfectly with Shimano Center Lock rotors.
- This rear disc brake upgrade is ideal for riders seeking Shimano GRX RX400 reliability for gravel racing, bikepacking, and all-weather commuting.

Specifications
Brand: Shimano
Model: GRX RX400
Type: Disc brake set
Position: Rear
Weight: 124g
Piston: Resin
Color: Black