The Shimano GRX BR-RX400 + ST-RX600 shift lever ensures high performance on rough surfaces. The GRX BR-RX400 brake caliper features a flat mount design. The GRX brake impresses with excellent heat management and easy installation.

The GRX ST-RX600 brake/shift lever with Dual Control technology has a non-slip surface and its shape adapts to the ergonomic demands of gravel riding. Smooth shifting performance is inherited from Shimano’s top-tier groupsets.

• RX600 lever:
• RX400 caliper:

Technologies:

• STI Dual Control (DCL): DCL combines braking and shifting functions, allowing easy operation. Better ergonomics are more important for high standards than increased reach. The shifters provide the stability of Shimano’s MTB technology and operate with such precision and smoothness that you can shift both front and rear gears with one finger.
• Optislick: Optislick cables feature a minimal and uniform electrically coated layer that improves cable routing efficiency and offers excellent corrosion resistance.
• One-Way Bleeding: This process ensures quickly and easily that no air enters the hydraulic system. Shimano has optimized the flow of brake fluid throughout the system to prevent trapped air bubbles.
• Ice-Tech: Brake heat during prolonged use, such as on long descents, reduces braking performance. Shimano has introduced Ice-Tech brake rotors and pads to create cooling technology that ensures consistently high braking power.