Shimano BR-RX400 GRX Hydraulic Disc Brake Front — Precision Gravel Braking with Robust Control

The Shimano BR-RX400 Front Hydraulic Disc Brake is purpose-built for gravel and adventure cyclists who demand reliable, consistent braking performance on diverse and challenging terrains. As part of Shimano’s GRX lineup, this brake embodies a blend of advanced hydraulic engineering and rugged design, ensuring exceptional control and safety on long rides and unpredictable surfaces.

Featuring a flat mount design, the BR-RX400 provides a streamlined, secure installation on compatible forks, minimizing weight and enhancing frame integration. The included adaptable bracket supports both 140mm and 160mm rotors, with a factory setup for the larger 160mm rotor, delivering superior heat dissipation and braking power crucial for extended descents and technical sections.

At the heart of the system lies Shimano’s efficient hydraulic mechanism paired with L03A resin brake pads equipped with cooling fins. These fins optimize thermal management, reducing the risk of overheating and brake fade during intense or prolonged braking. The pads maintain a quiet, smooth engagement while offering durable wear resistance—ideal for the variable conditions gravel riders face.

The BR-RX400 excels in modulation and stopping force, providing riders the confidence to precisely control speed and stability whether navigating loose gravel, steep slopes, or wet roads. Its robust construction withstands the rigors of off-road use, while Shimano’s attention to detail ensures straightforward maintenance and easy pad replacement.

Engineered for performance, durability, and ease of use, the Shimano BR-RX400 Hydraulic Disc Brake Front is the trusted choice for riders pushing the boundaries of adventure cycling, combining innovative technology with practical design to keep you in command on every journey.