Shimano GRX BL-RX825 Left Rear Hydraulic Disc Brake Lever with BR-RX820 Caliper | Gravel-Specific Braking System with Hose (Pre-Bled)
Enhance your gravel or adventure bike with the Shimano GRX BL-RX825 Hydraulic Disc Brake Lever paired with the BR-RX820 rear caliper, a high-performance braking system built specifically for the demands of gravel riding, bikepacking, and all-terrain endurance cycling. Designed with gravel-specific ergonomics, enhanced control, and rugged reliability, this left-hand rear brake system delivers superior stopping power and modulation in every riding condition.
With Shimano’s proven Hydraulic Disc Brake (Hydro Disc) technology, this kit includes a pre-bled hose, ensuring fast and easy installation. The textured anti-slip lever and raised hood design improve grip, prevent hand fatigue, and maintain control on long or technical rides.
- Gravel-Specific Ergonomics – Engineered for off-road comfort and control with an improved grip profile
- Shimano GRX BL-RX825 Left Brake Lever – Left-hand lever for rear brake with anti-slip texture and ergonomic shaping
- Shimano BR-RX820 Rear Caliper – Powerful 2-piston hydraulic disc caliper optimised for gravel and mixed-terrain use
- Pre-Bled Hydraulic Hose Included – Simplifies setup with out-of-the-box readiness
- Raised Hood Head Design – Prevents hand misalignment and slippage during aggressive riding or rough descents
- Enhanced Brake Modulation – Smooth, powerful, and responsive braking across all surfaces
- Durable Construction – Built to withstand the vibrations, dust, and rigors of gravel and adventure riding
Ideal For:
- Gravel cyclists looking for enhanced brake performance and control
- Adventure and endurance riders needing durable, fatigue-reducing braking systems
- Riders upgrading or building Shimano GRX-equipped bikes with flat-mount disc brakes
- Bikepackers and off-road explorers seeking all-weather braking reliability
Experience confident, responsive braking on every terrain with the Shimano GRX BL-RX825 Left Rear Hydraulic Disc Brake Lever and BR-RX820 Caliper, built to handle the unique demands of gravel and off-road cycling with precision and power.