Shimano GRX ST-RX825 Di2 Shift/Brake Lever BR-RX820 Brake Caliper

The Shimano GRX ST-RX825 Di2 Shift/Brake Lever with BR-RX820 Brake Caliper is a high-performance gravel control system designed for riders who demand precision, comfort, and adaptability across constantly changing terrain. Built around Shimano’s 12-speed wireless Di2 platform, it delivers fast, consistent shifting performance paired with refined hydraulic braking power, giving riders full confidence whether they are racing gravel events, exploring remote routes, or riding long mixed-surface endurance days.

The ST-RX825 lever is engineered specifically for gravel ergonomics. Raised hoods, a ribbed texture, and an anti-slip coating work together to provide secure hand placement in wet, dusty, or high-vibration conditions. The overall lever shape is optimized for use with flared handlebars, supporting a more natural wrist angle and improved control during long hours in the saddle. Shimano’s third-button layout remains integrated into the design, providing easy access to additional functions without compromising grip or stability.

A key feature of the RX825 system is FRONT SHIFT NEXT functionality, which simplifies front derailleur control by allowing a single button to handle both upshifts and downshifts. This reduces complexity during technical riding and allows other controls to be assigned to additional functions. For riders who want even more customization, the system is compatible with satellite shifters (sold separately), enabling shift controls to be placed in multiple positions across the cockpit for maximum flexibility.

The included BR-RX820 hydraulic brake caliper delivers strong, predictable stopping power with excellent modulation. Its 2-piston design provides a quick, controlled bite point while maintaining smooth braking feel across varied surfaces. A 10 percent wider pad clearance helps reduce the risk of brake noise caused by debris or rotor flex, making it especially well suited to gravel environments. Maintenance is also simplified thanks to Shimano’s one-way bleeding system, which helps ensure consistent performance and easier servicing over time.

Together, the lever and caliper system create a balanced blend of wireless shifting precision, ergonomic comfort, and dependable braking control. It is designed for riders who want a clean cockpit, advanced customization options, and reliable performance across all types of gravel and mixed terrain riding.

The Shimano GRX ST-RX825 Di2 Shift/Brake Lever with BR-RX820 Brake Caliper is a wireless 12-speed gravel system designed for precise shifting, refined braking performance, and highly adaptable cockpit control.