Shimano GRX ST-RX825 Di2 Shift/Brake Lever 2x 12-Speed

The Shimano GRX RX825 Di2 Dual Control Lever is designed for riders who want fast, precise, and fully wireless shifting control across gravel and mixed-terrain environments. Built as part of Shimano’s next-generation GRX Di2 ecosystem, it combines refined ergonomics, expanded customization options, and dependable long-range electronic performance to support demanding off-road riding.

The RX825 lever has been shaped specifically for the realities of gravel riding, where comfort and control over long hours matter just as much as shifting performance. Raised hood profiles and a reshaped ergonomic body improve hand positioning, especially when paired with flared handlebars commonly used on gravel bikes. A textured surface and anti-slip brake lever coating enhance grip security in wet, dusty, or high-vibration conditions, helping maintain confidence when the terrain becomes unpredictable. A dedicated third gravel-specific button is positioned for easy access, allowing riders to control key functions without changing hand position.

At the heart of the system is Shimano’s wireless Di2 shifting platform, which delivers fast, accurate, and effortless gear changes with minimal rider input. The RX825 also introduces FRONT SHIFT NEXT functionality, allowing front derailleur control through a simplified single-button approach. One press shifts up, another shifts down, streamlining operation and reducing cognitive load on technical terrain or during high-effort riding.

Customization is a major strength of the system. The lever is compatible with up to three satellite shifter options (sold separately), allowing riders to place shift controls wherever they are most convenient, such as the tops, drops, or aero extensions. This adaptability makes it easy to fine-tune cockpit setup for endurance gravel events, racing, or adventure riding.

Power is supplied by two compact CR1632 coin cell batteries per lever, offering an extended service life of approximately three to four years under normal use. This long-lasting design supports a clean, cable-free cockpit with minimal maintenance requirements, making it ideal for riders who prioritize simplicity and reliability over long seasons of use.

Overall, the RX825 delivers a refined balance of ergonomic comfort, wireless precision, and deep customization, making it a strong foundation for modern gravel and mixed-terrain builds.

The Shimano GRX RX825 Di2 Dual Control Lever is a wireless electronic gravel control system designed for precise shifting, ergonomic comfort, and highly customizable cockpit integration.