Designed for mixed-terrain riding, the Shimano GRX ST-RX825 Di2 Shifter & Disc Brake Caliper brings fast, accurate wireless shifting and braking to our favorite gravel bike with a clean cockpit design. The ergonomic levers feature a ribbed surface, raised hoods, and anti-slip coating to increase our control and comfort as we ride over rougher terrain, and the hood body is optimized for use with flared handlebars while keeping the gravel-specific third Di2 button.