evo.com | Shimano Brakes Front and Rear > The Shimano GRX ST-RX810-LA Dropper Lever/Disc Brake Set works with your 1x gravel system by integrating a dropper remote into the left hand brake lever, should you run one. Add that to its solid Ice Tech hydraulic performance and you're looking at more ease of use, safety, and cockpit tidiness. Number of Pistons 2 ICE Tech Cooling System Caliper Material Aluminum Light Dropper Post Actuation Gravel Inspired Lever and Bracket Ergonomics | Shimano GRX ST-RX810-LA Dropper Lever/Disc Brake Set 2022 - OS | Aluminum