The Shimano GRX ST-RX810-LA is a left-side hydraulic brake lever designed specifically for gravel riders running a front brake and a mechanical dropper post. Unlike standard STI levers, the "LA" model features an integrated cable-actuated dropper lever, allowing seamless dropper post control from the hoods — a major advantage when descending or transitioning between terrain. It pairs with Shimano’s GRX hydraulic calipers and offers the same comfortable ergonomics and textured lever surface as the rest of the RX810 series. Clean, functional, and purpose-built, it’s an ideal solution for gravel setups that value simplicity and control.