Shimano ST-5500 is a high-performance shifting lever compatible with Shimano's 105 series components. It offers precise and smooth shifting, allowing you to effortlessly change gears even under load. The ST-5500 features a comfortable and ergonomic design, reducing fatigue during long rides. It also includes an optical gear display, providing clear visual feedback of your current gear position. With its reliable construction and user-friendly operation, the ST-5500 is an excellent choice for road cyclists seeking enhanced shifting performance.