Experience the pinnacle of cycling performance with these Shimano Dura-Ace ST-R9170 Di2 Shift/Brake Levers, designed for serious road cyclists. These hydraulic brake levers are fully compatible with Shimano Di2 systems, ensuring seamless integration and superior shifting capabilities.Enhanced ergonomics provide unparalleled comfort, allowing you to focus on your ride without distractions.The updated button feel and layout guarantee precise shifting, making every gear change smooth and effortless.Shimano's Reach Adjust technology allows for an ergonomic brake and shift lever position, accommodating any hand size or rider preference. Elevate your cycling experience with these advanced levers, engineered for performance and comfort on every ride. Whether you’re ascending steep hills or racing against the clock, these levers provide the reliability and precision you need to conquer any challenge.