Experience unparalleled speed and control on the road with Shimano's high-performance Dura-Ace groupset, designed specifically for di2 electronic shifting. The Dura-Ace RR MECH D/Ace Di2 R9250 12spd features a reliable and efficient mechanical system that seamlessly integrates with your existing gear shifters.

With its advanced 24-speed internal gear hub, you'll enjoy effortless shifting and minimal maintenance. The precision-engineered gears are designed to provide smooth and consistent performance, even at high speeds. Plus, the di2 electronic shifting system ensures precise control and accurate gear changes, giving you complete confidence on the road.

The Shimano Dura-Ace RR MECH D/Ace Di2 R9250 12spd is the perfect choice for cyclists who demand the best from their equipment. Its impressive performance features make it an ideal upgrade for riders who are looking to take their cycling experience to new heights. Whether you're a seasoned competitor or simply seeking to improve your overall performance, this high-end groupset has everything you need to dominate the road.