Ready for racing, the superb Shimano R8000 cassette is equipped with 11 steel sprockets which are more than capable of handling all the intensity that comes with all-day road bike events. Using HG-EV technology, this version gives you a rider-tuned gear combination and cadence management. This means you’ll benefit from its optimal gear ratio within your Ultegra groupset, which perfectly suits your riding discipline, so you can blast up to speed in seconds and maintain the edge over your competitors.