Wide range of gears and tight jumps? Why not have both? Our lightest and most durable cassette sets new standards in gear selection. Four different cassette options, including our first 10-30 and 10-36 RED cassettes, each provide reliable shifting ramps specifically designed for electronic shifting. Whether you're racing with a 10-28 or building an all-road setup with a 10-36, carefully chosen tooth jumps ensure you stay in the right gear. For example, when you’re out of the saddle on steep climbs or making finer adjustments to stay on the wheel of the rider in front as you approach a sprint.