Shimano CS-R8000 11-SPEED Cassette Now with more gear options, the Shimano CS-R8000 11-SPEED Cassette is set to provide you with a wider array of options for your preferred type of riding. It utilizes nickel-plated steel cogs for corrosion resistance and provides the same high performance you look for in the Dura Ace series but at a slight weight penalty. Features High-performance gear combinations provide superior rider choice 11-25T, 11-28T, 11-30T, 11-32T, 12-25T, 14-28T | Shimano | Ultegra Cs-R8000 11Sp Cassette 11-30T