Shimano Dura-Ace CS-9000 11s Cassette
Rider-tuned means Dura-Ace works the way you want it. The 11-speed Shimano cassettes are available in a range of sizes including a wide-range 11-28 option - one cassette to use all year round. Smooth, fast shifting guaranteed.
Carbon mid spider carrier
Titanium sprockets (16T and bigger)
11-speed, Rider-tuned gear combinations 11-23T/11-25T/11-28T/12-25T/12-28T