The Shimano Dura-Ace 9100 11-Speed Cassette carries on in Dura-Ace tradition, mixes the highest grade materials with highly-refined manufacturing processes. The resulting cassette is the lightest produced by Shimano, and the best in terms of shift performance. Shimano uses a blend of titanium (for the 5 largest sprockets) and alloy for light weight and durability. Shimano offers five different Dura-Ace level cassette options, including a new 11-30T cassette, which is the lowest offered in the top-level group. The following cassettes are available: 11-25T, 11-28T, 11-30T, 12-25T, and 12-28T.
Shimano Dura-Ace R9100 11-Speed Cassette
$249.99 – $269.99