Shimano Dura-Ace 9100 11-Speed Cassette 12-25T

The Shimano Dura-Ace 9100 11-Speed Cassette 12-25T is Shimano’s top-level cassette for a reason. A premium construction with the upper five sprockets being constructed from titanium and the spider being constructed from carbon fibre reinforced polymer and aluminium makes this the cassette of choice for riders looking for the best possible performance.