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Cue Design from Shimano Dura Ace line, the new Shimano Ultegra R8000 11-speed cassette provides optimal performance and durability, Smooth Shifting, and de beaucoup d Espace entreposer D gearing, for the whole at a great price.Features: 11-speed cassette available in an 11 – 30 Teeth, 11 – 32T to 14 – 28 wide gearing trickle down technology of Shimanos Dura Ace lead