Shimano Dura-Ace CS-R9100 11-Speed CassettesCFRP/alloy spider arms and 5 titanium sprockets offer weight savings
| Range | 11-25, 11-28, 11-30 |
| Cogs | 11-12-13-14-15-16-17-19-21-23-25, 11-12-13-14-15-17-19-21-23-25-28, 11-12-13-14-15-17-19-21-24-27-30 |
| Cassette Body Type | Shimano HG 11/12-Speed Road |
| Drivetrain Speeds | 11 |
| Color | Silver/Gray |
| Defined Color | Silver |
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