Shimano Dura-Ace CS-9000 11S Cassette
Super lightweight 11-speed HG-EV cassette with a rigid carbon and alloy carrier for excellent shifting even under the most demanding gear changes. Hyperglide EV sprockets have a computer designed tooth configuration with contoured shift gates, resulting in a crisp smooth shift even under load and close ratio gearing allows a more efficient use of energy through finer cadence control
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