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

The Shimano Dura Ace 9100 11-Speed Cassette 12-25T is a super lightweight 11-speed HG-EV cassette with a rigid carbon and alloy carrier for excellent shifting. Shimano Dura Ace 9100 11-Speed Cassette Features 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 Close ratio gearing allows a more efficient use of energy through finer cadence control Largest sprockets are mounted on lightweight alloy and carbon carriers to reduce weight and increase rigidity 5 largest sprockets are made from titanium to reduce weight without sacrificing strength Sprockets are extensively cut away and drilled to further reduce weight without reducing rigidity Nickel-plated finish offers hard wearing resistance to corrosion Alloy cassette lockring For Super Narrow 11-speed HG-EV chains Average weight 175 grams for 11-25 tooth

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