TheShimano CS-HG201 9-Speed Cassetteis a great value 9-speed cassette. Hyperglide sprockets have a computer designed tooth configuration with contoured shift gates, resulting in a crisp smooth shift even under load. Shimano CS-HG201 9-Speed Cassette Features Close ratio gearing allows a more efficient use of energy through finer cadence control Sprockets are cut away and drilled to reduce weight without reducing rigidity Corrosion-resistant steel cassette lockring For Super Narrow 9-speed HG chains
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