The Shimano Alivio 9 Speed Cassette with hyperglide sprockets that have a computer designed tooth configuration with contoured shift gates, resulting in a crisp smooth shift even under load.
- For Super Narrow 9-speed HG chains
- Corrosion-resistant steel cassette lockring
- Nickel-plated finish offers hard wearing resistance to corrosion
- Sprockets are cut away and drilled to reduce weight without reducing rigidity
- Close ratio gearing allows a more efficient use of energy through finer cadence control
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