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shimano ultegra12-23t cassette
- High performance 9-speed cassette
- Hyperglide 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
- Two largest sprockets are mounted on a lightweight alloy carrier to reduce weight and increase rigidity
- Sprockets are cut away and drilled to further reduce weight without reducing rigidity
- Chrome-plated finish offers hard wearing resistance to corrosion
- Chrome-plated steel cassette lockring
- For Super Narrow 9-speed HG chains
- Weight: 203 grams for 11 - 23T
