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- High performance 10-speed Dyna-Sys 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
- Six largest sprockets are mounted on lightweight alloy carriers 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
-Alloy cassette lockring
- For 10-speed HG-X MTB chains
