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HG80 Mega9 cassette featuring light weight minimal design
sprocket carrier.
• The 3 largest sprockets are mounted on a lightweight
alloy carrier to reduce weight and increase rigidity.
• 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.
• Sprockets are cut away and drilled to reduce weight
without reducing rigidity.
• For Super Narrow 9-speed HG chains.
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