Similar to the Dura Ace the Five largest sprockets are mounted on two light seperate Alloy carriers that reduce weight and increase sprocket stiffness.
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Features
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
