Designed for road racing, the Ultegra 6500 Mega-9 cassette offers smooth shifting performance in a lightweight package.

Key Features:

• 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 lock-ring.
• For Super Narrow 9-speed HG chains.
• Weight: 203 grams for 11 - 23T.