Ultegra 6500 series Mega9 cassette uses precision HyperGlide sprockets for smooth shifting.
Light alloy sprocket carrier is used to mount the lowest three sprockets to reduce weight and increase rigidity.
Drilled out sprockets result in low weight.
Complete compatibility with Dura-Ace, Ultegra and 105 Mega9 drivetrains.
Silver and chrome-plated finish.
For use with Super Narrow HG chains only.
Weight circa 210g (12 - 23).
Fits to Shimano HG compatible freehub body.
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