EST. 1982

Shimano Ultegra CS-6600 10-Speed 'Under-17' Cassette / 16-27t

SHIMANO
Designed for high-performance 10-speed road bikes, mainly aimed at U17 racing juniors and lower teeth. The hyper-glide sprockets have been specially computer designed to create a specific configuration that results...
$140.00
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Designed for high-performance 10-speed road bikes, mainly aimed at U17 racing juniors and lower teeth. The hyper-glide sprockets have been specially computer designed to create a specific configuration that results in a smooth shift even when under high impact.

Designed for super narrow 10 speed HG chains

Sprockets cut away and drilled

Reduced weight

Close ratio gearing