shimano dura ace CS-R9100 11 speed cassette
$263.12
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Gear combination: 11-25T, 11-28T, 11-30T, 12-25T, 12-28T Closer gear combination: 11-25T/12-25T CFRP & Alloy spider arm, 5 titanium sprockets Wider gear combination: 11-28T/12-28T/11-30T (new gear combination) Rider tuned gearing Lightweight
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