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<http://schema.org/description>
"The uninterrupted shifting experience of the Shimano Ultegra CS-R8100 12-speed cassette range lets you climb, sprint, or cruise without stopping to think about your next gear change. Larger driving..."
<https://www.hubcycle.ca/product/shimano-ultegra-cs-r8100-12-speed-cassette-399329-1.htm>