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Ultegra CS-R8100 12-Speed Cassette

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Ultegra CS-R8100 12-Speed Cassette

12 speeds of range make its way to the Shimano lineup with the Ultegra CS-R8100 12-Speed Cassette. This cassette utilizes 12 gears to keep the rations closer and pedaling action smoother up and down the cassette. Ultegra cassettes are made of steel to take on plenty of abuse and long miles.


  • Functional and budget-friendly 12-speed cassette
  • Steel cog material holds up to lots of miles
  • Available in a variety of range options
  • Works with hyperglide 11 and 12 speed carriers
  • Item #SHIU1F3
Cog Sizes
[11-30] 11, 12, 13, 14, 15, 16, 17, 19, 21, 24, 27, 30, [11-34] 11, 12, 13, 14, 15, 17, 19, 21, 24, 27, 30, 34
Cog Material
Freehub Type
Carrier Material
Claimed Weight
[11-30] 291g, [11-34] 345g
Manufacturer Warranty
2 years
cycling, road, gravel