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The front of a silver Shimano Ultegra R8101 12-Speed Cassette against a white background.

Shimano Cassettes

Shimano Ultegra R8101 12-Speed Cassette

Niel Ubod March 26, 2026

$130.00

Shimano’s Ultegra 12-speed road cassette for Di2 and mechanical groupsets

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Shimano Ultegra R8101 12-Speed Cassette

The Shimano Ultegra R8101 12-Speed Cassette is designed to balance performance with price. This cassette works with both mechanical and Di2 groupsets. The Shimano Ultegra R8101 cassette uses HYPERGLIDE+ for maximum efficiency and seamless shifting. In addition, it is compatible with HG freehub bodies, which allows most riders to continue to use their current hub and wheelset.

 

Features

  • New 12-step gear range
  • HYPERGLIDE+ technology
  • Fits HG freehub bodies
  • For Di2 and mechanical 12-speed groupsets

 

Shimano Road Cassette Comparison (Sorted by Speeds)

ModelPriceBikeSpeedsGearingWeight
Shimano 105 R7101 12-Speed Cassette$65.99Road12-Speed11-34T361 grams
Shimano CS-HG710 12-Speed Cassette$87.99Road/Gravel12-Speed11-36T391 grams
Shimano Ultegra R8101 12-Speed Cassette$117.99Road12-Speed11-30T | 11-34T291 grams
Shimano DURA-ACE R9200 12-Speed Cassette$359.99Road12-Speed11-30T | 11-34T223 grams
Shimano DURA-ACE CS-R9100 11-Speed Cassette$269.99 - $292.99Road11-Speed11-25T | 11-28T | 11-30T | 12-25T | 12-28T211 grams

Compatibility

This cassette is compatible with Shimano 12-speed road Di2 and mechanical drivetrains and fits HG freehub bodies.

Specs

  • Color: Silver
  • Speeds: 12
  • Gearing: 11-30T | 11-34T
  • Weight: 11-30T - 291 grams | 11-34T - 345 grams
  • Cogs: 11-30T: 11, 12, 13, 14, 15, 16, 17, 19, 21, 24, 27, 30 | 11-34T: 11, 12, 13 14, 15, 17, 19, 21, 24, 27, 30, 34

Tools Needed for Installation

You will need the following tools for installation of this product. You can shop for the required tools on our Tools Page.

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