Shimano Ultegra CS-R8101 Cassette - 12-Speed | 11-34t

Shimano Ultegra CS-R8101 Cassette - 12-Speed | 11-34t Shimano

Shimano Ultegra CS-R8101 Cassette - 12-Speed | 11-34t

Shimano Ultegra CS-R8101 Cassette - 12-Speed | 11-34t

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Why Is the Shimano Ultegra CS-R8101 the Go-To 12-Speed Cassette for Serious Road Riders?

The Shimano Ultegra CS-R8101 brings HYPERGLIDE+ technology to Ultegra-level riders, enabling uninterrupted shifting under full pedaling load whether climbing, sprinting, or accelerating out of corners. Larger driving cogs maximize drivetrain efficiency and the cassette is compatible with both Shimano 11-speed and 12-speed freehub bodies, making it a clean upgrade path for riders on existing wheelsets. The 12-speed gear range provides closely spaced steps for superior cadence control across the full variety of road terrain.

Compatible with Shimano Ultegra R8100 and R8150 12-speed drivetrains. Also compatible with existing Shimano 11-speed freehub bodies. Requires a 12-speed chain.

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$117.99
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Specifications

  • Model: CS-R8101
  • Speed: 12-speed
  • Range: 11-34T
  • System: HYPERGLIDE+
  • Freehub compatibility: Shimano 11-speed and 12-speed freehub bodies
  • Groupset match: Ultegra R8100 / R8150

FAQ

Can the CS-R8101 be used with my existing 11-speed wheelset?

Yes. The CS-R8101 is compatible with standard Shimano 11-speed freehub bodies, so upgrading to Ultegra 12-speed does not require new wheels.

Is the CS-R8101 compatible with Dura-Ace R9200 derailleurs?

Yes. Shimano 12-speed road cassettes are cross-compatible across Dura-Ace and Ultegra within the R9200 and R8100 series.

What chain should I use with the CS-R8101?

Use a Shimano 12-speed chain. Shimano uses the same chain platform across Dura-Ace R9200 and Ultegra R8100 12-speed road drivetrains.

Best For

Performance road cyclists on Shimano Ultegra R8100 or R8150 who ride varied terrain and want wide gearing range with HYPERGLIDE+ under-load shifting performance.

Shimano Ultegra CS-R8101 Cassette - 12-Speed | 11-34t Reviews:

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