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Specifications

  • Model: CS-R8101
  • Speed: 12-speed
  • Range: 11-30T
  • System: HYPERGLIDE+
  • Freehub compatibility: Shimano 11-speed and 12-speed freehub bodies
  • Groupset match: Ultegra R8100 / R8150

FAQ

Who should choose the 11-30T over the 11-34T?

The 11-30T suits flat to rolling terrain and racing scenarios where closely spaced gear steps improve cadence control. Choose 11-34T if you ride significant climbs or highly varied terrain.

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.

What chain should I use with the CS-R8101?

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

Best For

Road racers and performance riders on Shimano Ultegra R8100 or R8150 who ride flat to rolling courses and want tight gear steps with HYPERGLIDE+ under-load shifting.

Shimano Ultegra CS-R8101 Cassette - 12-Speed | 11-30t Reviews:

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