Shimano Ultegra CS-R8000 11-speed Cassette 12-25

Shimano Ultegra CS-R8000 11-speed Cassette 12-25

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Shimano Ultegra CS-R8000 11-speed Cassette 12-25

The CS-R8000 is the suitable cassette for new Shimano Ultegra 11-speed group.

Everything you need to make your ride distinctively yours: The Shimano Ultegra 11-speed Cassette CS-R8000

The new Ultegra R8000 series is taking our rider-tuned philosophy to the next level, with an extensive range of components for mechanical shifting, electronic shifting (Di2) and time trial / triathlon. 

The 11-speed cassette sprocket comes in 6 'standard' sizes (CS-R8000, 11-25T, 11-28T, 11-30T, 11-32T, 12-25T, 14-28T) and a wider 11-34T (CS-HG800) cassette with a hub body designed to fit both road bikes (with spacer) and mountain bikes.

Product features - CS-R8000

  • Use: Road
  • Group: Ultegra
  • Model: CS-R8000
  • Type: HG-EV
  • Gear: 11-speed
  • Teeth: 12-25
  • Compatible chain: HG-EV 11-speed, HG-X 11-speed
  • Gradation: 12-13-14-15-16-17-18-19-21-23-25 teeth


  • Spider arm: Carbon / Aluminum
  • Spockets: Steel
  • Lock ring: Aluminum


  • 243g (manufacturer information)

Scope of delivery

  • 1 Ultegra 11-speed Cassette CS-R8000 12-25T incl. Lock Ring


HG-EV cassette sprocket is for rider-tuned gear combination & cadence management. We provide optimal 11-speed drive train gear ratio; you can choice wider and closer gear combination available to match various riding disciplines. HG-EV cassette sprocket is obtained 11-speed gear without compromising the 10-speed durability and improved HYPERGLIDE shifting.