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Shimano Ultegra R8000 11-Speed Cassette 12-25T

★★★★★ ★★★★★
MSP £85.00 Save 25%
Ultegra R8000 11-Speed Cassette 12-25T

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Product ID: CSR8000225

For riding within your known limits and precise parameters, the Shimano Ultegra R8000 11-Speed Cassette 12-25T gives you the gearing for your ride, as well as the smooth shifting you need to make it a success.

Redesigned teeth shave grams whilst a strong integral design gives you a reliable and long-lasting rear cassette, making this a great option for the rider tackling flatter, faster days by bike.

Shimano Ultegra R8000 11-Speed Cassette 12-25T

Gearing is what gets you going forwards. Get it wrong and you can find gaps across your rear cassette where you feel mismatched against your own bike, Making an informed choice on your riding style and stature then is important, and in the Shimano Ultegra R8000 11-Speed Cassette 12-25T, you can be afforded a crafted and narrow breadth of gearing, catering perfectly for those flatter, longer days on the bike.

Riding at pace and picking up your speed, this 246-gram rear cassette is designed for use with Shimano's HG-EV chains, improving speed and accuracy of transmission as you ride. Benefitting from a redesigned tooth shape, this rear cassette keeps weight down whilst maintaining a secure and strong integral shaping, allowing you to transmit your power with an immediacy.

Implementing Hyperglide technology in the shaping too, you can be assured of a far smoother experience in flicking through your rear cassette. Transmission direct and engagement honed into the design of this cassette, you can be sure of riding at your optimum.


  • Model Number: R8000
  • Series: Ultegra
  • 12-25T gearing range
  • Weight: 246g
  • Hyperglide shifting technology
  • Redesigned tooth shaping
  • High-performance gear combinations provide superior rider choice
  • For use with 11-speed HG-EV chains

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