Shimano Ultegra CS-R8100 Cassette (Silver) (12 Speed) (Shimano HG) (11-34T)

Shimano Ultegra CS-R8100 Cassette (Silver) (12 Speed) (Shimano HG) (11-34T)
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Price: $111.99

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The Shimano Ultegra CS-R8100 Cassette brings Hyperglide+ technology to the road. Hyperglide+ allows for better shifting under load so it is no longer necessary to ease up on the pedals when making a shift. For simple compatibility, Shimano 12-speed road cassettes fit on the same hub body as 11-speed road cassettes. This allows riders to use their current wheels for 12-speed. Shimano also managed to add the extra sprocket without increasing the total weight of the cassette.


  • Faster, seamless shifts under maximum pedaling load
  • Refined 12 step gear combination provides peak efficiency and accelerating performance for every situation
  • Compatible with 12-speed and road 11-speed freehub bodies
  • Compatible with Shimano Di2 12-speed road derailleurs

Type: Cassette
Speeds: 12 Speed
Drive Type: Shimano HG (11/12 Speed Road)
Color: Silver
Weight: 291g (11-30T), 345g (11-34T)

Sprocket Configuration:

  • 11-30T: 11-12-13-14-15-16-17-19-21-24-27-30T
  • 11-34T: 11-12-13-14-15-17-19-21-24-27-30-34T

Check out our full selection of Shimano Ultegra 12 Speed Di2 Parts.

Learn about freehub bodies and cassette compatibility

This product was added to our catalog on June 28, 2022