Thanks for choosing Wahoo!

Replacing the Cassette

For users who need to replace a worn cassette or change to a different cassette in order to achieve drive train compatibility. Campagnolo cassettes require a new freehub. See “Changing the Freehub” for instructions. Wheels MFG Accelerator can be used in place of a campy freehub and cassette.

Required Tools:

  • Cassette Lock Ring Tool (Park Tool FR-5 or similar)
  • Torque Wrench with 1” socket (capable of 40 Nm)
  • Chain Whip (Park Tool SR-11 or similar)

Important Torque Settings:

  • Cassette Lock Ring:                                 40Nm

Step-By-Step Instructions:

1)      Use the chain whip to prevent the cassette from spinning while removing the cassette lock ring.

2)      Remove the cassette cluster and 1.8mm spacer (for non 11-speed cassettes).

3)      Find your new cassette in the table below to determine if the 1.8mm spacer is required:

Cassette Type

1.8mm Spacer Required

SRAM/Shimano 10-spd


SRAM/Shimano 9-spd


SRAM/Shimano 8-spd


SRAM/Shimano 11-spd (road)


Wheels MFG Accelerator 10-spd (campy compatible)


Wheels MFG Accelerator 11-spd (campy compatible)


NOTE: SRAM XX1 Mountain cassettes are not compatible with the KICKR.

4)      Install the 1.8mm spacer (if required) on the freehub followed by the new cassette. Be sure to properly align each cog with the splined freehub body.

5)      Reinstall the cassette lock ring and torque to 40Nm unless otherwise specified.

Contact Support


1(877) 978-1112
(M-F) 10am-7pm ET UK?

UK: +44 800 808 5773
(M-F) 3pm-12am GMT US?