This freehub is the 2018 Edition compatible with KICKR 4 and KICKR CORE with most* Campagnolo 10, 11, and 12 speed cassettes.
Note: Installation is required! For installation instructions
*Campagnolo cassettes with 8 inner arms on the largest cog are NOT compatible with the KICKR ’18 and KICKR CORE version.
Please don't try this at home if you are unfamiliar with the process. We are a happy bunch of guys that would gladly assist you in fitting this part.