This freehub supports '18, '20 Edition KICKR, KICKR V6 and KICKR CORE with most* Campagnolo 10, 11, and 12 speed cassettes. The freehub for the KICKR 14 and 16 is no longer available. *Campagnolo cassettes with 8 inner arms on the largest cog are NOT compatible with the KICKR '18/KICKR V6 and KICKR CORE version.