Selling this brand new kit as decided existing cassette setup is ok. 

https://ca.wahoofitness.com/devices/indoor-cycling/accessories/zwift-click-cog-buy?

Enjoy seamless virtual shifting on Wahoo direct drive trainers with the Zwift Cog and Click Upgrade Kit. This kit offers seamless compatibility with 8-12 speed  bikes (without the need of one/more cassettes) with KICKR V6, KICKR CORE, and KICKR MOVE direct drive trainers.