Shimano 105 11-speed cassette on a Wahoo Kickr

[jspaceman]

I'm thinking of getting a Wahoo Kickr. Both my bikes are 11-speed so I would need to swap out the Kickr's stock 10-speed cassette for an 11. Since it's a trainer I'll probably get a 105 11-speed cassette. Can an 11-speed cassette fit onto a Kickr without any issues? One of my bikes has Dura-Ace 9070 and the other has Dura-Ace 9000, I take it that both DA systems will work fine with a 105 cassette on a trainer.

[spdntrxi]

I have 11s cassette (6800) in my kickr.. No issues

[11.4]

I had to address the same issue and an 11-speed Shimano cassette fits the Kickr just fine -- no spacer, nothing extra needed. I happened to use an Ultegra 6800 cassette because I had one available -- an 11-23. Just the right setup.