SRAM Force XG-1270 10-33 12s On Tacx flux 2

What do I need to mount this cassette on a Flux 2 ?

TIA

I believe you just need a Tacx XDR freehub body like this one.

I read here that I may need a spacer

https://www.galaxus.at/en/s3/questionandanswer/hello-is-a-sram-my26-cassette-xg-1270-force-axs-12sp-12-speed-10-33-compatible-with-the-tacx-flux-2--872170

One note: If using ERG 100% of the time, you could not bother and just use shimano 10 or 11 speed cassete. It will work fine, and no need to buy xdr freehub for your tacx

:backhand_index_pointing_up:

Or one of the Sram cassettes that don’t have a 10 tooth cog.

But the mechanical compatibility will not be there, chain length, etc.

It will work if you use ERG.
Look at zwift cog - they have the same principle applied