All direct drive smart trainers ship with Shimano HG freehubs so can be a costly exercise switching to a SRAM XD Driver (freehub) and a compatible XD cassette to mount your 12 Speed Eagle MTB or gravel bike. The PG-1230 (NX Eagle) is Shimano HG freehub compatible and will save you a lot of money!

Links: SRAM NX Eagle PG-1230 (Amazon US): https://amzn.to/3gmNPuq