Do these work with mountain bikes? I noticed the new one has the ability to take a 148×12 axle so tempted to join the zwift stuff rather than trudging out in winter muck for my evening rides. Assuming I have a 36 tooth front ring will the kickr be any good or are they mainly only suited to road gearing? Never used a turbo trainer before, let alone a kickr.

It’ll work fine, but it’s an awful lot of money to spend on a first turbo trainer!

36 and MTB works fine, you may be in the bottom couple of years, but you can still hold a decent pace

https://support.zwift.com/hc/en-us/community/posts/115018694743-Mountain-Bike-Support

Seems to imply that you may have issues with the relatively low gearing on a mountain bike just like in real life, that said, a 36 is going to be better than a smaller ring.

It sounds mad, but it might be easier to create a road or cross-based turbo ‘bike’ from cheap bits using a big ring up front and a geared rear. Obviously you don’t need brakes and you can get away with whatever you have lying about.

Ok, thanks guys, looks like road gearing is the way to go.

I suspect it may depend on how brutally strong you are. You could always start off with a mtb and see how that goes, it seems to work for Weeksy. The Kickr is ace btw, my gf bought one a month or so back and the way it interacts with stuff like Zwift and the Sufferfest training videos is way better than a conventional dumb trainer.