My rear wheel can be fitted with a 142×12 axle – is this what’s needed for the Max frame? It mentions 148mm?

How about cranks? Anything special needed?

It’s a boost rear end so you’re going to need a 148×12 hub spacing. There’s a WolfTooth ‘Boostintor’ kit for quite a few common wheels that allow you to use your existing hub. Will need to be re-dished tho.

It doesn’t need boost cranks. In Fact Cy recommends you don’t use them. Chainline for 1×11 is very good on mine with a RF turbine chainset.

For the rear wheel you will need one of these
Boostinator

Thanks both that’s me out