Hopefully a straight-forward question. Frame has rear post mounts set up for a 160mm rotor. Now if I want to put a 180 on is it just a Post to Post 180mm adaptor I need (can only find fronts with this description)? The brakes are 2012 XT’s. Sounds right but just dont know if it is 🙂 Cheers.

what frame is it?

Turner Flux, the manufacturer said a 180 was ok (I’ve saved the email just incase there was any warranty concern in the future).

Post mount usually has the same mounts front and rear, so should be fine.

i just did this on a new build and got the shimano ‘front’ post to post adaptor. fitted fine. Post is always the same size

yep that’s spot on, its the same on my 5 spot. Are you running a 180mm rotor on a flux?

Think it is a “H” mount from Hope. Got two on my 5 Spot, 180mm front and rear.