Hi just wondering if it is possible to use a front brake mount on the rear break, because I’m looking for a rear mount for post mounting 203mm but can’t seam to find rear for this size, only for front?

Some mounts are universal – my Hope 183 post mounts do front or rear. I think it varies with the mounting (IS/post) and the caliper itself though.

Don’t rear mounts size down 20mm in relation to when they are used on the front?

i.e. a 180 front mount is a 160 rear.

^^^^ what Ghostly says…

So you’ll need a 223 (?) front mount for your 203 rear (thats a masive disc, whats it for?)

It depends on the frame. If the frame mount was for a post mount 160mm then the front adapter should work. iS style mounts are 20mm different as ghostly suggests.

My Capra has 200mm front and rear ghost

Ok thanks for the help