a caliper that needs a 180 disk up front uses a 160mm disk out back and vice versa.
Yes, I know about that. The original rear calliper is the long leg version for 160mm disc on the rear. The KCNC adapter fits beautifully, and it’s aligned, but it’s about 2 or 3mm too far out from the axle.
Would you like a pic?
I thought about filing the adapter, but it’s maybe 5-6mm thick so I’d be losing half its material.
Ended up buying a new post mount caliper but I can’t fit it yet as I couldn’t find the appropriate banjo hose fitting. So if there’s another solution I would use it and return the caliper.