Hello, Paul and everybody,
many thanks for the info and the pictures.
In fact I forgot the C5040 brake calipers.
I only tested the CP6600 and CP9441 in CAD.
The CP5040 fit really well with a 295mm/11.60" brake disc in the rim.
Now I have 2 options:
1. AP 4 piston brake calipers with brake disc...