Which parts exactly do you mean from AP Racing? Discs? Calipers?
Tbh I was looking for some 2-piece brake discs to shed some weight as I had to replace the original discs anyway. Brembo themselves had something on offer which, as it seems, nobody really tried yet.
So I decided to be the guinea pig
Edit: I know K-tec has some 2-piece brake discs as well, who is manufacturing these?