Respectfully, I'm just going to reflect back to you the things you said in your posts:
1) You asked about aftermarket rotors and pads for an unknown European manufacturer (I happen to know they are not Maserati OEM).
2) You raised the liability issue regarding non-OEM parts.
3) You wrote of Brembo products, which are also not OEM.
If (2) trumps (1) & (3) for you, your decision is made.
In the hypothetical situation you described, any potential claimed liability would fall to others besides Maserati. If you pressed litigation, discovery would reveal the manufacturer (If you didn't already know it), where your case could be directed.
Does that help with your decision-making, or have you already made it?