They might be the same parts but in the end I'm after the M3 components as I plan to do an M3 conversion. The photos on ECS website show the M logo. I suspect they are not the same if the M logo is missing.
Also the price difference in E9X brakes seems high. I understand if it's $10-$20. But it's nearly half the price for 'OEM'.
BMW 135i N54
MERCEDES CLA45 AMG