The SHW cross-drilled lightweight brake rotor for 2019–2021 BMW M2 Competition 3.0L (left rear) is a vehicle-specific drilled rotor that delivers substantial weight saving and therefore less unsprung mass, according to the product notes. It is supplied as the left-rear unit with the catalog reference to confirm fitment and support a direct replacement on the listed M2 Competition models.
SHW 19-21 BMW M2 Competition 3.0L Left Rear Cross-Drilled Lightweight Brake Rotor (34118072019)