The SHW cross-drilled lightweight brake rotor for 2011–2016 BMW M5 4.4L (left rear) is a model-and-engine-specific replacement listed for that wheel-side. This drilled, lightweight rotor is supplied as the left-rear service part with the catalog reference to help verify fitment and enable a like-for-like replacement on the identified M5 rear applications.
SHW 11-16 BMW M5 4.4L Left Rear Cross-Drilled Lightweight Brake Rotor (34212284103)