The SHW cross-drilled lightweight brake rotor for 2005–2006 BMW M3 3.2L (right front) is a vehicle-specific replacement that provides substantial weight savings and therefore less unsprung mass, as noted in the product details. It installs in the right-front position and is supplied with the part reference to simplify fitment verification for the listed M3 application.
SHW 05-06 BMW M3 3.2L Right Front Cross-Drilled Lightweight Brake Rotor (34112282446)