The EBC Ultimax slotted rear rotors for 2003–2006 BMW Z4 3.0 use progressively angled slots to draw cool air over the disc for quieter operation than conventional slotted rotors. The slots help clear dust and debris to preserve pad grip and extend pad life while aiding cooling. These vented rear discs are 294mm diameter, 19mm thick and made for OE-style rear fitment.
EBC 03-06 BMW Z4 3.0 Premium Rear Rotors