The DFC Geomet-coated rotor for 2009–2016 BMW Z4 rear is a hi-carbon alloy replacement rotor offering OE-style vane cooling with added corrosion protection. Constructed from premium G3000/G11H18 iron castings, it’s precision mill-balanced for smoother stopping and reduced vibration. The fine-turned 16 RMS surface aids pad break-in and the Geomet coating guards against corrosion; DTV (0.10 mm) and lateral runout (0.50 mm) remain within tight limits.
DFC 09-16 BMW Z4 Rear Hi-Carbon Alloy Geomet Coated Rotor