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The DFC Geomet-coated rotor for 2012–2021 BMW 428i xDrive coupe and convertible front is a hi-carbon alloy direct-fit rotor offering OE-style cooling and added corrosion protection. Constructed with premium G3000/G11H18 iron castings and OE vane configuration, it manages heat effectively. Precision mill-balancing reduces vibration for smoother stopping, the fine-turned 16 RMS finish supports pad break-in, and Geomet coating plus DTV (0.10 mm) and 0.50 mm runout limits preserve performance.
DFC 12-21 BMW 428I xDrive Coupe & CONVERTIBLE Front Hi-Carbon Alloy Geomet Coated Rotor
