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The DFC Geomet-coated rear rotor for 2017–2025 BMW M850i xDrive Gran Coupe is a hi-carbon alloy replacement that restores braking performance and resists corrosion. It uses premium G3000/G11H18 iron castings with OE-style vane configuration to improve heat dissipation. Precision mill-balancing and a fine-turned 16 RMS finish reduce vibration and aid pad break-in. Geomet coating protects the surface; DTV ≤0.10 mm and lateral runout ≤0.50 mm support smooth stopping.
DFC 17-25 BMW M850i xDrive Gran Coupe Rear Hi-Carbon Alloy Geomet Coated Rotor
