The DFC Geomet-coated left-front rotor for 2016–2025 BMW M440i is a hi-carbon alloy replacement that restores braking reliability while resisting corrosion. It uses premium G3000/G11H18 iron castings and an OE-style vane configuration for improved heat dissipation. Precision mill-balancing and a fine-turned 16 RMS finish reduce vibration and aid pad break-in. Geomet coating protects against corrosion; DTV ≤0.10 mm, lateral runout ≤0.50 mm.
DFC 16-25 BMW M440i Left Front Hi-Carbon Alloy Geomet Coated Rotor