The DFC Geomet-coated dimpled and slotted left rear rotor for 2020–2025 BMW M340i xDrive is a direct-fit replacement featuring hi-carbon alloy construction and GEOMET corrosion protection. Precision mill-balanced with a fine-turned 16 RMS finish, it uses OE vane configuration and premium G3000/G11H18 iron castings to support heat dissipation and rotor stability. Spec limits include DTV 0.10 mm and lateral runout 0.50 mm.
DFC 20-25 BMW M340Ix Left Rear Dimpled & Slotted Hi-Carbon Alloy GEOMET Coated Rotor