The DFC Geomet-coated dimpled left rear rotor for 2019–2022 BMW 840i is a direct-fit replacement combining hi-carbon alloy construction with GEOMET anti-corrosion coating. Precision mill-balanced with a 16 RMS fine-turned finish, it preserves OE vane configuration and uses premium G3000/G11H18 iron castings to aid heat dissipation and dimensional stability. Tolerances: DTV 0.10 mm and lateral runout 0.50 mm.

DFC 19-22 BMW 840I Left Rear Dimpled Hi-Carbon Alloy GEOMET Coated Rotor