DFC 17-25 BMW M850i xDrive Left Front Hi-Carbon Alloy Geomet Coated Rotor

This is a DFC left front brake rotor, part number 900-31166D, designed for a range of BMW and Rolls-Royce vehicles including the M850i xDrive, X5, and X7. It's built with G3000/G11H18 iron castings, which are well-built to offer strength and stability for consistent stopping power. The rotor features an original equipment vane configuration, crucial for effectively dissipating heat generated during braking, helping to prevent fade.

DFC precision mill-balances each rotor to ensure a smooth stopping experience without unwanted vibration, even at higher speeds. The fined turned finish, measured at 16 RMS, helps with the initial break-in period for both the rotor and your brake pads, leading to better performance right away. For added protection against the elements, this rotor is Geomet coated, providing high-performance corrosion resistance to keep it looking and performing well over time. It meets strict specifications for disc thickness variation (0.010 MM maximum) and lateral runout (0.050 MM maximum), ensuring it fits right and performs as expected.