The DFC Geomet-coated drilled rear rotor for 1998–2008 Porsche 911 is a hi‑carbon alloy replacement engineered to control heat and resist corrosion. Premium iron castings and OE-style vane configuration promote effective cooling, while 100% precision mill-balancing reduces vibration. A fine-turned 16 RMS finish aids pad break-in and the Geomet coating protects surfaces; DTV 0.10 mm and lateral runout 0.50 mm maximums are specified.
DFC 98-08 Porsche 911 Rear Drilled Hi-Carbon Alloy Geomet Coated Rotor