DFC Rotor Drilled and Slotted DFC 21-25 Mercedes-Benz Gle63 AMG S Front Drilled & Slotted Hi-Carbon Alloy GEOMET Coated Rotor DFC Rotor D/S Engineered With Premium G3000/G11H18 Iron Castings For Strength, Stability, And Durability Original Equipment (OE) Vane Configuration To Ensure Proper And Maximum Heat Dissipation 100% Precision Mill-Balanced For Smoother Stopping And Zero Vibration At Any Speed Fined Turned Finish (16 RMS) For Improved Initial Rotor And Pad Break-In Geomet(R) Coated To Provide High-Performance Corrosion Protection Disc Thickness Variation (DTV) - 010 MM Maximum Lateral Runout - 050 MM Maximum