Dynamic Friction 4522-40004 GeoSpec Coated Plain Disc Brake Rotor

The Dynamic Friction Company 4522-40004 is a GeoSpec Coated Plain (Smooth) Disc Brake Rotor engineered as a direct OEM replacement. DFC's proprietary GeoSpec coating forms a durable, attractive silver-gray finish that fights rust far more effectively than conventional paint or standard zinc coatings, keeping the rotor protected from the moment it leaves the factory to the moment it's installed.

Each rotor is processed dry, shipped dry, and arrives ready to install with no additional prep work required — no degreasing, no cleaning. The GeoSpec coating is safely and cleanly swept away by the friction material during normal break-in with no harmful effects.

Key Features:

• Engineered with premium G3000/G11H18 iron castings for strength, stability, and durability
• Proprietary GeoSpec coating delivers superior corrosion protection over zinc or conventional paint
• OE vane configuration ensures proper and maximum heat dissipation
• CNC-machined to the tightest tolerances available
• 100% precision cut and mill-balanced for smooth, vibration-free stopping at any speed
• Non-directional surface finish promotes faster, more even pad bed-in and quieter stops
• 100% inspected at a dedicated quality station to confirm all critical attributes meet OE specifications
• Plain (smooth) rotor style — ideal for everyday street and commuter driving
• Drop-in fit — designed to match OEM form, fit, and function with no modifications required

The Dynamic Friction 4522-40004 GeoSpec rotor delivers reliable, long-lasting braking performance for daily drivers seeking a premium OE-replacement solution with enhanced corrosion resistance and a clean, factory-fresh appearance.