Dynamic Friction 4522-31120 GeoSpec Coated Plain Disc Brake Rotor

The Dynamic Friction Company (DFC) 4522-31120 GeoSpec Coated Plain Brake Rotor delivers OEM-grade stopping performance wrapped in DFC's proprietary corrosion-resistant coating. Engineered as a direct replacement disc brake rotor, the GeoSpec line is designed to match the exact form, fit, and function of your original equipment rotor — with superior rust protection built in from the start.

GeoSpec Coating Advantage:

Unlike conventional paint or zinc coatings, DFC's patented GeoSpec coating forms a durable, attractive silver-gray finish that provides superior corrosion resistance across the entire rotor surface — inside and out. The coating is designed to be safely and cleanly swept away by the brake friction material during the bed-in process, with no harmful effects on braking performance or pad wear.

Key Features:

• Premium G3000/G11H18 iron casting for exceptional strength, stability, and long-term durability
• OE vane configuration duplicated precisely for proper and maximum heat dissipation
• CNC-machined to the tightest tolerances available in the market for consistent, precise fitment
• 100% mill-balanced using state-of-the-art electronic balancing for smooth, vibration-free stops at any speed
• Non-directional surface finish promotes faster, more even brake pad bed-in and quieter operation
• Fully coated — inside and out — with rust-prevention coating for long-lasting protection before and after installation
• Ready to install — processed dry and shipped dry, requiring no pre-installation degreasing or cleaning
• 100% inspected at a final QC station measuring all critical attributes to ensure OE specification compliance
• Plain (blank) rotor face — smooth surface for standard street driving applications
• 1-Year manufacturer warranty

DFC GeoSpec rotors save time during installation — the average brake job takes 1.25 to 2.5 hours per axle, and eliminating the need to degrease an oil-covered rotor reduces that time significantly. Every GeoSpec rotor ships ready to bolt on, making them a preferred choice for both professional technicians and DIY installers.