Dynamic Friction 4522-31003 GeoSpec Coated Plain Disc Brake Rotor

The Dynamic Friction Company (DFC) 4522-31003 is a GeoSpec fully coated plain (smooth/blank) disc brake rotor engineered as a direct OE replacement. Designed to deliver quiet, vibration-free stops right out of the box, this rotor requires no pre-installation cleaning or degreasing — it ships dry and is ready to install immediately.

GeoSpec Coating Advantage:

• Superior corrosion resistance — a patented silver-gray finish fights rust far better than conventional paint or zinc coatings, protecting the rotor inside and out
• Brake-friendly formula — the coating is safely and cleanly swept away by friction material during bed-in, with no harmful contamination of braking surfaces
• Attractive finish — the durable silver-gray appearance enhances the look of your brake assembly

Precision Engineering:

• Cast from premium G3000/G11H18 iron for superior strength, stability, and long-term durability
• CNC-machined to the tightest tolerances available for smooth, consistent braking
• Non-directional surface finish promotes faster, more even brake pad bed-in and quieter stops
• OE vane configuration ensures proper heat dissipation matching original equipment design
• 100% mill-balanced using electronic mill-balance process to eliminate vibration at all speeds
• Passes a 100% inspection station measuring all critical attributes to confirm OE specification compliance

Ready to Install:

• No modifications required — direct drop-in fitment built to OEM form, fit, and function
• Processed and shipped dry — no cleaning or degreasing needed before installation
• Saves time during brake service compared to oil-covered conventional rotors

Backed by Dynamic Friction Company's commitment to quality, the GeoSpec line covers over 1,400 SKUs for foreign and domestic passenger cars and light trucks, making it one of the most complete coated rotor programs available.