Dynamic Friction 4522-31109 GeoSpec Coated Plain Disc Brake Rotor

The Dynamic Friction Company (DFC) 4522-31109 GeoSpec Coated Plain Brake Rotor delivers OE-quality stopping performance with industry-leading corrosion protection. Engineered as a direct OEM replacement, this disc brake rotor is designed to meet the same form, fit, and function as the original equipment part it replaces.

GeoSpec® Coating Technology:

• Fully coated inside and out with a patented rust-prevention coating for a durable, attractive silver-gray finish
• Superior corrosion protection compared to conventional paint or zinc coatings
• Processed dry, shipped dry, and ready to install — no degreasing or additional preparation required
• Coating is safely swept away by the friction material during normal brake bed-in with no harmful effects

Precision Engineered for Performance:

• Engineered with premium G3000/G11H18 iron castings for superior strength, stability, and long-term durability
• Original Equipment (OE) vane configuration ensures proper and maximum heat dissipation
• CNC-machined to the tightest tolerances available
• 100% precision cut and mill-balanced for smoother stopping and zero vibration at any speed
• Non-directional brake surface finish promotes a faster, more even pad bed-in and quieter stops
• Each rotor passes a 100% electronic inspection station measuring all critical attributes to confirm OE specification compliance

The plain (smooth/blank) rotor surface is ideal for everyday street driving, daily commuting, towing, and light off-road use. Installation is straightforward with no modifications required, helping reduce average brake job time to 1.25–2.5 hours per axle.