Dynamic Friction 4004-63109 GeoSpec Coated Plain Disc Brake Rotor

The Dynamic Friction Company (DFC) 4004-63109 GeoSpec Coated Plain Brake Rotor is a premium OE-replacement disc brake rotor engineered for reliable, quiet, and smooth stopping performance. Featuring DFC's signature GeoSpec® corrosion-protection coating, this rotor arrives processed dry, shipped dry, and ready to install — no pre-degreasing or additional preparation required.

GeoSpec® Coating Advantage:

The GeoSpec® coating forms a durable, attractive silver-gray finish that provides superior rust and corrosion protection compared to conventional paint or zinc coatings. The coating is safely swept away by the friction material during normal bedding, leaving no harmful effects on braking performance.

Key Features:

• Premium G3000/G11H18 iron castings for superior strength, stability, and long-term durability
• OE vane configuration ensures proper and maximum heat dissipation
• CNC-machined to the tightest tolerances for a precise, direct-fit OEM replacement
• 100% precision cut and mill-balanced for smoother stopping and zero vibration at any speed
• Non-directional surface finish promotes faster brake pad bed-in and quieter, smoother stops
• 100% inspected at final station to verify all critical attributes meet OE specifications
• Ready to install — no cleaning or degreasing needed, saving time and labor during installation
• Suitable for normal commute, performance street driving, towing, and off-road use

Each DFC GeoSpec rotor is built to meet the same form, fit, and function as the original equipment rotor it replaces, backed by a 12-month / 12,000-mile limited warranty against defects in materials and craftsmanship.