Dynamic Friction 4002-42040 GeoSpec Coated Plain Disc Brake Rotor

The Dynamic Friction Company 4002-42040 is an OE replacement disc brake rotor from the DFC GeoSpec Coated series. Engineered to match the form, fit, and function of your original equipment rotors, this plain-faced rotor delivers reliable stopping power with long-lasting corrosion protection straight out of the box.

GeoSpec® Coating Technology:

The hallmark of this rotor is DFC's proprietary GeoSpec® coating, which forms a durable, attractive silver-gray finish across the entire rotor surface—including the hat. This coating provides superior rust resistance compared to conventional paint or zinc coatings, keeping the rotor protected both during storage and throughout its service life.

Key Features:

• Ready to Install: Processed dry and shipped dry—no pre-degreasing or additional preparation required before installation
• Premium Iron Casting: Engineered with G3000/G11H18 cast iron for superior strength, stability, and durability
• OE Vane Configuration: Original equipment vane geometry ensures proper and maximum heat dissipation during braking
• CNC-Machined Precision: Machined to tight tolerances and 100% mill-balanced for smooth, vibration-free stops at any speed
• Full Corrosion Protection: GeoSpec® coating protects the entire rotor surface, including hat and non-friction areas
• OEM-Equivalent Design: Designed to meet the same specifications as original equipment brake rotors
• Plain / Smooth Finish: Non-drilled, non-slotted surface ideal for everyday street driving and normal commute use

The DFC 4002-42040 GeoSpec rotor is an excellent choice for drivers seeking a direct OEM replacement that installs cleanly, reduces brake noise, and resists corrosion longer than standard replacement rotors. Sold as a 2-wheel set.