Dynamic Friction 9004-31065 GEOSPEC Geomet Coated Drilled Disc Brake Rotor

The Dynamic Friction Company 9004-31065 is a GEOSPEC Geomet-coated drilled disc brake rotor engineered to deliver improved stopping performance and long-lasting corrosion resistance. Built from premium G3000/G11H18 hi-carbon iron castings, this rotor offers superior strength, stability, and durability over standard OE replacements.

Key Features:

• GEOMET® Corrosion Protection — Patented silver-gray coating provides superior rust resistance over conventional paint or zinc coatings, withstanding 400+ hours of salt spray testing per SAE J2334 standards
• Cross-Drilled Design — Drilled holes reduce heat buildup on the rotor surface and improve wet-weather braking bite; chamfered holes help minimize the potential for cracking
• Hi-Carbon Alloy Construction — Premium G3000/G11H18 iron casting formula enhances noise dampening and increases overall rotor durability
• 100% Precision Mill-Balanced — Electronically inspected and corrected for balance, ensuring smooth, vibration-free stops at any speed
• Fine-Turned Finish (1.6 RMS) — Non-directional surface finish promotes faster, more even brake pad bed-in and quieter operation
• OE Vane Configuration — Matches original equipment vane layout for proper and maximum heat dissipation
• Ready to Install — GEOSPEC coating is processed dry and shipped dry; no additional prep or cleaning required before installation; coating is safely swept away by friction material during break-in
• Tight Tolerances — Disc Thickness Variation (DTV) of .010mm maximum; Lateral Runout of .050mm maximum

The DFC 9004-31065 is covered by Dynamic Friction Company's 12-month / 12,000-mile limited warranty, providing confidence in quality and long-term reliability. Sold individually (1 rotor per package).