Dynamic Friction 4004-63085 GeoSpec Coated Cross-Drilled Disc Brake Rotor

The Dynamic Friction 4004-63085 is a GeoSpec Coated Cross-Drilled Disc Brake Rotor engineered to deliver reliable stopping performance with superior corrosion resistance. Featuring Dynamic Friction Company's proprietary GeoSpec® coating, this rotor forms a durable, attractive silver-gray finish that fights rust far better than conventional paint or zinc coatings.

Each rotor ships processed dry and ready to install — no pre-degreasing or additional prep work required, saving time and labor during installation. The cross-drilled hole pattern improves heat dissipation and helps clear gas and debris from the rotor surface during braking.

Key Features:

• GeoSpec® proprietary coating provides superior corrosion protection over zinc and conventional paint finishes
• Engineered with premium G3000/G11H18 cast iron for strength, stability, and long-term durability
• CNC-machined to the tightest tolerances for precise fit and quiet operation
• OE vane configuration ensures proper and maximum heat dissipation
• 100% precision mill-balanced for smoother stopping and zero vibration at any speed
• Non-directional finish promotes faster brake pad bed-in and smoother stops
• Cross-drilled surface for improved cooling and surface bite
• Designed to meet OEM form, fit, and function specifications
• Ready to install — no cleaning of oil-covered rotor required
• Backed by a 12,000-mile or 12-month limited warranty

The Dynamic Friction 4004-63085 is an ideal OE replacement or performance street upgrade, suitable for normal commuting, performance driving, and towing applications. It is manufactured to OEM standards and 100% inspected for balance before leaving the facility.