Dynamic Friction 4802-74030 GeoSpec Coated Plain Disc Brake Rotor

The Dynamic Friction Company 4802-74030 GeoSpec Coated Plain Disc Brake Rotor delivers OEM-quality braking performance with advanced corrosion protection. Engineered to meet the same form, fit, and function as original equipment rotors, this plain-style rotor is ready to install straight out of the box — no pre-cleaning or degreasing required.

The proprietary GeoSpec coating forms a durable, attractive silver-gray finish that provides superior rust resistance compared to conventional paint or zinc coatings. The coating is designed not to contaminate braking surfaces, ensuring a proper pad bed-in process and consistent wear over time.

Key Features:

• GeoSpec Fully Coated: Completely coated inside and out for maximum corrosion protection before and after installation
• Premium G3000/G11H18 Iron Casting: Engineered for superior strength, stability, and long-term durability
• Non-Directional Finish: Promotes faster, more even brake pad bed-in for quieter and smoother stops
• OE Vane Configuration: Matches original equipment vane geometry for proper and maximum heat dissipation
• CNC-Machined: Processed to the tightest tolerances available for precise fitment and zero vibration
• 100% Mill-Balanced: All vented rotors are electronically mill-balanced and inspected to ensure smooth, vibration-free performance
• Ready to Install: Shipped dry and ready to install — no additional preparation needed
• Meets OE Specifications: Each rotor passes a 100% inspection station verifying all critical attributes

Specifications:

• Outside Diameter: 310 mm (12.2 in)
• Nominal Thickness: 22 mm (0.87 in)
• Discard Thickness: 20 mm (0.79 in)
• Center/Inside Diameter: 65 mm (2.56 in)
• Overall Height: 48.4 mm (1.90 in)
• Bolt Hole Quantity: 5
• Bolt Hole Diameter: 15.3 mm (0.60 in)
• Lug Circle Diameter: 112 mm (4.41 in)
• Rotor Type: Vented
• Surface Finish: Plain (Smooth)
• Hat Finish: GeoSpec Silver-Gray

WARNING: This product contains Antimony Oxide and other chemicals known to the State of California to cause cancer or reproductive harm.