Dynamic Friction 4824-31090 GeoSpec Coated Plain Disc Brake Rotor

The Dynamic Friction Company (DFC) 4824-31090 is a GeoSpec fully coated plain (smooth/blank) disc brake rotor engineered as a direct OE replacement. Built on a premium G3000 cast iron foundation, this rotor duplicates the precise original equipment vane configuration and fitment for a true drop-in installation.

GeoSpec Coating Technology:

• Completely coated inside and out with a patented corrosion-resistant paint that forms a durable, attractive silver-gray finish
• Fights rust far more effectively than conventional paint or zinc coatings
• Coating is engineered to be safely swept away by friction material during bed-in — with no harmful effects on braking performance
• Ships dry and installs dry — no pre-installation cleaning required

Precision Manufacturing:

• CNC-machined to the tightest tolerances available in the market
• Non-directional surface finish promotes faster, more even brake pad bed-in for quieter and smoother stops
• 100% electronically inspected — over 20 attributes verified to ensure every rotor meets OE specifications
• All vented rotors are 100% inspected for balance and corrected via a state-of-the-art electronic mill-balance process

Rotor Specifications:

• Rotor Style: Plain / Smooth / Blank
• Rotor Material: Cast Iron (G3000)
• Rotor Coating: GeoSpec Silver-Gray
• Surface Finish: Non-Directional
• Outside Diameter: 324 mm (12.76 in)
• Nominal Thickness: 21.8 mm
• Discard Thickness: 20.4 mm
• Overall Height: 77.5 mm (3.05 in)
• Center Hole Diameter: 75 mm
• Bolt Holes: 5 × 14.7 mm

The DFC GeoSpec 4824-31090 is ready to install straight out of the box, saving time during the brake job by eliminating the need to degrease or prep the rotor surface before mounting.