GEOMET® Anti-Corrosion Coating
What Is GEOMET® Coating?
GEOMET® is a proprietary water-based inorganic coating system developed by NOF Metal Coatings. It provides exceptional corrosion protection through a zinc-and-aluminum flake matrix bonded directly to the metal surface — without the environmental concerns of traditional zinc plating or electrogalvanizing.
Ghost Rotors applies GEOMET® to all rotor surfaces including:
- Hat (bell) and mounting face
- Vane channels and internal surfaces
- Non-friction outer surfaces of the rotor face
- Around drilled holes and slots
The friction surface remains uncoated — the pad beds directly on bare iron for optimal friction, while all exposed non-friction surfaces stay rust-free.
GEOMET® vs Zinc Plating
Many budget aftermarket rotors use zinc electroplating for corrosion protection. While zinc plating works initially, it has significant limitations compared to GEOMET®:
- Zinc plating is applied in an electrolytic bath using heavy metal solutions — an environmentally regulated process that produces hazardous waste
- Zinc coating adhesion can fail at the edges of drilled holes and slots under thermal cycling, leaving bare metal exposed
- Zinc coating thickness is typically thinner than GEOMET®, providing less barrier protection over time
GEOMET® outperforms zinc plating in standardized salt spray corrosion tests (ASTM B117) by 3–5x, maintaining protection in harsh winter, coastal, and high-humidity environments.
Eco-Friendly & Longer-Lasting
The water-based GEOMET® formula contains no heavy metals, no solvents, and no hexavalent chromium — making it compliant with the most stringent environmental regulations globally, including EU ELV (End of Life Vehicle) Directive.
For Ghost Rotors customers, this means:
- Rotors that look clean longer — no orange surface rust forming on visible surfaces between brake events
- Protection that holds at drilled holes and slot edges — areas where zinc plating typically fails first
- Reduced long-term corrosion in road salt environments, coastal climates, and wet regions
Combined with our 2-piece rotor design and carbon ceramic pads, GEOMET® coating is the final layer of a complete, long-lasting brake system.
