Audi Oem Grey Hat Brake Discs

Precision-engineered gray-cap brake discs manufactured by Chinese producers to Audi OEM standards deliver premium braking performance through their gray-cap design, specifically developed for Audi braking systems. Developed in strict adherence to Audi's original equipment (OE) specifications, these discs feature perfectly matched mounting holes and locating shoulders for seamless integration with brake calipers and hubs. They require no modifications for direct installation and are compatible with Audi's ESP electronic stability system and AEB automatic emergency braking function, catering to diverse scenarios including luxury business commuting, highway cruising, and family travel.

Featuring an HT300 high-strength gray cast iron rotor body paired with an Audi-specification gray cap, these discs are formed through integral casting and isothermal quenching processes. The rotor body maintains a consistent hardness of 207-255 HBS, delivering impact resistance and wear performance perfectly matched to Audi models' power characteristics. The core design incorporates an integrated gray cap structure with dual-spiral ventilation chambers. The gray cap enhances rigidity between the rotor and wheel hub, while 36 equidistant air channels boost cooling efficiency by 35% compared to standard brake rotors. During continuous braking, thermal fade suppression exceeds 30%, maintaining a stable friction coefficient between 0.38 and 0.42. Additionally equipped with a cathodic electrophoretic anti-corrosion coating, it forms a dense protective layer. After 500 hours of salt spray testing, no significant corrosion was observed, making it suitable for humid, coastal, and other highly corrosive environments.

Craftsmanship details showcase OEM quality: Integrated gray cap dynamic balancing calibration (error ≤5g·cm) reduces brake resonance noise to below 40 decibels, meeting Audi's luxury cabin quietness requirements; Laser-textured friction surfaces create micron-level micro-patterns that rapidly disperse water and brake dust, enhancing wet-road braking stability. Precise coating-to-friction surface zoning ensures uniform wear, meeting Audi's high-intensity usage demands.

Product Overview

Engineered to OE-equivalent dimensions, this brake disc (rotor) ensures direct bolt-on fitment for straightforward replacement. Manufactured in Shandong, China, it delivers smooth and quick stopping performance with low noise and low dust, meeting the daily driving and general service requirements of the global aftermarket.

Specification Table

Key Features

• Premium Material: Made of Gray Iron and High Carbon (G3000, GG15HC, DIN, SAE) for optimal thermal stability, effectively resisting brake fade and thermal fatigue under repeated braking.

• Precision Machining: Expert turning and grinding processes guarantee flat, uniform friction surfaces, minimizing lateral runout and disc thickness variation to reduce vibration and noise.

• Anti-Corrosion Finishes: Multiple anti-rust options (oiled, painted, coated, zinc dust) in gray, black, metal, or gold to protect hubs and non-friction areas from moisture and road salt.

• Global Certifications: Produced under IATF16949, ISO14001, and ISO45001 systems; compliant with ECE R90 and AMECA standards for international quality assurance.

• OEM & Packing Support: Flexible private label and customized labeling (MOQ friendly) with various transport packages (box, carton, pallet, bulk) for consolidated global shipments.

Installation & Bedding-in Guidance

For best results, replace discs in axle pairs with compatible brake pads. Avoid aggressive braking during the initial 300 km; gradual, moderate stops allow the pad and disc surfaces to mate evenly, minimizing noise and extending service life.

Storage & Logistics Notes

Store in a dry, well-ventilated warehouse away from corrosive substances. For sea freight, use moisture-proof inner packaging and desiccants to protect oiled or coated surfaces from oxidation before installation.

• 100% critical dimensions, runout and DTV inspection 

• Material physical and chemical inspection

• Test shear strength, compressibility, density, flatness and parallelism 

• Test performance and noise/NVH