DBA DBA4478 Series HD Brake Disc Rotor - 4000 Front

The DBA DBA4478 is a 4000 Series HD front disc brake rotor engineered by Disc Brakes Australia (DBA) for drivers who demand performance braking capability above and beyond standard OEM levels. The HD variant features a smooth OE-style rotor finish, making it ideal for drivers who want the full benefits of the 4000 Series platform while maintaining a stock appearance — including those competing in controlled race divisions with appearance regulations.

Key Features:

• Direct OE Replacement: Single-piece design that installs with no mechanical modifications required
• XG-150 High Carbon Alloyed Iron Construction: Premium metallurgy engineered to withstand increased stress and heat generated during intense braking applications
• Thermal Stability Profiling (TSP): DBA's proprietary heat-cycling process relieves internal manufacturing stresses, maximizing thermal stability and reducing metal fatigue in demanding applications
• Kangaroo Paw Vane Ventilation: Patented internal vane design featuring 144 diamond and teardrop-shaped pillars delivers up to 30% more surface area and up to 20% improvement in cooling efficiency compared to traditional straight vane designs
• Thermo-Graphic Paint Markings: Temperature-sensitive paint markings on the rotor edge change color at specific heat thresholds to help monitor braking temperatures and rotor fatigue
• Corrosion-Resistant Finish: Non-friction areas are painted to prevent rust and maintain appearance throughout the rotor's service life
• Smooth OE-Style Surface: HD spec finish provides a clean look while still delivering the full 4000 Series performance and durability advantage

The DBA 4000 Series HD is the ideal upgrade for performance-oriented street drivers and motorsport enthusiasts who require a reliable, high-carbon rotor that handles repeated hard braking without fade or premature wear. Sold as a single rotor.