DBA DBA42615 Series HD Brake Disc Rotor - 4000 Front

The DBA DBA42615 is a front 4000 Series HD disc brake rotor from Disc Brakes Australia, engineered as a direct replacement single-piece rotor for drivers seeking upgraded braking performance above standard OE levels. The HD variant features a smooth, OE-style rotor finish — delivering all the performance benefits of the 4000 Series while maintaining a factory appearance, making it a popular choice for controlled race divisions and enthusiasts who prefer a clean look.

Built from high carbon alloyed iron and processed through DBA's proprietary Thermal Stability Profiling (TSP), the metallurgy is engineered to handle the elevated stress and heat generated under intense, repeated braking conditions. TSP subjects the iron to prolonged, controlled heat cycles to relieve internal manufacturing stresses, ensuring maximum thermal stability and reduced metal fatigue in demanding applications.

Key Features:

• Kangaroo Paw Vane Technology: 144 diamond and teardrop patterned pillars deliver up to 30% more surface area and 20% greater cooling efficiency versus traditional straight-vane designs
• HD Smooth Finish: OE-style rotor surface — all 4000 Series performance benefits with a factory appearance; no part number suffix denotes the HD variant
• High Carbon Alloyed Iron Construction: Superior heat absorption and dissipation for consistent stopping power under load
• Thermal Stability Profiling (TSP): Proprietary heat-cycling process maximizes dimensional stability and reduces fatigue in high-demand applications
• Thermo-Graphic Heat Paint (TGHP): Color-change paint markings indicate peak rotor temperatures, helping monitor braking heat and inform pad selection
• Painted Non-Friction Areas: Rust protection on hat and non-braking surfaces enhances longevity and appearance
• Direct OE Replacement Fit: Single-piece design installs with no modifications; symmetrical design for universal left/right fitment

The DBA 4000 Series HD is ideal for performance street drivers, light track use, and those in controlled racing classes requiring an OE-style rotor finish. Sold individually.