DBA DBA42312 4000 Series HD Front Disc Brake Rotor

The DBA DBA42312 is a 4000 Series Heavy-Duty (HD) front disc brake rotor engineered for drivers who demand performance beyond standard OE levels. Manufactured by Disc Brakes Australia (DBA), this rotor features a smooth OE-style finish — making it a popular choice for load-carrying vehicles, SUVs, 4WDs, and applications where a factory appearance is required, such as controlled race divisions.

Key Features:

• Kangaroo Paw Ventilation: DBA's patented design uses 144 diamond and teardrop patterned internal pillars, delivering up to a 30% increase in surface area and 20% improvement in cooling efficiency versus traditional straight-vane designs
• XG-150 High Carbon Alloyed Iron Construction: Cast from premium high-carbon iron for superior strength and resistance to heat-induced stress and fatigue
• Thermal Stability Profiling (TSP): DBA's proprietary heat-treatment process subjects the iron to controlled, prolonged heat cycles to relieve internal casting stresses, ensuring maximum thermal stability and reduced metal fatigue under demanding conditions
• Thermo-Graphic Heat Paint (TGHP): Heat-sensitive paint markings permanently change color when critical temperature thresholds are exceeded, allowing drivers to monitor peak braking temperatures and assess rotor fatigue
• HD Smooth Finish: OE-style rotor face without slots or drilling — ideal for vehicles requiring a standard appearance or operating in environments where drilled/slotted rotors are not permitted
• Rust-Resistant Coating: Non-friction areas are painted to prevent corrosion and maintain appearance throughout service life
• Heavy-Duty Application Ready: Designed for hard-working vehicles including SUVs, 4WDs, tow vehicles, and demanding environments including mining and fleet use
• Direct OE Replacement: Single-piece design installs in place of the factory rotor with no modifications required

The DBA 4000 Series HD rotor delivers race-proven technology in a street-friendly package. Sold individually — order two for a complete axle replacement.