DBA DBA42700 4000 Series HD Front Disc Brake Rotor 338mm

The DBA DBA42700 is a 4000 Series HD front disc brake rotor engineered by Disc Brakes Australia (DBA) as a direct OE-replacement upgrade. Designed for drivers seeking upgraded performance braking above and beyond standard OE levels, the 4000 Series HD delivers all the core benefits of the 4000 Series platform in a smooth, OE-style rotor finish.

HD Variant: The 4000 Series HD features a smooth OE-style rotor finish, popular for drivers looking for the benefits of a 4000 Series rotor but requiring an OE-style look, such as controlled race divisions.

Advanced Metallurgy & Thermal Stability: Cast from XG-150 high carbon alloyed iron and undergoing Thermal Stability Profiling (TSP), DBA's metallurgy is able to handle the increased stress and heat generated under intense braking applications, time and time again. TSP is a DBA proprietary process in which XG-150 grey iron is subjected to prolonged heat cycles under strictly controlled conditions to relieve internal stresses from manufacturing, ensuring maximum thermal stability and reduced metal fatigue in extremely demanding applications.

Kangaroo Paw Ventilation: Featuring DBA's patented Kangaroo Paw ventilation that implements a series of 144 diamond and teardrop patterned pillars, DBA achieves up to a 30% increase in surface area and 20% improvement in cooling efficiency compared to a traditional straight vane design.

Thermographic Heat Paint Markings: Standard on every 4000 Series rotor is the inclusion of Thermographic Heat Paint Markings, allowing the user to identify peak braking temperatures in extreme conditions.

Key Features:

• Rotor Diameter: 338mm
• Axle Position: Front
• Sold as: Single rotor (2 required per vehicle)
• Painted non-friction areas to prevent rust and enhance appearance
• Symmetrical slotting and/or drilling for universal left/right use
• Superior quality rotor able to withstand greater levels of heat, for a longer service life and considerable resistance to warping from excessive heat events
• XG-150 high carbon alloyed iron construction
• Thermal Stability Profiling (TSP) treatment

4000 Series rotors are recommended for performance street cars, heavily laden utes or 4WDs, and for towing. This is a single rotor — two are required per axle.