DBA DBA42021 4000 Series HD Rear Brake Rotor

The DBA 4000 Series HD brake rotor is a direct replacement single-piece performance rotor designed for drivers seeking upgraded braking performance above and beyond standard OE levels. The HD variant features a smooth OE-style rotor finish, making it popular for drivers who want the benefits of a 4000 Series rotor but require an OE-style appearance, such as controlled race divisions.

Premium Metallurgy and Heat Treatment:

• Cast from high carbon alloyed iron and undergoing Thermal Stability Profiling (TSP), DBA's metallurgy can handle the increased stress and heat generated under intense braking applications
• The TSP process subjects XG-150 grey iron to prolonged heat cycles under strictly controlled conditions to relieve internal stresses sustained from manufacturing, ensuring maximum thermal stability and reduced metal fatigue
• Heat treatment cycles realign the microstructure of the iron for optimal interaction with TSP, increasing the rotor's capacity to handle constant and extreme heat over prolonged periods

Patented Kangaroo Paw Ventilation:

• Features DBA's Kangaroo Paw ventilation that implements a series of 144 diamond and teardrop patterned pillars, achieving up to a 30% increase in surface area and 20% improvement in cooling efficiency compared to traditional straight vane designs
• The Kangaroo Paw design runs cooler, is stronger, and outperforms traditional straight-vane disc rotors with diamond and tear-drop shaped pillars individually spaced between the rotor faces

Additional Features:

• Painted non-friction areas to prevent rust and enhance appearance
• Manufactured by Disc Brakes Australia to industry-leading standards and certification (ISO 9001, QS 9000, TS 16949 and TUV)
• Direct bolt-on replacement for OE rotors with no modifications required
• Sold individually

The DBA 4000 Series rotors are designed to perform in extreme road and race applications, making them ideal for performance street driving, track days, and demanding braking conditions.