DBA 4000 Series T3 Brake Discs

4000 Series disc brake rotors are a direct replacement single piece brake rotor, designed for drivers seeking upgraded performance braking above and beyond standard OE levels.

Cast from high carbon alloyed iron and undergoing Thermal Stability Profiling, DBA’s metallurgy can handle the increased stress and heat generated under intense braking applications, time and time again.

Featuring DBA’s 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 (as compared to a traditional straight vane design).

4000 Series T3 is the ultimate in direct replacement single piece performance brake rotors Featuring all the benefits of the 4000 Series plus DBA’s patented world renowned T3 bi directional slot design.

Built on the foundations of DBA’s T2 slot, the T3 slot design features additional, precise, CNC machined tri symmetrical slots, resulting in an even quieter, more responsive and smoother brake pedal feel The T3 slot increases the number of exit points for brake pad friction dust and gases to escape through, further increasing the consistency and effectiveness of every brake stop.

We recommend a T3 slot for high performance applications.

After 30 years of design and development with race teams around the world, Disc Brakes Australia developed a proprietary cast iron formulation (XG-150) for use in all of its premium performance disc brake rotors.

DBA’s XG-150 grey iron is high in carbon and alloyed to produce excellent thermal and noise dampening characteristics. This is combined with our patented Kangaroo Paw ventilation design to provide the ultimate in structural strength, noise dampening and thermal stability.

DBA’s trademarked T3 slot design is the ultimate in braking technology, further building on the benefits of DBA’s high performing T2 slot design.

• Revolutionary bi-directional slot design
• Improved 3 way slot design
• Increased number of out-gassing exit points
• Effective removal of brake dust and debris.
• Effective in maintaining consistent friction.

The T3 slot design further increases the number of out-gassing exit points on the rotor surface, and assists in the removal of unwanted dust and debris between the rotor and brake pad, which otherwise could cause pad glazing and loss of brake performance.

The patented Kangaroo Paw ventilation system provides a more efficient method of keeping the rotors cool under the heaviest braking applications. Using a series of 144 diamond and teardrop patterned pillars (or columns) instead of conventional straight cooling vanes, the Kangaroo Paw design increases cooling efficiency by up to 20% when compared with most other conventional ventilated disc rotors.

As well as providing cooler operating temperatures, the Kangaroo Paw system also provides additional support to the friction face. The Kangaroo Paw pillars are evenly spread across the disc face and make the rotor stronger, more stable and more consistent in operation.

This enables the rotor to maintain the fine tolerances over its lifetime better than a straight vane design, which can “balloon” and swell between the vanes when operating at high temperatures. The ventilation system of a brake rotor is best described as the foundation and support between the friction surfaces.

Other than material composition, another major factor that affects the thermal performance of brake rotors is the surface area within the ventilation design. The more surface area, the more heat that can be removed from the brake rotor.

The mass of the brake rotor also plays an important role. The greater the mass, the more heat that can be stored and must be dissipated, this is why the design of the Kangaroo Paw is so effective. This minimises the risk of brake fade and restores normal braking much sooner.