DBA DBA42048S 4000 Series T3 Slotted Brake Disc Rotor

The DBA DBA42048S 4000 Series T3 Slotted Brake Disc is a direct replacement, single-piece performance brake rotor engineered for drivers who demand braking performance above and beyond standard OE levels. Built by Disc Brakes Australia (DBA), this rotor combines advanced metallurgy, proprietary heat treatment, and precision CNC machining to deliver consistent, fade-resistant stopping power on the street and track.

T3 Tri-Symmetrical Slot Design:

• CNC-machined tri-symmetrical slots build on DBA's proven T2 slot design, adding more exit points for brake pad friction dust and gases
• Results in a quieter, more responsive, and smoother brake pedal feel
• Symmetrical slotting allows for universal left/right fitment — no dedicated side required
• Slots continuously de-glaze brake pads, improving efficiency and reducing rotor scoring
• Recommended for high-performance street and track applications

Advanced Metallurgy & Heat Management:

• Cast from XG-150 high-carbon alloyed iron for superior strength and thermal performance
• Thermal Stability Profiling (TSP) — DBA's proprietary heat treatment process subjects each rotor to controlled heat cycles, relieving internal manufacturing stresses and maximizing thermal stability
• TSP improves fatigue resistance and minimizes surface cracking under prolonged heavy braking
• Kangaroo Paw ventilation features 144 diamond and teardrop patterned pillars, delivering up to a 30% increase in surface area and 20% improvement in cooling efficiency versus traditional straight-vane designs
• Thermo-Graphic Heat Paint (TGHP) markings on the rotor edge change color at specific temperature thresholds to assist with monitoring braking temperatures and rotor fatigue

Precision Manufacturing & Finish:

• CBN (Cubic Boron Nitride) machine-turned finish minimizes disc thickness variation and reduces the risk of pad knock and premature wear
• Non-friction areas are painted to prevent rust and enhance appearance
• Centre split core castings for increased heat transfer and thermal efficiency
• Manufactured to QS-9000 quality standards using premium-grade materials

The DBA 4000 Series T3 installs as a direct bolt-on replacement with no mechanical modifications required. It is the ideal upgrade for performance enthusiasts, track day drivers, and anyone looking to significantly improve braking consistency and pedal feel over standard OE rotors.