DBA DBA42537S 4000 Series T3 Slotted Brake Disc Rotor

The DBA DBA42537S 4000 Series T3 Slotted Brake Rotor is a direct-fit, single-piece performance disc brake rotor engineered for drivers who demand more from their braking system — on the street, on the track, or anywhere in between. Sold individually, this rotor is built on DBA's (Disc Brakes Australia) proven 4000 Series platform with the addition of their patented T3 bi-directional slot design for maximum stopping performance.

Patented T3 Tri-Symmetrical Slot Design:

• Features 48 CNC-machined curved slots per rotor — an upgrade over the 32-slot T2 design — providing more exit points for brake pad friction dust and gases
• Tri-symmetrical, bi-directional slot pattern eliminates the need for directional (handed) rotors, allowing universal left/right fitment
• Slots continuously de-glaze brake pad surfaces, improving bite, reducing fade, and extending pad life
• Curved slot geometry dampens vibration harmonics for a quieter, smoother pedal feel

Premium Materials & Construction:

• Cast from XG-150 high-carbon alloyed iron for superior strength, thermal capacity, and thermal stability
• Manufactured to QS-9000 quality standards with a dense metal matrix for long wear and consistent stopping power
• Patented Kangaroo Paw pillar vane venting features 144 diamond- and teardrop-shaped pillars for enhanced cooling efficiency — up to 20% better than conventional rotor designs
• Centre-split core castings further improve heat transfer and thermal efficiency
• CBN (Cubic Boron Nitride) machine-turned finish minimizes disc thickness variation and reduces potential for pad knock and premature wear

Thermal Stability Profiling (TSP) & Heat Monitoring:

• Proprietary TSP heat treatment process realigns the microstructure of the iron, stabilizing new castings and increasing rotor stability and durability over time
• Thermo-Graphic paint markings on the rotor's outer edge change color at specific temperature thresholds, allowing drivers to monitor core braking temperatures and detect rotor fatigue

Finish & Appearance:

• Non-friction areas are painted to resist corrosion and maintain a clean appearance over the rotor's service life
• Sold as a single rotor (one per pack)

The DBA 4000 Series T3 is DBA's top-performing single-piece rotor, ideal for high-performance street driving, track days, drifting, and motorsport applications. It installs directly onto the vehicle with no mechanical modifications required.