DBA DBA42672S 4000 Series T3 Slotted Disc Brake Rotor

The DBA DBA42672S is a 4000 Series T3 slotted performance disc brake rotor from Disc Brakes Australia — engineered as a direct-fit, single-piece upgrade rotor for drivers demanding more from their braking system on both the street and track.

Patented T3 Tri-Symmetrical Slot Design

The 4000 Series T3 builds upon DBA's proven T2 slot pattern by adding additional CNC-machined slots, bringing the total to 48 curved slots per rotor face. This tri-symmetrical design is bi-directional, meaning one rotor fits both left and right sides. The increased number of exit points continuously sweeps away brake pad friction dust and gases, delivering a quieter, more responsive, and more consistent pedal feel under all driving conditions.

Key Features:

• Patented Kangaroo Paw vane design — 144 diamond and teardrop-shaped pillars replace conventional straight vanes, boosting cooling efficiency by up to 20% and improving overall rotor strength and stability
• XG-150 High Carbon Alloyed Iron — premium alloy with high iron content and dense metal matrix for superior thermal capacity, stability, and long service life
• Thermal Stability Profiling (TSP) — proprietary heat treatment process realigns the iron microstructure to increase rotor stability, reduce stress, and improve performance under extreme and repeated braking loads
• Thermo-Graphic paint markings — color-change paint indicators on the rotor edge allow monitoring of core braking temperatures and rotor fatigue in real time
• CBN (Cubic Boron Nitride) machine-turned finish — minimizes disc thickness variation, reducing the risk of pad knock, vibration, and premature wear
• Centre-split core castings — improve heat transfer and thermal efficiency through the vented rotor structure
• Corrosion-resistant finish — non-friction areas are painted to prevent rust and maintain appearance
• QS-9000 manufacturing standards — produced to rigorous quality standards for consistent, safe stopping power
• Direct bolt-on fitment — no mechanical modifications required for installation

Ideal for high-performance street driving, track days, and motorsports applications, the DBA 4000 Series T3 delivers fade-free braking performance and extended rotor life. DBA T3 rotors are denoted by the (S) suffix in 4000 Series part numbers.