DBA DBA42456S 4000 Series T3 Slotted Front Brake Rotor

The DBA DBA42456S is a 4000 Series T3 slotted front brake rotor engineered for drivers seeking a significant upgrade over standard OEM braking performance. Disc Brakes Australia (DBA) is a world-renowned manufacturer with decades of experience supplying high-performance rotors to motorsport and OEM applications alike.

Key Features:

• Patented T3 Bi-Directional Slot Design: Built on DBA's T2 slot foundation, the T3 adds CNC-machined tri-symmetrical slots — increasing from 32 slots (T2) to 48 slots — for more exit points for brake pad friction dust and gases, resulting in a quieter, more responsive pedal feel.
• Kangaroo Paw Pillar Vane Venting: 144 diamond and teardrop-shaped pillars replace conventional straight vanes, delivering up to 20% improvement in cooling efficiency and up to 30% more surface area for superior heat dissipation.
• XG-150 High Carbon Alloyed Iron: Premium alloy with high iron content and a dense metal matrix improves strength, thermal capacity, and thermal stability under repeated hard braking.
• Thermal Stability Profiling (TSP): DBA's proprietary heat treatment process realigns the microstructure of the iron to stabilize new castings, increase rotor durability, and improve performance under extreme heat.
• Thermo-Graphic Paint Markings: Color-changing paint on the outer rotor edge alerts the driver when core braking temperatures exceed optimum thresholds, helping monitor rotor health and fatigue.
• CBN Machine Turned Finish: Cubic Boron Nitride machining minimizes disc thickness variation, reducing the risk of pad knock and premature wear.
• Symmetrical, Non-Directional Design: Universal left/right fitment — a single rotor fits both sides, simplifying installation and inventory.
• Rust-Inhibiting Paint: Non-friction areas are coated to prevent corrosion and maintain appearance.
• Direct Bolt-On Replacement: Designed to fit in place of the OEM rotor with no mechanical modifications required.
• QS-9000 Manufacturing Standards: Built to stringent quality standards for consistent, reliable stopping power.

The DBA 4000 Series T3 is the ideal upgrade for performance-minded drivers who demand more from their brake system. Sold individually — order two for a complete axle set.