DBA DBA4660S 4000 Series T3 Slotted Disc Brake Rotor

The DBA DBA4660S is a 4000 Series T3 slotted disc brake rotor from Disc Brakes Australia (DBA), engineered as a direct-fit, single-piece performance upgrade above standard OE braking levels. Designed for drivers who demand more from their brake system, the 4000 Series T3 combines advanced metallurgy, proprietary heat treatment, and DBA's patented slot geometry into a rotor built for both spirited street driving and demanding performance applications.

T3 Tri-Symmetrical Slot Design:

Building on DBA's T2 slot foundation, the T3 design features additional CNC-machined tri-symmetrical curved slots, increasing the number of gas and friction dust exit points across the rotor face. This results in a quieter, more responsive, and smoother brake pedal feel while continuously de-glazing brake pads for consistent bite and reduced rotor scoring.

Key Features:

• T3 Bi-Directional Slot Design – Tri-symmetrical slots eliminate the need for directional rotors, allowing a single rotor to serve either side
• Patented Kangaroo Paw Ventilation – 144 diamond and teardrop-shaped pillars deliver up to 30% more surface area and 20% greater cooling efficiency versus traditional straight-vane designs
• XG-150 High Carbon Alloyed Iron – Premium alloy formulation minimizes warping and cracking, improving thermal capacity and prolonging rotor service life
• Thermal Stability Profiling (TSP) – Proprietary heat treatment process realigns the iron's microstructure, increasing rotor stability and durability under intense, repeated braking
• Thermo-Graphic Paint Markings – Heat-sensitive paint on the rotor's outer edge changes color at specific temperature thresholds, providing a clear visual indicator for monitoring rotor fatigue and peak braking temperatures
• CBN Machine-Turned Finish – Cubic Boron Nitride machining minimizes disc thickness variation, reducing the risk of pad knock and premature wear
• Centre Split Core Castings – Enhances heat transfer and thermal efficiency throughout the rotor body
• Corrosion-Resistant Paint on Non-Friction Areas – Protects the hat and non-contact surfaces from rust and corrosion
• QS-9000 Manufacturing Standards – Produced to stringent quality standards for consistent, long-lasting stopping power
• Sold Individually – Order two for a complete axle set

The DBA 4000 Series T3 is the ideal upgrade for performance-minded drivers seeking proven braking improvement over stock rotors, with a 12-month manufacturer's warranty for added confidence.