DBA DBA4984S 4000 Series T3 Slotted Brake Rotor

The DBA DBA4984S is a 4000 Series T3 slotted brake disc rotor engineered for drivers who demand superior stopping performance beyond standard OEM levels. Sold individually, this single-piece direct-replacement rotor combines DBA's advanced metallurgy, proprietary heat treatment, and patented slot technology into one high-performance package.

T3 Tri-Symmetrical Slot Design:

Building upon DBA's T2 slot foundation, the T3 slot pattern features 48 CNC-machined tri-directional curved slots that provide more exit points for brake pad friction dust and gases. Compared to conventional straight slots, the curved design significantly reduces braking noise while maintaining pad surface integrity. The universal bi-directional slot design eliminates the need for separate left and right rotor configurations.

Key Features:

• XG-150 High-Carbon Alloyed Iron — Premium-grade iron alloy with a dense metal matrix for long wear and consistent stopping power
• TSP (Thermal Stability Profiling) — Proprietary heat treatment process that aligns the grain structure of the iron at the atomic level, dramatically improving the rotor's ability to withstand extreme and prolonged heat
• Kangaroo Paw Ventilation — Patented internal vane system using 144 diamond and teardrop-shaped pillars, delivering up to 30% more surface area and 20% improved cooling efficiency versus traditional straight-vane designs
• Thermo-Graphic Paint Markings — Heat-sensitive paint on the rotor's outer edge changes color at specific temperature thresholds, allowing monitoring of peak braking temperatures and rotor fatigue
• CBN (Cubic Boron Nitride) Machine Finish — Precision-turned friction surface minimizes disc thickness variation, reducing the potential for pad knock-back and premature wear
• Black High-Temperature Coating — Applied to all non-friction areas to prevent rust and enhance appearance
• Centre split core castings for increased heat transfer and thermal efficiency
• Slots continually de-glaze brake pads, improving efficiency and reducing rotor scoring
• Slotting combats out-gassing, where gas from pad bonding agents can form a cushion between pad and rotor, reducing braking power

The DBA 4000 Series T3 is the ideal upgrade for high-performance street driving, track days, rally applications, 4x4 and SUV use, and light utility vehicles. Manufactured to QS-9000 quality standards, this rotor delivers confident, fade-resistant braking in demanding conditions.