DBA DBA42325S 4000 Series T3 Slotted Brake Disc Rotor

The DBA DBA42325S 4000 Series T3 Slotted Brake Rotor is a direct-replacement, single-piece performance brake disc engineered for drivers who demand more than factory-level stopping power. Designed to excel in both demanding street and motorsport applications, this rotor is sold individually.

T3 Bi-Directional Slot Design:

• 48 CNC-machined tri-symmetrical curved slots — an upgrade over the 32-slot T2 design — maximize exit points for brake pad friction dust and gases
• Tri-symmetrical slot pattern dampens vibration harmonics for a quieter, smoother brake pedal feel
• Bi-directional design eliminates the need for side-specific rotors, allowing a single rotor to be used on either the left or right side
• Slots continuously de-glaze brake pads, improving bite, reducing fade, and evening out pad wear

Advanced Materials & Construction:

• Cast from XG-150 high-carbon alloyed iron for superior strength, thermal capacity, and long-term durability
• Proprietary Thermal Stability Profiling (TSP) heat treatment process stabilizes new castings, reduces internal metal stress, and improves overall rotor quality
• Kangaroo Paw pillar vane ventilation features 144 diamond and teardrop-shaped internal pillars, delivering up to a 30% increase in surface area and up to 20% improvement in cooling efficiency compared to traditional straight-vane designs
• Centre-split core castings promote increased heat transfer and thermal efficiency
• CBN (Cubic Boron Nitride) machine-turned finish minimizes disc thickness variation, reducing the potential for pad knock and premature wear

Quality & Monitoring Features:

• Manufactured to QS-9000 quality standards using premium-grade materials with a high iron content and dense metal matrix
• Thermo-Graphic paint markings on the rotor edge change color at specific temperature thresholds, allowing effective real-time monitoring of braking temperatures and rotor fatigue
• Protective coating applied to all non-friction surfaces to prevent rust and enhance appearance

DBA (Disc Brakes Australia) has been engineering high-performance brake rotors for over 40 years, working alongside race teams and manufacturers to refine every aspect of their designs. The 4000 Series T3 is DBA's most advanced single-piece rotor, delivering fade-free performance on the track and confident, consistent stopping power on the street.