DBA DBA42661S 4000 Series T3 Slotted Brake Disc Rotor

The DBA DBA42661S 4000 Series T3 Slotted Brake Disc is DBA's premier single-piece performance brake rotor, engineered for demanding street and track applications. Built from XG-150 high carbon alloyed iron, this rotor delivers superior thermal capacity and long-term durability under repeated hard braking.

Key Features:

• Patented T3 Tri-Symmetrical Slot Design: 48 precision CNC-machined curved slots arranged in a tri-symmetrical pattern for quieter operation, improved pad bite, and more consistent pedal feel
• T3 Slotting Benefits: Slots continuously de-glaze brake pads, evacuate friction dust and gases, reduce fade, and help dissipate water in wet conditions
• Thermal Stability Profiling (TSP): DBA's proprietary heat treatment process realigns the microstructure of the iron, improving rotor stability, durability, and heat-handling capacity over extended periods
• Patented Kangaroo Paw Vane Design: 144 diamond and teardrop patterned pillar vanes replace conventional straight vanes, increasing cooling efficiency by up to 20% and improving structural strength
• Centre Split Core Castings: Enhances heat transfer and overall thermal efficiency
• CBN (Cubic Boron Nitride) Machine Turned Finish: Minimizes disc thickness variation to reduce pad knock and premature wear
• Thermo-Graphic Paint Markings: Color-changing temperature indicators on the rotor's outer edge allow easy monitoring of braking temperatures and rotor fatigue
• Rust-Inhibiting Painted Non-Friction Areas: Protects non-contact surfaces to prevent corrosion and maintain appearance
• Manufactured to QS-9000 Quality Standards: Using premium-grade, high iron content materials for consistent, safe stopping power

The DBA 4000 Series T3 is the ideal upgrade for high-performance street driving and motorsport applications. Sold individually — one rotor per purchase. OEM part number suffix (S) denotes the T3 slotted configuration.