DBA DBA4746S 4000 Series T3 Slotted Rear Disc Brake Rotor 307mm

The DBA DBA4746S is a 4000 Series T3 slotted rear disc brake rotor engineered for drivers who demand upgraded braking performance above and beyond standard OE levels. Designed as a direct bolt-on replacement, this single-piece rotor requires no mechanical modifications for installation.

T3 Tri-Symmetrical Slot Technology:

DBA's patented T3 bi-directional slot design builds on the T2 slot foundation by adding CNC-machined tri-symmetrical slots — going from 32 slots in the T2 to 48 precision-machined slots in the T3. These curved, tri-symmetrical slots increase the number of exit points for brake pad friction dust and gases to escape, delivering a quieter, more responsive, and smoother brake pedal feel. The universal slot design eliminates the need for separate left and right rotors.

Key Features:

• T3 Bi-Directional Slot Design — 48 CNC-machined tri-symmetrical slots for superior gas and dust evacuation
• Kangaroo Paw Ventilation — 144 diamond and teardrop-patterned pillars provide up to 30% more surface area and 20% improvement in cooling efficiency vs. traditional straight-vane designs
• XG-150 High Carbon Alloyed Iron — Premium metallurgy for long wear and consistent stopping power, manufactured to QS-9000 quality standards
• Thermal Stability Profiling (TSP) — Proprietary heat treatment process that aligns the grain structure of the iron for enhanced resistance to warping and improved rotor stability
• Thermo-Graphic Heat Paint Markings (THGP) — Color-changing paint on the rotor edge monitors peak braking temperatures and assists in identifying rotor fatigue
• CBN Machine-Turned Finish — Cubic Boron Nitride machining minimizes disc thickness variation and reduces the potential for pad knock and premature wear
• Corrosion-Resistant Coating — Non-friction areas are painted to prevent rust and enhance appearance
• Direct OE Replacement — Bolts on without any mechanical changes; sold individually

Specifications:

• Diameter: 307mm (12.09 in)
• Thickness: 16mm (0.63 in)
• Height: 67.2mm (2.65 in)
• Axle Position: Rear
• Quantity: Sold per rotor

Recommended for high-performance street driving and heavy off-road applications, the DBA DBA4746S delivers consistent, fade-resistant braking performance under extreme conditions.