DBA DBA4661S 4000 Series T3 Slotted Rear Brake Rotor 300mm

The DBA DBA4661S 4000 Series T3 Slotted Brake Rotor is a high-performance, direct-replacement rear disc brake rotor engineered for drivers who demand braking performance above and beyond standard OE levels. Sold individually, two are required per vehicle axle.

T3 Bi-Directional Slot Design:

Building on DBA's proven T2 slot foundation, the patented T3 slot design features additional CNC-machined tri-symmetrical slots — bringing the total to 48 curved slots per rotor. This increases the number of exit points for brake pad friction dust and gases, delivering a quieter, more responsive, and smoother brake pedal feel. The symmetrical, bi-directional design allows universal left/right fitment with no need for directional-specific parts.

Key Features:

• Patented T3 Bi-Directional Slotting — 48 tri-symmetrical curved slots for aggressive pad bite and superior gas/dust evacuation
• Kangaroo Paw Pillar Vane Venting — 144 diamond and teardrop-shaped internal pillars deliver up to 20% improved cooling efficiency over conventional straight-vane designs
• XG150 High-Carbon Alloyed Iron Construction — enhanced thermal capacity, strength, and stability under intense and repeated braking loads
• Thermal Stability Profiling (TSP) — proprietary DBA heat treatment process that stabilizes castings, reduces metal stress, and improves long-term rotor quality
• Thermo-Graphic Paint Markings — three color-changing paint marks on the rotor edge monitor core braking temperatures and rotor fatigue in real time
• CBN Machine-Turned Finish — Cubic Boron Nitride finishing process minimizes disc thickness variation, reducing the risk of pad knock and premature wear
• Centre Split Core Casting — promotes even heat transfer and improved thermal efficiency across the rotor face
• Corrosion-Resistant Paint — applied to all non-friction surfaces to prevent rust and maintain appearance
• Rotor Diameter: 300mm | Axle Position: Rear

The DBA 4000 Series T3 is manufactured to QS-9000 quality standards using premium-grade materials, making it an ideal upgrade for performance street driving, 4x4 off-road use, and towing applications. This rotor is sold as a single unit.