4000 Series T3 Rear Brake Rotor

The DBA 4000 Series T3 brake rotor is a direct replacement, single-piece performance rotor engineered for drivers seeking braking capabilities beyond standard OE levels. It is specifically designed for the rear axle of the 2004-2007 Subaru Impreza WRX STI. This rotor is constructed from high carbon alloyed iron, which has undergone Thermal Stability Profiling to enhance its ability to handle increased stress and heat during intense braking applications. It features DBAs unique Kangaroo Paw ventilation system, which utilizes a series of diamond and teardrop patterned pillars to achieve up to a 30% increase in surface area and a 20% improvement in cooling efficiency compared to traditional straight vane designs. The T3 slot design builds upon DBAs T2 slot, incorporating additional, precise CNC machined tri-symmetrical slots. This configuration increases the exit points for brake pad friction dust and gases, leading to a quieter, more responsive, and smoother brake pedal feel, thereby boosting the consistency and effectiveness of each brake stop. The rotors are also treated with an anti-rust paint on non-friction areas for improved appearance and durability. Additional features include bi-directional use due to symmetrical slotting, CBN machining for a precise finish that minimizes disc thickness variation and pad knock, and thermographic heat paint markings to help monitor braking temperatures. The rotor has a diameter of 290mm, a height of 67.5mm, a thickness of 18mm (minimum 16mm), and a centering diameter of 58mm, with 10 holes and a pitch circle diameter of 100 & 114.3mm.