DBA 4000 Series T3 Slotted Rear Brake Rotor for 2004-2014 Subaru Impreza WRX STI - 170mm Handbrake (DBA42657S)

The DBA 4000 Series T3 is a high-performance, single-piece slotted rear brake rotor designed for demanding street and track applications. Engineered for 2004-2014 Subaru Impreza WRX STI models, these rotors provide a significant upgrade in thermal capacity and braking consistency over standard equipment.

Constructed from XG150 high-carbon alloyed iron and subjected to Thermal Stability Profiling (TSP), these rotors are built to handle the extreme heat cycles of spirited driving and track use. The patented Kangaroo Paw ventilation system utilizes a unique series of 144 pillars and spikes to increase surface area and structural strength, significantly improving cooling efficiency compared to traditional straight-vane designs.

• Tri-Symmetrical T3 Slots: Curved slots reduce vibration and noise while ensuring a clean pad surface for consistent pedal feel.
• Kangaroo Paw Venting: Advanced pillar design maximizes heat dissipation and reduces the risk of brake fade.
• XG150 High Carbon Alloy: Increases thermal shock resistance to prevent cracking under heavy load.
• Thermographic Temperature Monitoring: Includes heat-sensitive paint markings that change color to allow for easy monitoring of peak rotor temperatures.
• 170mm Handbrake Fitment: Specifically designed to accommodate the standard 170mm internal parking brake diameter.
• Protective Coating: Includes a moisture-resistant coating on the hub to prevent corrosion and maintain a clean appearance.

Manufacturer Part Number: DBA42657S