DBA DBA42021S 4000 Series T3 Slotted Rear Brake Rotor 287 mm

Vehicle Fitment

• 2005-2006 Pontiac GTO (rear brake fitment) - all trims

Features

• 4000 Series T3 performance brake rotor design
• Tri-symmetrical slot pattern for improved pad gas escape
• Kangaroo Paw ventilation with 144 diamond/teardrop vanes
• Cast from high-carbon XG-150 alloy iron for heat resistance
• CNC machine-turned finish improves uniform thickness
• Bi-directional slotting allows universal left/right installation
• Painted non-friction surfaces reduce rust formation
• Direct OEM replacement - no hub modifications required

Specifications

• Brand: DBA (Disc Brakes Australia)
• Part Number: DBA42021S
• Series: 4000 Series T3
• Position: Rear left/right (sold individually)
• Rotor Diameter: 287 mm (11.3 in)
• Nominal Thickness: 18 mm
• Discard Thickness: ~18 mm
• Overall Height: ~79.6 mm
• Center Hole Diameter: ~70 mm
• Stud/Lug Hole Count: 5
• Surface Type: Slotted
• Vane Type: Kangaroo Paw ventilation

Included Components

• 1x DBA 4000 Series T3 Slotted Rear Brake Rotor (DBA42021S)
• Installation guide

Product Description

The DBA DBA42021S is a high-performance **4000 Series T3 slotted rear brake rotor** engineered to elevate braking response and heat dissipation over standard OEM rotors. Featuring a tri-symmetrical slot pattern and advanced Kangaroo Paw vane ventilation, this rotor maximizes gas and dust evacuation while improving thermal transfer - helping maintain consistent pad friction and brake feel under demanding conditions.

Crafted from premium **XG-150 high-carbon alloyed iron** and finished with corrosion-resistant paint on non-friction areas, the DBA42021S is designed for durability and long service life. Its bi-directional slot design eliminates the need for left/right specific rotors and allows straightforward installation as a direct replacement for the rear brakes on compatible vehicles, notably the **2005-2006 Pontiac GTO**. Ideal for performance-oriented drivers seeking improved brake stability, reduced warping, and enhanced heat management during spirited driving.