DBA DBA4789S 4000 Series T3 Slotted Rear Brake Rotor

The DBA DBA4789S is a high-performance rear brake rotor from the acclaimed 4000 Series T3 line, engineered for drivers seeking upgraded braking performance beyond standard OE levels. This single-piece vented rotor features a 330mm (13.0-inch) diameter and is designed as a direct replacement for performance street vehicles, heavily loaded 4x4s, and towing applications.

Advanced Material Technology:

• Cast from XG-150 high-carbon alloyed iron for superior strength and thermal resistance
• Thermal Stability Profiling (TSP) heat treatment process aligns grain structure at the atomic level for uniform material properties
• Enhanced thermal capacity handles extreme heat over extended periods without warping or degradation
• Manufactured in Australia to exacting quality standards

Patented Kangaroo Paw Ventilation:

• Features 144 diamond and teardrop-patterned pillars between rotor faces
• Increases cooling efficiency by up to 20% compared to conventional straight-vane rotors
• Provides additional structural support to friction surfaces under extreme heat
• Minimizes brake fade and maximizes consistent stopping power

T3 Tri-Symmetrical Slot Design:

• Precision CNC-machined curved slots arranged in tri-symmetrical pattern
• Dampens vibration harmonics for quieter operation than traditional straight-slot designs
• Increases exit points for brake dust and gases to escape, improving pad-to-rotor contact
• Delivers smoother, more responsive brake pedal feel
• Reduces pad contamination and extends service life of both pads and rotors

Additional Features:

• Non-friction areas painted black for corrosion protection and appearance
• Thermo-Graphic heat paint markings change color at specific temperature thresholds
• Allows monitoring of peak braking temperatures and rotor fatigue
• Nominal thickness: 18mm (0.706 inches), minimum thickness: 16mm
• 5-bolt pattern with 150mm bolt circle diameter and 110mm center bore

DBA's 4000 Series T3 rotors deliver approximately three times longer service life compared to competitive performance rotors, making them ideal for enthusiasts who demand both performance and longevity. Sold individually.