DBA DBA42733S 4000 Series T3 Slotted Brake Disc Rotor

The DBA DBA42733S is a 4000 Series T3 Slotted brake disc rotor from Disc Brakes Australia (DBA), engineered as a direct-fit, single-piece performance upgrade over standard OEM brake rotors. Designed for drivers who demand enhanced stopping power and superior heat management, this rotor is sold individually.

T3 Tri-Symmetrical Slot Design:

• Advances on the T2 slot design by increasing from 32 to 48 gas-scavenging slots per rotor face, with tri-symmetrical curved slots that dampen vibration harmonics
• CNC-machined tri-symmetrical slots provide additional exit points for brake pad friction dust and gases, resulting in a quieter, more responsive, and smoother brake pedal feel
• Symmetrical slotting allows for universal left/right fitment — no directional rotor confusion

Advanced Metallurgy & Construction:

• Cast from XG-150 high carbon alloyed iron and treated with Thermal Stability Profiling (TSP) to handle the increased stress and heat of intense braking applications
• Features DBA's Kangaroo Paw vane design with 144 diamond and teardrop patterned pillars, increasing cooling efficiency by up to 20%, with center-split and evenly distributed pillars for greater strength and stability
• Heat treatment cycles realign the microstructure of the iron, resulting in increased rotor stability and durability
• CBN (Cubic Boron Nitride) machine-turned finish minimises disc thickness variation and reduces the potential for pad knock and premature wear

Thermo-Graphic Temperature Monitoring:

• Three paint marks on each rotor monitor brake rotor temperature and change color as different temperature thresholds are reached, helping drivers avoid dangerous heat levels that cause brake fluid boiling and pedal fade
• Non-friction areas are painted to prevent rust and enhance appearance

The 4000 Series disc brake rotor is a direct replacement single-piece brake rotor, designed for drivers seeking upgraded performance braking above and beyond standard OE levels. DBA provides a limited warranty to the original purchaser for 12 months or 12,000 miles, whichever occurs first.