DBA DBA42280 Series HD Plain Disc Brake Rotor - 4000 360mm

The DBA DBA42280 is a 4000 Series HD single-piece disc brake rotor engineered as a direct OE replacement for drivers who demand upgraded braking performance beyond standard factory levels. Featuring a smooth OE-style rotor finish, the HD variant delivers all the performance benefits of the 4000 Series while maintaining a stock appearance — making it especially popular in controlled race divisions and for enthusiasts who prefer a clean, understated look.

Key Features:

• XG-150 High Carbon Alloyed Iron Construction: Cast from premium XG-150 high carbon alloyed iron for superior strength, heat tolerance, and long-term durability under demanding braking conditions
• Thermal Stability Profiling (TSP): Each rotor undergoes DBA's proprietary TSP heat treatment process, which realigns the iron's microstructure to dramatically increase resistance to warping and thermal fatigue
• Kangaroo Paw Ventilation System: DBA's patented vane design uses 144 diamond and teardrop-shaped pillars to deliver up to 30% more surface area and up to 20% greater cooling efficiency compared to traditional straight-vane rotors
• CBN Machine Turned Finish: Cubic Boron Nitride precision machining minimises disc thickness variation, reducing the risk of pad knock and premature wear
• Thermographic Heat Paint Markings: Color-changing paint indicators alert you when the rotor has reached critical temperature thresholds, helping monitor braking performance and rotor fatigue
• Corrosion-Resistant Coating: Non-friction areas are painted to prevent rust and maintain a clean, professional appearance
• Symmetrical Design: Universal left/right fitment — no need to purchase separate left and right rotors
• Smooth OE-Style Surface Finish: Plain rotor face delivers quiet, confident braking with a factory-correct look

The DBA 4000 Series HD rotor measures 360mm in diameter and is sold individually. It is well-suited for performance street cars, heavily loaded SUVs and 4WDs, and towing applications where heat management and braking reliability are critical. Pair with DBA Street Performance brake pads for optimal system performance.