DBA DBA42238 Series HD Brake Disc Rotor - 4000 302mm

The DBA DBA42238 is a 4000 Series HD disc brake rotor delivering a meaningful performance upgrade over standard OE replacement rotors. Sold as a pair, these 302mm rotors feature DBA's smooth OE-style finish — ideal for drivers who want the full engineering benefits of the 4000 Series platform with a clean, factory-style appearance.

Key Features:

• XG-150 High Carbon Alloyed Iron Construction — cast from premium alloy for superior strength and heat resistance under demanding braking loads
• Thermal Stability Profiling (TSP) — enhances the rotor's ability to handle sustained, intense heat without warping or premature wear
• Kangaroo Paw Ventilation — DBA's patented internal vane design features 144 diamond and teardrop-patterned pillars, delivering up to a 30% increase in surface area and 20% improvement in cooling efficiency versus traditional straight-vane designs
• HD Smooth Finish — OE-style rotor surface with no slots or drilling; popular for controlled race divisions and drivers requiring a stock appearance
• Thermographic Heat Paint Markings (THGP) — colour-changing paint stripes indicate peak braking temperatures, providing a visual guide to rotor heat levels and fatigue monitoring
• CBN Machine-Turned Finish — Cubic Boron Nitride precision machining minimises disc thickness variation, reducing the risk of pad knock and premature wear
• Rust-Inhibiting Coating — non-friction areas are painted to prevent corrosion and maintain a clean appearance throughout service life
• Direct Replacement Fitment — single-piece rotor design drops in as a direct OE replacement with no modifications required

DBA's 4000 Series HD rotors are recommended for performance street vehicles, heavily laden utes, SUVs, 4WDs, and towing applications where braking demands exceed what a standard OE rotor can reliably handle. The DBA42238 is a front axle rotor measuring 302mm in diameter.