DBA DBA4482 4000 Series HD Front Disc Brake Rotor

The DBA DBA4482 is a 4000 Series HD front disc brake rotor from Disc Brakes Australia — a direct-replacement, single-piece performance rotor engineered for drivers who demand braking performance above and beyond standard OE levels. The HD variant features a smooth OE-style rotor finish, making it an ideal choice for controlled race divisions or performance drivers who prefer a clean, stock-appearing rotor without sacrificing upgraded internals.

Key Features:

• High Carbon Alloyed Iron (XG-150): Cast from premium XG-150 high carbon alloyed iron for superior strength and thermal resistance under intense braking conditions
• Thermal Stability Profiling (TSP): DBA's proprietary heat treatment process subjects the rotor to controlled heat cycles, relieving internal stress from manufacturing and realigning the iron microstructure for maximum durability and reduced metal fatigue
• Kangaroo Paw Ventilation: Patented internal vane design featuring 144 diamond and teardrop-shaped pillars, delivering up to 30% more surface area and 20% better cooling efficiency compared to traditional straight-vane rotors
• OE-Style Smooth Finish: The HD (Heavy Duty) designation features a smooth rotor face without slots or drilled holes — ideal for controlled race classes or street drivers preferring OE aesthetics
• Anti-Rust Coating: Non-friction areas are painted to prevent rust and enhance appearance
• CBN Machine-Turned Finish: Cubic Boron Nitride precision machining minimizes disc thickness variation, reducing the potential for pad knock and premature wear
• Centre-Split Core Castings: Improves heat transfer and overall thermal efficiency throughout the rotor body
• Thermographic Heat Paint: Color-change paint markings signal specific temperature thresholds, helping monitor braking temperatures and rotor fatigue

The DBA 4000 Series HD rotor is sold individually and installs as a direct OE replacement. It is backed by DBA's 12-month / 12,000-mile warranty covering defects in materials and workmanship.