DBA DBA42769 Series HD Performance Disc Brake Rotor - 4000

The DBA DBA42769 is a 4000 Series HD disc brake rotor — a direct replacement, single-piece performance rotor engineered for drivers who demand braking performance above and beyond standard OE levels. The HD (Heavy Duty) variant features a smooth OE-style rotor finish, making it ideal for drivers who want the full performance benefits of the 4000 Series platform with a clean, factory-style appearance — including use in controlled race divisions where slotted or drilled rotors are not permitted.

Key Features:

• XG-150 High Carbon Alloyed Iron Construction — cast from premium iron alloy for superior strength, durability, and thermal capacity
• Thermal Stability Profiling (TSP) — proprietary heat treatment process that increases the rotor's capacity to handle constant and extreme heat over prolonged braking sessions
• Kangaroo Paw™ Ventilation — patented vane design featuring 144 diamond and teardrop patterned pillars, delivering up to a 30% increase in cooling surface area and 20% improvement in cooling efficiency versus traditional straight-vane designs
• CBN Machine-Turned Finish — Cubic Boron Nitride machining minimizes disc thickness variation, reducing the potential for pad knock and premature wear
• Smooth HD Surface — OE-style plain face finish suitable for street use and controlled racing classes
• Temperature Monitoring Paint Markings — paint indicators change color at specific temperature thresholds to assist in monitoring braking temperatures and rotor fatigue
• Rust-Resistant Coating on Non-Friction Areas — painted non-friction surfaces prevent rust and enhance appearance
• Direct OE Replacement Fitment — single-piece design for straightforward installation

Built by Disc Brakes Australia (DBA), a manufacturer with over 40 years of experience in high-performance braking solutions, the 4000 Series HD rotor delivers a measurable upgrade over stock brake components while maintaining everyday drivability and a clean, understated look.