DBA DBA4546 Series HD Plain Brake Disc Rotor - 4000 Rear

The DBA DBA4546 is a 4000 Series HD plain brake disc rotor designed as a direct-fit rear replacement that delivers upgraded braking performance beyond standard OE levels. Featuring a smooth, OE-style finish, the 4000 Series HD variant is the ideal choice for drivers who want the advanced metallurgy and engineering of DBA's 4000 Series without a slotted or drilled surface — making it particularly popular in controlled race divisions and for street drivers seeking a clean, factory-correct appearance.

Key Features:

• XG-150 High Carbon Alloyed Iron Construction: Cast from premium XG-150 high carbon alloyed iron for superior heat resistance and durability under intense braking conditions
• Thermal Stability Profiling (TSP): DBA's proprietary TSP process optimizes the rotor's ability to handle consistent, extreme heat over prolonged braking events
• Kangaroo Paw™ Ventilation: DBA's patented internal vane design features 144 diamond and teardrop-shaped pillars, delivering up to 30% more surface area and 20% improved cooling efficiency compared to traditional straight-vane designs
• HD Smooth Finish: Plain, non-slotted rotor face provides an OE-style look while retaining all the metallurgical and thermal benefits of the 4000 Series platform
• CBN Machine Turned Finish: Cubic Boron Nitride (CBN) precision machining minimizes disc thickness variation, reducing the risk of pad knock and premature wear
• Thermographic Heat Paint Markings: Color-change paint markings indicate specific temperature thresholds, allowing easy monitoring of braking temperatures and rotor fatigue
• Rust-Resistant Coating: Non-friction areas are painted to prevent corrosion and maintain a clean appearance
• Symmetrical Design: Universal left/right fitment for simplified installation and parts inventory

The DBA 4000 Series HD disc brake rotor is engineered for drivers who demand more from their braking system. Built in Australia with over 40 years of brake manufacturing expertise, DBA's 4000 Series platform bridges the gap between everyday street driving and performance applications — delivering consistent, fade-resistant stopping power on every drive.