DBA DBA42636 Series HD Solid Brake Disc Rotor - 4000

The DBA DBA42636 is a 4000 Series HD solid disc brake rotor from Disc Brakes Australia (DBA), engineered as a direct-fit, single-piece replacement rotor for drivers seeking braking performance that exceeds standard OE levels.

The 4000 Series HD variant features a smooth OE-style rotor finish, making it ideal for drivers who want the full performance benefits of DBA's 4000 Series technology while maintaining a factory appearance — including those in controlled race divisions where a slotted or drilled finish is not permitted.

Key Features:

• Kangaroo Paw Ventilation: DBA's patented vane design uses 144 diamond and teardrop-shaped pillars to deliver up to a 30% increase in surface area and up to 20% improvement in cooling efficiency versus traditional straight-vane designs
• High Carbon Alloy Construction: Cast from XG-150 high carbon alloyed iron for superior thermal capacity and resistance to cracking under repeated hard stops
• Thermal Stability Profiling (TSP): A DBA proprietary heat treatment process that subjects the rotor to controlled heat cycles, relieving internal manufacturing stresses for maximum thermal stability and reduced metal fatigue
• Thermo-Graphic Paint Markings: Heat-sensitive paint markers on the rotor's outer edge change color at specific temperature thresholds to help monitor braking temperatures and rotor fatigue
• Smooth OE-Style Finish: Clean, non-slotted, non-drilled rotor face for an OEM look with upgraded internal performance
• Rust-Resistant Coating: Non-friction areas are painted to prevent corrosion and enhance appearance
• Direct Bolt-On Replacement: Designed to install without modification for a straightforward, professional installation

DBA's 4000 Series rotors are manufactured to QS-9000 quality standards using premium-grade materials with a high iron content and dense metal matrix, resulting in consistent stopping power and long service life. The DBA42636 is the right choice for drivers who want a meaningful upgrade over stock without compromising on fitment or appearance.