DBA DBA43124L 4000 Series HD Left Disc Brake Rotor

The DBA DBA43124L is a 4000 Series HD left-hand disc brake rotor engineered by Disc Brakes Australia (DBA) as a direct, single-piece replacement rotor delivering performance above standard OE levels. The HD variant features a smooth OE-style rotor finish, making it ideal for drivers seeking the full benefit of DBA's 4000 Series technology while maintaining a factory-style appearance.

Key Features:

• XG-150 High Carbon Alloyed Iron Construction — cast from premium high-carbon iron for superior strength and thermal resilience under demanding braking conditions
• Thermal Stability Profiling (TSP) — a proprietary DBA heat-cycling process that relieves internal manufacturing stresses, resulting in maximum rotor stability and reduced metal fatigue during intense braking
• Kangaroo Paw Ventilation — DBA's patented vane design featuring 144 diamond and teardrop-patterned pillars delivers up to a 30% increase in surface area and 20% improvement in cooling efficiency over traditional straight-vane rotors
• Thermo-Graphic Heat Paint (TGHP) — colour-coded paint markings change at specific temperature thresholds to help monitor rotor temperatures and guide pad selection
• CBN Machine-Turned Finish — Cubic Boron Nitride machining minimises disc thickness variation and reduces the risk of pad knock and premature wear
• Painted Non-Friction Areas — rust-inhibiting coating on non-braking surfaces enhances appearance and longevity
• Left-Hand Specific (L) — directionally designated for correct installation on the left side of the vehicle
• OE-Style Smooth Finish (HD) — smooth rotor face suitable for controlled applications and drivers preferring an OE-style aesthetic

DBA's 4000 Series HD rotors are a proven upgrade over stock brake components, combining Australian-engineered precision manufacturing with materials and processes developed through extensive motorsport and real-world testing. This rotor is packaged in moisture-proof corrosion-protection packaging to ensure it arrives in perfect condition.