DBA DBA42155 Series Performance Brake Rotor - 4000

The DBA 42155 is a direct replacement single-piece performance brake rotor from DBA's acclaimed 4000 Series line, engineered for drivers seeking upgraded braking performance beyond standard OE levels. This rotor is specifically designed with a 10-hole bolt pattern for heavy-duty truck applications.

Advanced Thermal Management Technology:

• Kangaroo Paw Ventilation: Features DBA's patented cooling system with 144 diamond and teardrop-patterned pillars that achieve up to 30% increase in surface area and 20% improvement in cooling efficiency compared to traditional straight vane designs
• Thermal Stability Profiling (TSP): Proprietary heat treatment process where XG-150 high carbon alloyed iron undergoes controlled heat cycles to relieve internal stresses, ensuring maximum thermal stability and reduced metal fatigue under extreme braking conditions
• Thermo-Graphic Heat Paint: Temperature-sensitive paint markings change color at specific thresholds to help monitor braking temperatures and rotor condition

Premium Construction Features:

• Cast from XG-150 high carbon alloyed iron for superior heat handling and durability
• CBN (Cubic Boron Nitride) machine-turned finish minimizes disc thickness variation and premature wear
• Centre-split core castings for increased heat transfer and thermal efficiency
• Anti-rust painted non-friction areas to prevent corrosion and enhance appearance
• Black high-temperature coating for lasting protection

DBA 4000 Series rotors are engineered to last up to 3 times longer than conventional rotors while handling the increased stress and heat generated under intense braking applications. Ideal for heavy-duty trucks that demand consistent, reliable braking performance under load.