DBA 42225 4000 Series High Performance Rear Brake Rotor

The DBA 42225 is a high-performance rear brake rotor from DBA's 4000 Series HD line, engineered for drivers seeking upgraded braking performance beyond standard OE levels. This direct replacement single-piece rotor features a smooth OE-style finish, making it popular among enthusiasts who want 4000 Series performance benefits while maintaining a factory appearance.

Advanced Metallurgy and Heat Management:

• Cast from XG-150 high carbon alloyed iron for superior strength and durability
• Thermal Stability Profiling (TSP) process relieves internal stresses to handle extreme heat cycles
• Thermo-Graphic Heat Paint markings that change color at critical temperature thresholds
• Enhanced fatigue resistance minimizes surface cracking under demanding conditions

Patented Kangaroo Paw Ventilation:

• Features 144 diamond and teardrop-patterned pillars between rotor faces
• Achieves up to 30% increase in surface area for improved heat dissipation
• Delivers up to 20% improvement in cooling efficiency versus traditional straight vane designs
• Provides additional structural support to friction surfaces under high temperatures

Specifications:

• Rotor Diameter: 330mm (13.0 inches)
• Rotor Thickness: 22mm new / 20mm minimum
• Center Bore: 80mm
• Bolt Pattern: 5-bolt, 114.3mm pitch circle
• Vented design for maximum heat evacuation

DBA 4000 Series rotors are engineered to last approximately 3 times longer than conventional rotors while maintaining consistent braking performance. The HD variant's smooth finish makes it ideal for controlled racing divisions or street applications where an OE appearance is preferred without sacrificing the advanced thermal management and durability of the 4000 Series platform.