DBA DBA42438XS 4000 Series XS Cross-Drilled and Slotted Brake Rotor

The DBA 4000 Series disc brake rotor is a direct replacement single-piece brake rotor designed for drivers seeking upgraded performance braking above and beyond standard OE levels. The XS Gold variant provides all the benefits of the 4000 Series, with a premium non-directional cross-drilled and slotted design, plus an attractive gold finish on the rotor hub.

Advanced Cooling Technology:

• Features DBA's Kangaroo Paw ventilation that implements a series of 144 diamond and teardrop patterned pillars, achieving up to a 30% increase in surface area and 20% improvement in cooling efficiency compared to a traditional straight vane design
• The unique cross-drilled and slotted design increases the number of exit points, allowing more brake pad friction dust and gases to escape through both the cross-drilled holes and slots, resulting in better braking performance
• Symmetrical slots and chamfered drill holes facilitate the exit of friction dust and gases, for a quieter and more responsive pedal feel

High-Performance Materials:

• Cast from high carbon alloyed iron and undergoing Thermal Stability Profiling, DBA's metallurgy can handle the increased stress and heat generated under intense braking applications, time and time again
• CBN (Cubic Boron Nitride) machine turned finish, minimizing disc thickness variation and the potential for pad knock and resulting premature wear
• Paint markings change color at specific temperature thresholds to assist with the monitoring of braking temperatures and rotor fatigue

Painted non-friction areas prevent rust and enhance appearance. Symmetrical slotting and drilling allows for universal left/right use. Note: Drilled rotor configurations are not recommended for heavy off-road or track day usage.