DBA DBA4929XS 4000 Series Drilled and Slotted Brake Rotor

The DBA 4000 Series is a direct replacement single-piece performance brake rotor designed for drivers seeking upgraded braking performance above and beyond standard OE levels. The XS variant features a premium non-directional cross-drilled and slotted design that increases the number of exit points, allowing more brake pad friction dust and gases to escape through both the cross-drilled holes and slots for improved braking performance.

Advanced Materials and Construction:

• Cast from XG-150 high carbon alloyed iron and undergoing Thermal Stability Profiling (TSP), this rotor handles the increased stress and heat generated under intense braking applications
• Features DBA's patented Kangaroo Paw ventilation with 144 diamond and teardrop patterned pillars, achieving up to 30% increase in surface area and 20% improvement in cooling efficiency compared to traditional straight vane designs
• CBN (Cubic Boron Nitride) machine turned finish minimizes disc thickness variation and the potential for pad knock and resulting premature wear

Additional Features:

• Thermo-Graphic Heat Paint markings change color at specific temperature thresholds to assist with monitoring braking temperatures and rotor fatigue
• Painted non-friction areas prevent rust and enhance appearance
• Symmetrical slotting and drilling for universal left/right use

While providing similar performance benefits to the T3 slot design, the 4000 XS Series is a popular alternative for show cars, though drilled rotor configurations are not recommended for heavy off-road or track day usage.