DBA DBA4478XS 4000 Series Drilled and Slotted Performance Brake Rotor

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

Advanced Thermal Management:

• 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, while the Kangaroo Paw ventilation implements a series of 144 diamond and teardrop patterned pillars for up to a 30% increase in surface area and 20% improvement in cooling efficiency
• 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
• Paint markings change color at specific temperature thresholds to assist with the monitoring of braking temperatures and rotor fatigue

Key Features:

• Symmetrical slots and chamfered drill holes facilitate the exit of friction dust and gases for a quieter and more responsive pedal feel
• Symmetrical slotting and drilling for universal left/right use
• Painted non-friction areas to prevent rust and enhance appearance
• Cubic Boron Nitride (CBN) machine turned finish minimizes disc thickness variation
• Centre-split core castings for increased heat transfer and thermal efficiency

The XS version is not recommended for motorsports usage, but is more than capable for high performance street use. While providing a similar performance benefit to the T3 slot, the XS Gold is a popular alternative for show cars.