DBA DBA42699XD Series XD Drilled Dimpled Performance Disc Brake Rotor - 4000

The DBA DBA42699XD is a 4000 Series XD performance disc brake rotor featuring DBA's non-directional cross-drilled and dimpled surface design. Built as a direct OE-replacement single-piece rotor, it delivers upgraded stopping performance above and beyond standard OEM levels for performance-minded drivers.

The XD finish combines cross-drilled holes with dimples, providing enhanced structural integrity over traditional fully-drilled rotor designs while promoting additional cooling benefits above the standard HD specification. Chamfered drill holes facilitate the exit of friction dust and gases, contributing to a quieter, more responsive brake pedal feel.

Key Features:

• Non-Directional XD Design: Cross-drilled holes and dimples for improved cooling and a sporty appearance — symmetrical for universal left/right fitment
• High Carbon Alloy Iron Construction: Cast from XG-150 high carbon alloyed iron for superior strength and heat resistance under intense braking demands
• Thermal Stability Profiling (TSP): DBA's proprietary heat treatment process subjects the iron to controlled heat cycles, relieving internal casting stress and maximizing thermal stability and fatigue resistance
• Kangaroo Paw Ventilation: Patented internal vane design featuring 144 diamond and teardrop-shaped pillars delivers up to 30% more surface area and 20% improved cooling efficiency versus conventional straight-vane designs
• Thermo-Graphic Heat Indicator Paint: Color-changing paint markings on the rotor edge change color at defined temperature thresholds to help monitor braking temperatures and detect rotor fatigue
• Enhanced Structural Support: The DBA mix of dimples and drilled holes provides greater rotor integrity compared to conventional fully-drilled techniques
• Corrosion-Resistant Finish: Non-friction areas are painted to prevent rust and maintain appearance throughout service life
• Direct Bolt-On Replacement: Designed for straightforward installation with no mechanical modifications required

Note: The 4000 Series XD drilled rotor configuration is not recommended for heavy off-road or dedicated track day usage. It is optimally suited for high-performance street driving applications.