DBA DBA43030XD 4000 Series Cross-Drilled & Dimpled Front Brake Rotor

The DBA DBA43030XD is a 4000 Series cross-drilled and dimpled (XD) front disc brake rotor engineered as a direct-fit performance upgrade for Mercedes-Benz GL, GLE, GLS (X166), and ML250 CDI (W166) SUVs. Designed for drivers who demand braking performance beyond stock OE levels, this single-piece rotor combines DBA's advanced metallurgy and thermal engineering in a bolt-on package.

Key Features:

• Cross-Drilled & Dimpled (XD) Design: A unique mix of drilled holes and dimples increases exit points for brake pad friction dust and gases while providing superior structural support compared to fully drilled configurations
• High-Carbon Alloy Iron Construction: Cast from XG-150 high-carbon alloyed iron for superior heat absorption, reduced fade, and long-term durability under demanding braking applications
• Thermal Stability Profiling (TSP): DBA's proprietary heat treatment process subjects the rotor to controlled thermal cycles, relieving internal manufacturing stresses and maximizing thermal stability and fatigue resistance
• Kangaroo Paw Vane Technology: 144 diamond and teardrop-patterned internal pillars deliver up to 30% more surface area and up to 20% improved cooling efficiency versus traditional straight-vane designs
• Thermo-Graphic Heat Paint (TGHP): Color-change paint markings on the rotor edge monitor peak braking temperatures, helping drivers optimize pad selection and assess rotor health
• CBN Machine-Turned Finish: Cubic Boron Nitride machining minimizes disc thickness variation, reducing the risk of pad knock and premature uneven wear
• Symmetrical Drilling: Universal left/right fitment — one part number serves both sides
• Corrosion-Resistant Coating: Non-friction areas are painted to prevent rust and maintain appearance
• Direct OE Replacement: Bolt-on fitment with no modifications required

The DBA 4000 XD Series is ideal for performance-minded owners of heavy SUVs who want enhanced stopping power, cooler running temperatures, and longer rotor life over the factory setup. Drilled rotor configurations are not recommended for heavy off-road or dedicated track day use.