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The DBA 4000 Series plain rotor for 2001–2006 BMW M3 E46 rear applications is a direct-replacement brake rotor cast from XG-150 high-carbon alloyed iron and treated with Thermal Stability Profiling. DBA's Kangaroo Paw ventilation uses 144 diamond and teardrop pillars to increase surface area and cooling, delivering up to 30% more contact area and roughly 20% improved cooling versus straight vanes. The HD option retains a smooth OE-style finish for a controlled appearance.
DBA 01-06 BMW M3 E46 Rear 4000 Series Plain Rotor
