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The DBA 4000 Series plain rotor for 1996–1999 BMW 328i E36 front applications is a direct-replacement rotor cast from XG-150 high carbon alloyed iron and treated with Thermal Stability Profiling. Its Kangaroo Paw ventilation uses 144 diamond and teardrop pillars to expand surface area and improve cooling—offering up to a 30% surface area gain and approximately 20% better cooling—while the HD option preserves a smooth OE-style finish.
DBA 96-99 BMW 328i E36 Front 4000 Series Plain Rotor
