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DBA 4000 Series plain front rotor for 1997–2004 Porsche Boxster Roadster S is a direct-replacement rotor cast from XG-150 high-carbon alloyed iron and Thermal Stability Profiled to resist heat under repeated heavy braking. It features DBA's Kangaroo Paw ventilation with 144 diamond and teardrop pillars to increase surface area up to 30% and improve cooling roughly 20% compared with straight vane designs. The HD variant preserves a smooth OE-style finish when needed.
DBA 97-04 Porsche Boxster Roadster S Front 4000 Series Plain Rotor
