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The DBA 4000 Series plain rotor for 2004–2009 Audi S4 rear is a direct-fit replacement focused on managing braking heat and maintaining OE appearance. Cast from XG-150 high-carbon alloyed iron and Thermally Stability Profiled, it uses DBA's Kangaroo Paw ventilation with 144 diamond and teardrop pillars to increase surface area and cooling—producing measurable thermal gains over straight-vane rotors—while the HD finish preserves a smooth stock look.
DBA 04-09 Audi S4 Rear 4000 Series Plain Rotor
