The DBA 4000 Series plain front rotor for 1998–2002 Subaru Impreza RS is a direct-replacement rotor cast from XG-150 high-carbon alloyed iron and heat-treated with Thermal Stability Profiling to resist stress and heat during repeated hard braking. Kangaroo Paw ventilation with 144 diamond and teardrop pillars increases surface area and cooling efficiency about 20% over traditional straight-vane designs, and the HD plain finish provides a smooth OE-style look.
DBA 98-02 Subaru Impreza RS Front 4000 Series Plain Rotor