The DBA 4000 Series standard rotor is a direct-fit replacement cast from XG-150 high-carbon alloyed iron and processed with Thermal Stability Profiling. It features DBA's Kangaroo Paw ventilation pattern to increase surface area and cooling efficiency, delivering up to a 30% gain in surface area and about 20% better cooling versus straight vane designs. The 4000 Series HD variant offers an OE-style smooth finish.
DBA Subaru WRX STi Brembo 6 Pot Spec R Yellow Calipers 19in Rim 4000 Series Stand Rear Brake Rotor