The DBA 4000 Series plain rotor for 2016–2018 Ford Focus RS front applications is a direct-replacement rotor cast from XG-150 high-carbon alloyed iron and treated with Thermal Stability Profiling. DBA's Kangaroo Paw ventilation employs 144 diamond and teardrop pillars to boost surface area and cooling efficiency, resulting in up to a 30% increase in surface area and about 20% better cooling compared to straight vane designs. The HD option keeps an OE-style smooth finish.
DBA 16-18 Ford Focus RS Front 4000 Series Plain Rotor