The DBA 4000 Series plain rotor for 1989–2001 Nissan Skyline rear applications is a direct-replacement rotor cast from XG-150 high carbon alloyed iron and Thermally Stability Profiled. Its Kangaroo Paw ventilation incorporates 144 diamond and teardrop pillars to increase surface area and cooling efficiency—delivering up to a 30% surface area boost and about 20% improved cooling—while the HD option preserves a smooth OE-style finish suitable for street and controlled use.
DBA 89-01 Nissan Skyline Rear 4000 Series Plain Rotor