The DBA 4000 Series drilled-and-slotted rotor specified for the 1999 Porsche 911 Carrera 4 (Turbo Look) front application uses the XS Gold treatment. That 4000 Series XS Gold rotor combines non-directional cross drilling and slots to allow brake dust and gases to escape while offering a gold-finished hub, bringing the 4000 Series' enhanced thermal and visual features to this specific front brake fitment.
DBA 1999 Porsche 911 Carrera 4 (Turbo Look) Front 4000 Series Drilled & Slotted Rotor