A perfect match to your GReddy cat-back exhaust systems and/or GReddy Supercharger Kits, the Scion xB SUS Header. All GReddy headers are made from stainless steel mandrel bent pipes. Great care was taken during the design to enhance the performance of your normally-aspirated or Supercharged vehicle, by fine-tuning the placement, size and angle of each collector to even out the exhaust pulses. Combined with large primary runners make GReddy Headers a solid choice for your vehicle.