CORKSPORT 2010-2013 Mazdaspeed 3 - Cat-Back Exhaust - Stainless Steel T304 (Axl-6-100-10) Stainless Steel T304 construction with 100mm stainless tips for corrosion resistance and clean stylish look. Mandrel bent, true 80mm piping for increased flow and more power from your engine Stainless steel muffler packing for a deep tone and long life. 2 year warranty and full color installation instructions. All of the needed installation hardware included.