GTSPEC's Turbo Outlet will free up the exhaust flow in your EVO 8/9 resulting in more potential for power. Crafted from 14 GaugeSUS-304 Stainless Steel, GTSPEC’s exhaust components are tig-welded inside and out to ensure a perfect flow and perfect fit. Compared to the factory 02 housing, GTSPEC’s turbo outlet pipe extracts the mostpower from your 4G63 by increasing the usable amount of volume exhaust gases can occupy. This allows for a design that provides for more exhaust flow leading to a noticeable increase in horsepower. Combining an industry leading mandrel-bent 45mm stainless steel piping, .5-inch thick CNC machined SUS304 wax-cut flanges and SUS304 02 bungs means a performance part with the quality and craftsmanship you deserve. This bolt on component will work with the factory exhaust or any system that keeps the factory style donut gasket.