In our endless pursuit of perfection, we are happy to introduce to you our NEW equal length exhaust manifold for the Subaru WRX/STI. Crafted from 14 GaugeSUS-304 Stainless Steel, GTSPEC’s headers are tigwelded inside and out to ensure a perfect flow and perfect fit. Compared to the factory exhaust manifold, GTSPEC’s manifold extracts the most power from your EJ20/EJ25 by incorporating a long-tube, equal length design that truly provides improved heat dissipation and noticeable 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. GTSPEC products are an upgrade exclusively for those seeking the ultimate in engine performance.