Skunk2’s Racing Test Pipe for the '00-'09 S2000 is designed to dramatically improve engine performance and increase horsepower by significantly reducing exhaust flow restriction.Designed for Off-Raod Use ONLY, Skunk2 Racing Test Pipes are manufactured from mandrel-bent, aircraft-quality, T-304 stainless steel and are precision TIG welded for precise fitment. Each Skunk2 Racing Test Pipe features the appropriate sensor bungs, heavy-duty flanges, and its own stainless steel, acid-etched Skunk2 badge.