We have teamed up with PPE to make the highest quality and best fit available on the market. Test Pipes replace the stock catalytic converters for unrestricted maximum exhaust flow. 3" Piping for the ultimate HP output 304 Stainless Steel Flanges, 3/8" Thick Waterjet Cut 304 Stainless Steel, 16 gauge wall thickness Optional Hardware and Gaskets Available Removes AIV Bungs 100% TIG Welded Made in the USA Allow 4-6 weeks for Production, or 5-8 weeks for those with Ceramic coating. 25% Restocking fee for any cancellations Looking for a different test pipe? Click any link in the table below to jump to another style! Twin Turbo 2.5" Non-Resonated Resonated High-Flow Cat 3.0" > 2.5" Non-Resonated Resonated High-Flow Cat 3" Non-Resonated Resonated High-Flow Cat Non-Turbo & JDM TT 2.25" All 2.5" All