Bassani SS Off Road Mid Pipes 2003 Mustang Cobra/Mach 1 – Stainless has been designed to maximize flow and increase the results.Bassani Power X Crossover Pipe for Mustang 2003 Cobra/Mach 1 4.6L/Manual – Stainless * 2 1/2 diameter tube * 5 pc. modular Power X * Does not include catalytic converters – Off-Road use only. * Bassani Xhaust Crossover Pipes are designed as a unique X shaped chamber made out of two stamped sections * Precision design means huge gains in power, sound and appearance * Bassani X and Y Pipes are custom-made for your specific make, model, and year * Features mandrel-bent tubing for healthy exhaust scavenging * Maintains your factory emissions * Crafted in the USA Description If you are upgrading the exhaust system on your vehicle, we recommend using Bassani¿s Power X Crossover Pipes with catalytic Converters & Premium “High Flow” cats are used and all factory connections are retained. Compared to an off-road crossover pipe without cats, there is virtually no difference in power output. So for street use, cats are definitely the way to go. BASSANI Xhaust is recognized for unsurpassed quality and fit; starting with superior stainless steel materials for durability, mandrel-bent and welded by experienced craftsmen. Quality stainless steel products by BASSANI Xhaust are backed by a LIFETIME WARRANTY. Bassani Stainless Steel: Designed to maximize performance, improve style and enhance sound characteristics. Precision-engineered Stainless Steel for durability and backed by a LIFETIME WARRANTY. Complete with superior quality mounting hardware and detailed instructions.