M31007 SLP Loudmouth Exhaust System 99-04 Mustang GT/Mach1

The Mustang LoudMouth® has always been the best performing cat-back exhaust in the business. Now it's the most versatile, too! Using groundbreaking modular technology first seen on our Mustang X-pipes, we've developed a system that can be quickly reconfigured to fit changing performance, noise level, and sound quality requirements. Simply loosen a few band clamps, swap muffler types, re-tighten, and you're done. No other system offers this level of performance and adaptability!

• Includes our SLP resonators for virtually zero flow restriction and the meanest sound around
• Employs LoudMouth's exclusive modular technology, making it possible to switch between muffler and resonator types in a matter of minutes
• Dyno-proven to out-perform competitive resonator-type exhausts
• Engineered and built to OEM standards to ensure proper fit
• Constructed entirely from mandrel-bent stainless steel
• Features show quality polished resonators and 3.5" double-wall tips with elektromarked SLP logo
• For 1999-2004 GT and Mach I models