1999-04 Mustang GT, Mach1 Cat-backs

FREE Shipping! The Bassani BX Cat-back for the 1999-04 Mustang GT and Mach1 will definitely give your Mustang more bite! It produces an aggressive, deep, throaty rumble that has the unique and exotic Bassani sound. This cat-back is noticeably louder than the factory exhaust system but still adequate for everyday driving.

FREE Shipping! The Bassani Cat-back for the Mustang GT and Mach1 will definitely give your Mustang more bite! It produces an aggressive, deep, throaty rumble that has the unique and exotic Bassani sound. This cat-back is noticeably louder than the factory exhaust system but still adequate for everyday driving.

FREE Shipping! The Borla "Stinger" Cat-back for the 1999-04 Mustang GT and Mach1 will make everyone around you take notice! It produces an extremely aggressive, deep rumble that will be the envy of all your car buddies. This cat-back is much louder than the factory exhaust system so it is not for the weak of heart!

FREE Shipping! The Flowmaster American Thunder Cat-back for the 1999-04 Mustang GT and Mach1 will make give your Mustang the classic muscle car sound that everyone wants! It produces an aggressive, deep rumble that will take you to 60's muscle car heaven. This cat-back is louder than the factory exhaust system but still adequate for everyday driving. The Flowmaster Cat-back has the sound you want at a great price!

FREE Shipping! The Flowmaster Force II Cat-back for the 1999-04 Mustang GT and Mach1 will make give your Mustang the classic muscle car sound that everyone wants with a quieter sound than the American Thunder cat-back. It produces a deep rumble that will take you to 60's muscle car heaven. This cat-back is louder than the factory exhaust system but still adequate for everyday driving. The Flowmaster Cat-back has the sound you want at a great price!

FREE Shipping! The Magnaflow Cat-back gives your 1999-04 Mustang GT a great tone without attracting the wrong kind of attention! It produces an smooth, mellow rumble that speaks of performance. This cat-back is slightly louder than the factory exhaust system and produces very little interior resonance. The Magnaflow Cat-back is a fantastic exhaust upgrade that can be enjoyed everyday!

FREE Shipping! The MagnaPack Cat-back gives your 1999-04 Mustang GT & Mach1 a very aggressive tone that speaks of performance. This cat-back is much louder than the factory exhaust system and may be objectionable to some users. The MagnaPack Cat-back is a fantastic exhaust upgrade that will get your noticed!

FREE Shipping! SLP's Mustang Loud Mouth 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 SLP's Mustang X-pipes, SLP 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, retighten, and you're done. No other system offers this level of performance and adaptability!