Bolt on an American tradition with Flowmaster Cat-Back Exhaust Systems. The throaty roar and performance gains of these performance exhaust systems are unmistakably Flowmaster. Built from aluminized or stainless steel. 3-year & limited Lifetime Warranties.
Unleash the horsepower demons lurking under your hood with a power-packed Magnaflow Cat-Back Exhaust System. Engineered for unrestricted flow and a throaty growl, Magnaflow Cat-Back Exhaust Systems are all wrought from prime 409 stainless steel for lasting durability. Lifetime Warranty for Magnaflow Cat-Back Exhaust Systems.
Fire-breathing performance. Head-turning tone. Long-lasting materials. Borla Cat-Back Exhaust Systems deliver the power and style to win pink slips and earn street cred. Borla Cat-Back Exhaust Systems are crafted from pure T-304 stainless steel that’s mandrel bent and backed by a 1,000,000-mile warranty.
The affordable cat-back exhaust that doesn’t compromise on horsepower muscle or tough torque is none other than Gibson Cat-Back Exhaust Systems. Mandrel-bent piping cuts the backpressure out of your cat-back exhaust system, and the SuperFlow mufflers keep the rumble tasteful. Built from aluminized steel or 409 stainless. Lifetime Warranty.
For trick sound and tire-chirping power, equip your speed fiend with JBA Performance Cat-Back Exhaust Systems. JBA honed their engineering skills building legendary Mustang exhausts, and they pour their decades of experience into every system. Mandrel bent from T-304 stainless or aluminized steel. 1-year warranty.
Prime your powerplant with free-flowing firepower—Stainless Works Exhaust Systems. Built from pure T304 stainless or aluminized steel and designed for maximum horsepower & torque, this performance exhaust system is your one-way ticket to the winner’s circle. Limited Lifetime Warranty.
Double the tailpipe of a traditional Heartthrob Cat-Back Exhaust by equipping your street machine with the Heartthrob Dual Cat-Back Exhaust. These dual cat-back exhaust systems have 3 muffler choices for a meaner or mellower tone. Mandrel-bent aluminized steel construction. 1-year warranty.
Let the other drivers know that you mean business by bolting on Bassani Aft-Cat Cat-Back Exhaust Systems. Engineered for tone options, Bassani cat-back exhaust systems have 3 muffler options ranging from wicked loud to mellow. Mandrel bent from either stainless (Lifetime Warranty) or composite steel (18-month warranty).
Not sure which 2004 Ford Mustang Performance Exhaust Systems are right for you? We have over 7601 customer reviews, with an average rating of 4.5, to help you find exactly what you're looking for. Here's what some of our customers have said:
"Sounds sweet! loud, throaty, deep tone. Took only a few hours to install and the 4in tips look great. Recommend borla stingers to anyone who wants an awesome sounding exhaust." —Nicholas D from Pembroke, MA bought a Borla Exhaust Systems for a 2004 Ford Mustang, Mach 1, 4.6L V8.
"Great exhaust note. I've had several people say it sounds perfect. Not to loud unless you really get on the gas. Easy installation, my only advice. Use a reciprocating saw to remove your old exhaust. Be prepared to jack your car up enough to install the pipes over your rear axel. Fast shipping. My only complaint, did not receive the free Borla hat or a cool Borla sticker. Well, can't have everything." —Kenneth S from Arlington, VA bought a Borla Exhaust Systems for a 2004 Ford Mustang.
"I really like my new flowmaster set up. Although it sounds a bit different I had originally thought it still sounds great and I can't complain. Arrived next day very fast shipping" —Alex M from Trabuco Canyon, CA bought a Flowmaster Exhaust Systems for a 2004 Ford Mustang.
"I really like the Borla ATAK Exhaust for my 03-04 Cobra. It is a very deep sounding exhaust note. It has some rumble and poping as well in certain RPM. It exceeds all my expectations and makes the car come alive with just a cat-back system. I made an excellent choice with this exhaust. It looks great also." —Jim S from San Antonio, TX bought a Borla Exhaust Systems for a 2004 Ford Mustang, Cobra, 4.6L V8.
"I was looking for a catback exhaust for my Mach 1 for awhile. I stumbled across Auto Anything on ebay & searched their site. They have the best prices for Borla exhaust by far & service was great! I love my Borla exhaust! The performance & sound is awesome! I would definitely recommend the exhaust to anyone looking & would recommend Auto Anything for buying. . . You won't find a better price! Period!" —The T from Hudson Oaks, TX bought a Borla Exhaust Systems for a 2004 Ford Mustang.
"Iam very pleased with the purchase of my Borla exhaust the Quality and sound is great went in with no problems,price and customer service was out-standing." —Jim A from Rochester, MI bought a Borla Exhaust Systems for a 2004 Ford Mustang, Mach 1, 4.6L V8.
"Tried installing using Rhino Ramps to lift the car. This worked well for removing the old exhaust, but it was impossible to put the new tail pipes in. Wound up driving off the ramps, jacking the car up, and removing the tires to complete the install. Other than that, it sounds great and it is a lot more responsive. Gas mileage appears to be a little better as well..." —Albert C from Elgin, IL bought a Magnaflow Exhaust Systems for a 2004 Ford Mustang, 3.8L V6.
"The Flowmaster American Thunder catback exhaust system is well known for its amazing sound and high quality. Among the loudest of all catback systems, the American Thunder system has a loyal fanbase of diehard gearheads who wouldn't settle for anything less than the "Flowmaster rumble" for their car. Neither should you." —Paul S from Jensen Beach, FL bought a Flowmaster Exhaust Systems for a 2004 Ford Mustang.
"The sound is incredible, an obvious increase in power. The pipes did need some tweaking to align but doable. Well worth the price. Fast delivery as always...Ron" —Ronald S from Phoenix, AZ bought a Heartthrob Dual Cat-Back Exhaust System for a 2004 Ford Mustang.
"Awesome exhaust system with a loud deep sound upon acceleration and starting. Some sound at idle, but not too much, but once you accelerate it really rocks that sound. Excellent product and you truly can hear the sound difference not to mention it gives your back end an awesome look. I got it professionally installed and within the first 10 minutes driving it afterwards, I loved it and the sound it produced too. Awesome product and it fit my 2004 Mustang perfectly." —Michael T from Hamilton, OH bought a Magnaflow Exhaust Systems for a 2004 Ford Mustang.
"This will be the second Bassani exhaust system that I have had installed on my car. The car is currently at a local performance shop having a custom turbo system installed and during the project we decided to swap out the stock independent rear suspension (IRS) for a solid axle setup (SRA). This means that my IRS exhaust system would not work so I had to purchase a new one for the SRA.
The fit and finish of the system is top notch to say the least. I have installed many different systems over the years and always ran into fitment issues that if not addressed caused noise while driving from the exhaust systems hitting the underside of the car. That is not the case with the Bassani system because of the time they took to get the fitment right. The quality of the construction is well above what is normally found and is the other reason I keep going back. I have never had a weld fail or even look bad for that matter. The sound of the exhaust is also among the top in its class. I am very picky about my car and have spent a great deal of time listening to different systems but there is just something about the Bassani that keeps me coming back. I have no complaints at all and I know if I have any issues in the future I will have a company that stands behind their product." —Ryan M from Butler, PA bought a Bassani Aft-Cat Exhaust System for a 2004 Ford Mustang, GT, 4.6L V8.