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.
Release the factory stranglehold and set your ride free with the MBRP Performance Exhaust System. Packed with the free-flowing power and sound that MBRP is famous for, this high-performance exhaust system is designed for one thing—taking the win!
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.
Hate in-cab drone from old-school cat back exhaust systems? Corsa Performance Cat-Back Exhaust Systems use high-tech resonance cancelling technology to pump up your power without the obnoxious cockpit hum. Plus, Corsa Cat-Back Exhaust Systems are built from mandrel-bent stainless steel and carry a Lifetime Warranty.
Got the guts to handle the power that comes with Banks Monster Cat-Back Exhaust Systems? Your beastly Banks Monster Cat-Back Exhaust is wrought from 100% stainless steel and mandrel bent for ferocious power gains and an imposing growl. Lifetime Warranty on these cat-back exhaust systems.
Give your car or truck an infusion of power and sound with an aFe Exhaust System. Your ride’s stock pipes put the squeeze on performance but you can unlock it simply by bolting on one of these kits. Unlike your factory system, aFe kits feature mandrel-bent tube and low-restriction mufflers to boost horsepower and add a mean, performance tone. 2-year warranty.
For an immediate boost in performance with your choice of mild or wild exhaust tones, turn to Heartthrob Cat-Back Exhaust Systems. These single-exit cat-back exhaust systems come in your choice of Turbo (aggressive) or Welded (mellow) mufflers. Mandrel-bent aluminized steel. 1-year 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.
Bolt on the legendary Corsa sound and power without exhausting your budget! dB Performance Exhaust by Corsa is built specifically for trucks to deliver ultimate performance and an aggressive growl—with no cab drone or wallet drain. 10-year 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.
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.
Don’t stop with a cat back exhaust system. For a full-throttle performance upgrade, pick up the Dynatech SuperMAXX Complete Header Exhaust System. This kit includes headers, cats and head pipes—all built from T-304 stainless. Warranty against defects.
Heartthrob Deep Tone Dual Cat-Back Exhaust Systems dish up the loudest exhaust belch available. Equipped with dual glasspack mufflers, this cat-back exhaust system spits hot fire every time you hit the gas. Mandrel-bent aluminized steel piping. 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).
Give your diesel rig a sound that hums authority with the ANSA Silverline Exhaust System. Prime exhaust flow is improved by mandrel bent tubing. Select from a direct-fit single or dual exhaust. This exhaust is available in 3 performance levels. Warranty depends on selection.
Not sure which 2004 GMC Sierra 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:
"This exaust is really nice. The deep throaty noise is awsome, and it looks good too." —Kevin N from Madison, IN bought a Magnaflow Exhaust Systems for a 2004 GMC Sierra, 1500, crew cab, 5' 6" short bed, 5.3L V8.
"Installation was a breeze,with the help of MR.SAWSALL. Just over an hour for complete install. And on to great performance and sound. Also great looks with the free TIP! Thanks Autoanything Rick" —Rick O from Henderson, NV bought a MBRP Exhaust Systems for a 2004 GMC Sierra, 6.6L Duramax.
"Everything was great with one exception, the muffler came pre-dented. It wasn't due to shipping. Install was quick and simple, did it without any help on the garage floor. The tips are longer than what is shown in the photo and actually look better. They might consider an additional model or a tighter final bend to put the tips just behind the rear wheels. That would allow the mud flaps to catch most of the splash back. They sound pretty good all around. I chose the side exits because it seems whenever you see a truck with rear exits they are bent or crushed or missing a hanger. A truck is a truck and susceptible rear end damage so something to consider if you undecided about rear or side exits." —Larry L from Greenwood Village, CO bought a Borla Exhaust Systems for a 2004 GMC Sierra, 1500, extended cab, 6' 6" short bed, 4.8L V8.
"Easier install than I thought it would be, took about an hour. Sounds good, looks good." —David S from Velva, ND bought a Magnaflow Exhaust Systems for a 2004 GMC Sierra, 2500HD, crew cab, 6' 6" short bed, 6.0L V8.
"Easy installation, great quality fit. Sounds great without an excessive amount of interior noise." —David V from Indianapolis, IN bought a Magnaflow Exhaust Systems for a 2004 GMC Sierra, 5.3L V8.
"Great addition and easy application. Sounds aggressive like a truck should. No problems with fitting, but would purchase heavy duty 3" clamps from auto store since they seem to seal system better." —Mike M from Greenwood, IN bought a Flowmaster Exhaust Systems for a 2004 GMC Sierra.
"I put the 4" turbo back MBRP exhaust system on my 2004 duramax. It sounds great. Gives it a more "throaty" sound. I didn't notice any horsepower, but my main purpose was to get ready for a tuner, get some of that exhaust heat out faster. I love it. I am not the most mechanically savvy person, I was able to install by myself fairly easy." —Jason L from Filer, ID bought a MBRP Exhaust Systems for a 2004 GMC Sierra, Crew cab, 6.6L Duramax.
"I had an exhaust shop install my my magnaflow system along with banks torque tube headers. The four inch tip has a tuff look. The sound is deep and makes my truck sound strong. I have not pulled a trailer yet. But on the hi-way I gained 1.5 MPH." —Jody T from Montgomery, TX bought a Magnaflow Exhaust Systems for a 2004 GMC Sierra.
"Other than the directions leaving a little to be desired, this exhaust is great. It really added power and a fantastic sound to my truck. I would recommend it." —Dave E from Brighton, IL bought a MBRP Exhaust Systems for a 2004 GMC Sierra.
" Excellent product, excellent price, deep exhaust sound and you can feel the power in the upper RPM range!!! I am very pleased with their product, it exceeded my expectations!!!" —William S from Humble, TX bought a MBRP Exhaust Systems for a 2004 GMC Sierra.
"The flowmaster Muscle Truck exhaust is the best sounding ehxaust ever. I love the sound. But if you have nagging neighbors, this may not be what you want. lol" —Tammy B from Upper Marlboro, MD bought a Flowmaster Exhaust Systems for a 2004 GMC Sierra.