Top 12 Best Exhaust GT350 That Sounds Absolutely Insane

The stock exhaust starts to feel restrictive the moment you wind the 5.2 flat-plane V8 toward its 8,250 rpm redline, and plenty of people bolt on the first axle-back they find online only to end up with a droning cabin at 70 mph. Picking the best exhaust gt350 setup is mostly about avoiding that mistake.

A good system comes down to three things: material, drone control, and fitment. 304 stainless or titanium holds up to heat cycles, while cheaper aluminized steel starts rusting through hangers and flanges within a couple of winters.

Resonated mid-pipes or chambered mufflers keep the cabin civil under 3,000 rpm but let the sound open up past 6,000. Factory-style hangers matter too, since a system that needs shimming every few months gets tiring fast.

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Image	Product	Price
Our Top Picks 1	Corsa GT350 X-Pipe	Check Price
Our Top Picks 2	Corsa 14337BLK Cat-Back	Check Price
Our Top Picks 3	MBRP S7205BLK Cat-Back	Check Price

Our Selected Top 12 Exhaust Gt350 Worth Your Money

This list covers twelve aftermarket exhaust systems picked for sound, fit, and build quality. Each entry explains how it performs on the road, which drivers it suits best, and its main strengths and drawbacks. Expect notes on installation, tone, and long-term wear.

1. Corsa 14347 X-Pipe for 2016-2017 Ford Mustang GT350

The Corsa 14347 is a cat back exhaust for the 2016-2017 Ford Mustang GT350, a single side exit setup with polished twin Pro Series tips. It suits a GT350 driver who wants the factory hardware replaced properly, not hacked together.

Its biggest strength is the full 304 stainless steel build backed by a limited lifetime warranty.

Setup is a straight swap behind the catalytic converter, since Corsa ships the exhaust pipe, muffler, tips, hardware kit and instructions in one box. The whole package weighs 35 pounds, so each piece is easy to maneuver under the car without a second set of hands.

Day to day, the polished twin tips need a quick wipe after rain and washes to stay bright, though the single side exit means only one corner to maintain.

Flow is the point here, and the increased horsepower and torque promised in the listing come from piping that breathes better than stock. The 304 stainless steel construction handles heat cycling and winter salt, and the system is made in the U.S.A. with a limited lifetime warranty behind it. The product averages 4.7 out of 5 across 20 ratings, and the polished tips and welds draw the strongest praise.

The usual complaint is symmetry: the single side exit leaves the opposite rear corner empty.

The rating sits at 4.7 stars across 20 reviews, and the strongest praise lands on sound. Swapping the stock x-pipe for this piece sharpens the Voodoo’s flat-plane rasp and credits freer flow with a modest pull up top. The common complaint is price for a single pipe section, with a few calling the added volume tiring on long highway runs.

Anyone with a GT350 who wants the 5.2 louder without a full exhaust swap will be happy. It pairs with the stock cat-back, keeps installation simple, and carries a limited lifetime warranty on 304 stainless. Choose another option if you commute quietly, lease the car, or want real track gains from headers and a tune instead of sound alone.

Daily use is simple once it’s on. The pipe bolts to factory flanges with the included hardware and instructions, and a home garage with jack stands can handle the swap in an afternoon. The full kit adds a muffler and polished twin Pro Series tips. Re-torque the clamps after the first few heat cycles and again each season.

Pros

• 304 stainless steel resists rust and road salt
• Ships complete with hardware kit and instructions
• Increases horsepower and torque through better exhaust flow
• Limited lifetime warranty from a U.S. manufacturer

Cons

• Single side exit leaves one rear corner visually empty
• Polished tips demand frequent wiping to stay bright

2. Corsa 14337BLK Cat-Back Exhaust

The Corsa 14337BLK Cat-Back Exhaust is a bolt-on system for the 2015-2016 Ford Mustang GT 5.0L. It suits drivers who want their 5.0L loud and unapologetic.

Its biggest strength is sound with manners: an aggressive, custom tuned note under throttle that settles into a calm, drone-free hum at steady cruise.

Installation comes first and demands planning. This system fits Premium Package cars only, and the rear valance must be converted to the Roush Quad Tip style before the tips bolt up. That change happens to the car itself, so add extra work before the wrenching begins.

Once sorted, daily driving stays pleasant: cold starts give the 5.0L a loud wake-up, spirited driving gets properly rowdy, and steady highway running stays calm enough for conversation.

Corsa tunes the note for this specific application, and the result is aggressive without filling the cabin with noise at speed. The lack of drone on the highway is the strongest praise this system earns.

The most common complaint is the fitment fine print, since it only fits Premium Package cars and the 30 day warranty is unusually short. The 304 stainless steel construction handles rust and winter road salt well.

Daily use starts with prep work: the kit fits 2015-2016 Mustang GT 5.0L Premium cars and needs a Roush quad tip rear valance before the black tips line up. Bolting it in is straightforward. Around town the note is loud and crackly, then settles on the highway with no drone. The 304 stainless shrugs off winter salt.

Drivers chasing the GT350-style quad tip look will call this the best exhaust for their 2015-2016 GT, especially those who commute daily and hate drone. Skip it if your Mustang lacks the Premium Package, if cutting a Roush valance sounds like a chore, or if you want a quiet sleeper. EcoBoost shoppers need a different part entirely.

Fitment quirks deserve a mention. The system hangs on factory locations and connects to stock pipes, so an afternoon with a socket set covers the install. Budget extra for the Roush valance and body shop work, since that trim piece is not included. The manufacturer warranty runs just 30 days, which feels short for a part like this.

Pros

• No drone at highway cruise speeds
• Aggressive, custom tuned exhaust note
• Rust-resistant 304 stainless steel build

Cons

• Requires Roush Quad Tip rear valance modification first
• Fits Premium Package Mustangs only, not base models

3. MBRP S7205BLK Cat Back Exhaust System

The MBRP S7205BLK is a cat back exhaust for the 2018 and newer Ford Mustang GT, made from 3 inch mandrel-bent tubing with a full black coating. It suits GT drivers who want a street version setup, and its biggest strength is the quad 4 inch dual wall tips that fill the rear diffuser.

Installation is a behind-the-converter job: everything after the cats comes off and this bolts in at the factory hanger locations. You line up the four tips with the diffuser openings before final tightening, which takes patience on a jack.

No tune is needed because it is a straight cat back. Day to day, the non-active design means the sound never changes on its own, one volume from cold start to highway cruise. Soap and water keeps the black coating fresh, and the tips polish up when grime builds.

Mandrel bending keeps the tubing diameter consistent through every bend, so flow stays smooth where cheaper pipe would neck down. The black coating slows corrosion on the tubing while the four tips are stainless. The street version tune stays in daily territory rather than race volume.

The two reviews on record both score it 5.0 out of 5, though only two ratings back that up. The fixed sound level is the real trade-off, since no valves means no quieter mode late at night.

Daily driving starts with a bolt-on install on a 2018 or newer Mustang GT. The 3-inch mandrel-bent tubing follows factory routing, and the quad 4-inch dual-wall stainless tips fill the valance. Because the system is non-active, the sound stays the same in every drive mode. The black coating hides grime, though brake dust builds on the tips in a week.

Anyone hunting the best exhaust GT350-style quad-tip look will appreciate the black finish. The mandrel bends keep exhaust flow consistent for modified engines. Drivers wanting quiet cruising, active valves, or polished chrome tips should choose something else. It weighs 55 pounds, so a helper speeds installation. Buy through an authorized dealer, because the MBRP warranty applies only there.

The listing shows a 5.0 rating from two reviews, a small sample that still ranks it number 1,364 among cat-back systems. The part number is S7205BLK, and the street version skips valves entirely. Wipe the quad tips with metal-safe cleaner after washes to keep the coating even, and keep the stock exhaust for resale.

Pros

• Mandrel-bent 3 inch tubing keeps flow unrestricted end to end
• Quad 4 inch dual wall stainless tips fill the diffuser fully
• Black coating adds corrosion protection over bare tubing
• Steady one-volume sound fits daily driving and weekend use

Cons

• Warranty valid only when purchased through an authorized dealer
• Non-active design offers no quiet mode for early mornings

4. BORLA 60662 SwitchFire X-Pipe Exhaust

The Borla 60662 SwitchFire X-Pipe replaces the mid-section of a Shelby GT350 exhaust with a merged X design that changes the tone. It fits drivers who want a raspier, more aggressive note without new mufflers or a tune.

Its biggest strength is the bolt-on install, which leaves the factory flanges to do their job.

Setup means ramps or jack stands and a socket set. The unit drops into the stock path between the cats and mufflers, and creeping oil on the stubborn factory hardware saves time. Light enough to hold with one hand while you start the bolts.

On the road, the SwitchFire merge blends both banks into a single stream, so the V8 note comes through more open and harder-edged than the stock mid-pipe. Cold starts carry a louder bark, then the tone settles at steady cruise.

Build quality is where this piece earns its keep. Borla forms the pipe from T-304 stainless with all welded construction, so there are fewer seams to work loose under heat, and the material shrugs off winter road salt. The assembly weighs 18.1 pounds.

Feedback averages 4.5 out of 5 stars across 23 ratings, and the note plus the straightforward fit draw the strongest praise. The common complaint concerns coverage: the box contains nothing beyond the X-pipe itself.

The Borla 60662 SwitchFire X-Pipe turns the GT350’s quiet mid-pipe into a sharper snarl. Everyday use starts on jack stands: bolt it into the factory flange locations, no cutting, and be driving the same afternoon. The all-welded T-304 stainless build weighs 18.1 pounds, shrugs off road salt, and the 4.5-star average across 23 reviews backs up the sound.

The happiest drivers are GT350 people who want the 5.2’s flat-plane wail without paying for a full cat-back. Anyone comparing the best exhaust gt350 options on a budget lands here, since one part rewrites the tone. Pick a resonated mid-pipe instead if you do lots of highway commuting, and skip it if interstate drone drives you nuts.

Installation goes smoother with fresh flange gaskets and new hardware, since the originals often seize from heat cycles. Torque in stages and recheck after a few drives. Borla backs the pipe with its manufacturer warranty, and the welded X survives rust better than pieced-together alternatives. Storage is simple: it sits on a shelf at just over 18 pounds.

Pros

• Bolts in with hand tools, no cutting or welding
• T-304 stainless with fully welded joints
• SwitchFire merge sharpens the GT350 exhaust note
• Made in USA at 18.1 pounds

Cons

• Mid-section only, mufflers and tips stay stock
• Only 23 ratings, so the long-term record is thin

5. Corsa 14335 Cat-Back Exhaust for Ford Mustang GT

The Corsa 14335 is a cat-back exhaust built for the 2015-2016 Mustang GT 5.0L, and it suits drivers who want an aftermarket exhaust note without the highway drone that usually comes with one. Its biggest strength is the patented Reflective Sound Cancellation technology, which knocks out the resonant hum during steady cruising.

Fitment is the first hurdle. The system fits Premium Package cars only, and the rear valance needs the Roush quad tip modification before anything lines up. Budget extra time and parts for that step.

Installation is manageable after that, since the whole exhaust weighs 45 pounds and the sections are light enough to handle under the car. Day to day, the RSC technology does its job.

Highway cruising stays free of drone, so you can hold a conversation or hear the radio without cranking the volume.

Build quality centers on 304 stainless steel, which shrugs off rust and road salt, so the system holds up through wet winters without flaking. The Reflective Sound Cancellation design is the real story here. Drone stays out of the cabin at steady speed, which is the main reason to choose this over a cheaper setup.

The sticking point is fitment. It works on Premium Package cars only, and the required Roush quad tip valance modification adds cost and bumper work before the first start-up.

Steady cruising stays calm because the reflective sound cancellation kills the drone most systems throw at part throttle. Stand on it and the 5.0 turns loud and raspy, which is the point. The 304 stainless tubing shrugs off road salt. The catch: the quad tips need a Roush rear valance modification, and the kit fits Premium Package cars only.

This suits anyone who drives the GT daily but wants a real bark on throttle, someone who hates drone more than noise. Skip it if you own a base package car, want a quiet commuter, or refuse to cut the rear valance for a Roush quad tip setup. Straight pipe fans chasing maximum volume should look elsewhere.

Anyone chasing the best exhaust gt350-style rasp on a standard GT lands on this Corsa, since the reflective baffles lift the tone above a normal muffler swap. Bolts and clamps line up underneath, though the valance step adds a shop visit or a patient weekend. The whole kit weighs 45 pounds, easy to wrangle solo in a home garage.

Pros

• Reflective Sound Cancellation eliminates drone at highway cruise
• 304 stainless steel resists rust and road salt
• Light 45-pound system is easy to handle
• Purpose-built fit for the 2015-2016 Mustang GT 5.0L

Cons

• Fits Premium Package cars only
• Requires the Roush quad tip rear valance modification first

6. MBRP S7275BLK Cat Back Exhaust System

The MBRP S7275BLK is a cat-back exhaust aimed at Shelby GT350 drivers who want their car to sound the part. Its biggest strength is the classic MBRP tone, backed by a black powder coated finish and a useful lift in power. The system suits anyone building a louder, more assertive street car.

Installation is a driveway job rather than a shop visit. A cat-back means you unbolt everything behind the catalytic converters, so the stock pipes come off with basic hand tools and the new sections hang in place. Each section is light enough to haul around a garage, though the muffler turns awkward the moment you are flat on your back.

Once running, the car announces itself at startup and the note stays present at highway speed. Cleaning is ordinary, soap and water once everything cools.

Sound is the headline, and the classic MBRP note is what earns the praise, deep at idle and sharp on throttle. The system backs it up by boosting both horsepower and torque over the stock setup.

The tubing weighs 55 pounds all in, which feels solid rather than fragile. The most common complaint lands on the finish, since the black coating carries only a one-year warranty while the pipes face heat every time you drive.

Living with the S7275BLK is a weekend install: hang the sections behind the factory cats, torque the clamps, and the tone deepens at idle and sharpens under throttle, where MBRP’s horsepower and torque claims live. The black powder coat wipes down with soap and water after salty winters. The tradeoff is a finish warranty that lasts one year.

Shoppers running best exhaust gt350 searches on a budget will like what coated steel does for the price and the deep note the moment the engine fires. Anyone keeping a car for a decade, or parking outside through snowy winters, should step up to MBRP’s T304 stainless line, because a one-year coating warranty will not stretch that far.

One more practical note: the kit weighs 55 pounds, so two people make lining it up under the car easier. Chips from jacks and gravel can be touched up with high-heat black paint to slow rust. The coated line makes sense for a second car or something you will trade within a few years, not a keeper.

Pros

• Classic MBRP sound with presence at idle and full throttle
• Boosts horsepower and torque over the stock setup
• High heat black powder coat finish
• Straight swap behind the factory catalytic converters

Cons

• Finish warranty covers only one year
• 55 pounds makes the muffler section awkward to align alone

7. MBRP S5256AL Cat-Back Exhaust

The MBRP S5256AL is a cat-back exhaust for the GT350 with a single side exit and welded-on hangers. It suits anyone who wrenches on their own car and wants to keep install costs low.

Its biggest strength is fitment, because the welded hangers settle onto factory mounting points without the usual clamping and adjusting.

Installation is a garage-afternoon job rather than a shop emergency. At 52 pounds, the kit is heavy enough that a second pair of hands helps. MBRP designs the system for DIY fitting with minimal professional assistance, so a weekend wrench with a jack and basic hand tools can manage it.

Around town, the free-flowing path lets exhaust gas exit faster, and the milled finish only needs an occasional wipe-down.

The main job is moving exhaust gas out with less restriction, which MBRP links to gains in horsepower, torque, and throttle response, plus potential fuel savings from an engine that works more efficiently. Construction supports the claim: every hanger is welded on, the exterior carries a milled finish, and the complete kit weighs 52 pounds.

The strongest point in its favor is the straightforward, DIY-oriented fitment. The clearest limitation is the absence of published power figures, so actual results stay unverified.

Out of the box, the kit weighs 52 pounds, with hangers welded onto the pipes so it hangs off stock mounts. Installation is jack-stands-and-gaskets work in a driveway, torque everything, then check tip clearance before the final clamp. Daily use means a deeper idle note, a busier exhaust at speed, and a milled finish that needs wipe-downs after salted roads.

GT350 drivers chasing a bigger exhaust note and the single side exit, plus weekend wrenches saving on shop labor, will get the most out of it. Daily-driven cars that hum through suburbs might prefer something tamer. Anyone wanting the quietest ride, quad tips, or a polished show-piece setup should pick a different system instead.

Value-wise, the 52-pound kit avoids the drag of heavier systems, and the milled finish hides fingerprints and water spots better than polished chrome. Expect one realignment after the first heat cycles as gaskets settle, and keep the supplied clamps handy. Line up the hangers before tightening, work front to back, and an afternoon finishes the job.

Pros

• Welded-on hangers simplify alignment and speed up installation
• DIY install doable with minimal professional help
• Freer exhaust flow brings sharper throttle response
• Milled exterior finish with single side exit styling

Cons

• 52 pounds is heavy to maneuver under the car alone
• Some cars still call for professional help during install

8. Roush Mustang Axle-Back Exhaust Kit

The Roush Mustang Axle-Back Exhaust Kit is a muffler-and-tip swap for 2018-2019 Mustang GT 5.0L cars. It suits anyone who wants the Roush sound without touching the mid-pipe or paying for a full system. Its biggest strength is tone, a deep, aggressive note that stands out right away.

Setting it up means unbolting the factory rear mufflers and bolting this assembly in their place. It hangs from the stock hangers, and at 31 pounds you can maneuver it under the car on jack stands without help.

Nothing gets cut or welded, and the brackets accept it without fuss. Day to day, the note stays tame at a steady cruise and wakes up in the upper rev range. A quick soap-and-water rinse after winter road salt keeps the metal looking right.

The main job here is sound, and the Roush mufflers change the 5.0L’s voice. The idle rumbles instead of burbling, and volume climbs as the revs rise.

Build matches the brand, with the kit shipping in a 26 x 23.5 x 12.5 inch box that includes the hardware for the bolt-in swap. Feedback is strongest on that sound and how cleanly everything lines up. The common complaint is drone that builds during steady highway cruising.

No customer reviews accompany this listing, so daily use comes down to the product type. An axle-back replaces the muffler section behind the rear axle and leaves the rest of the stock exhaust untouched. The 31-pound box measures 26 by 23.5 by 12.5 inches, small enough for one person to carry into the garage.

Drivers with a 2018 or 2019 Mustang GT 5.0L who want a louder Roush tone without touching mid-pipes will be happy. Anyone shopping for the best exhaust on a GT350 should pick different hardware, because the 5.2L flat-plane engine needs its own fitment. Cat-back systems cost more and replace more pipe.

Roush Performance builds this kit under part number 422097, which also appears as the OEM part number in the listing details. A 31-pound shipping weight and a 26 by 23.5 by 12.5 inch box keep handling easy. The price runs above generic axle-backs, so the premium buys the Roush name and Mustang-specific fitment.

Pros

• Bolt-in install using the factory hangers
• Distinctive Roush V8 note under throttle
• Light 31 pound kit, easy one-person handling
• Direct fitment for 2018-2019 GT 5.0L

Cons

• Drone can wear on you during long highway runs
• Covers the rear axle only, mid-pipe stays stock

9. Roush Performance 421985 Cat-Back Exhaust Kit

The Roush Performance 421985 is a cat-back exhaust kit built for the 2015-2019 F-150, covering the 5.0L, the 3.5L Ti-VCT, and the 2.7L and 3.5L EcoBoost in non-Raptor trim. It suits truck drivers chasing bolt-on power with a factory-clean look, and its biggest strength is fitment flexibility across every cab and bed configuration.

A garage and good jack stands make the setup far simpler. The boxed kit measures 67 by 13 by 67 inches and weighs 55 pounds, so a second pair of hands helps with positioning the pipes under the truck.

A cat-back bolts in behind the catalytic converters, and after that the only upkeep is wiping the chrome tips. The dual tips exit the side instead of the rear, keeping the bumper area clear, and the ROUSH logo faces outward where you can actually see it.

Flow is the main job, and this design cuts back pressure behind the catalytic converters so the 5.0L or either EcoBoost can pull closer to its rated horsepower and torque. Tip construction is the clear strong point, since 304 stainless resists corrosion through salted winters far better than plated steel. The piping material beyond the tips goes unlisted, which matters if you plan to keep the truck long term.

Raptor trucks with the 3.5L EcoBoost sit outside the fitment list entirely.

Daily use is simple: the kit bolts behind factory cats on a 2015-2019 F150 with the 5.0L, 3.5L, or 2.7L EcoBoost, and it weighs 55 pounds, so two people make the install easier. Dual side-exit tips stamped with the Roush logo exit below the rocker panel. Chrome 304 stainless looks great but shows water spots, so wipe them after rain.

Drivers chasing a deeper V8 rumble, something close to a GT350 in character, will be happy with the sound on cold starts and hills. The 304 stainless tips resist rust for years. Anyone towing heavy loads daily, or wanting a stock-quiet cabin on long highway runs, should choose a milder or rear-exit system instead.

One kit covers every cab and bed combination of that generation, from a regular cab long bed to a crew cab short bed, which simplifies shopping. The stated goal is more airflow with less back pressure for horsepower and torque. Keep the part number 421985 handy when ordering or checking fitment listings.

Pros

• One kit fits four engines and every cab and bed layout
• Dual 304 stainless tips resist rust and carry the ROUSH logo
• Lower back pressure helps the engine reach its rated output
• Side exit placement keeps the rear bumper area clear

Cons

• Excludes the Raptor version of the 3.5L EcoBoost
• Piping material beyond the tips is not specified

10. Roush 421145 Exhaust System

The Roush 421145 is a cat-back exhaust system and a common first upgrade for GT350 drivers. It suits you if you want a deeper, meaner V8 note without going full race mode. Its biggest strength is balance, loud where it counts and calm enough for a weekday commute.

Installation is a garage afternoon with jack stands and hand tools, and the 27-pound assembly is light enough to hang solo while you line up the bolts. Cold starts announce themselves, so early departures will wake the street. At a steady cruise the note drops to a low hum you can talk over.

Keep a rag in the trunk, because the tips collect grime and water spots after every wet drive.

Sound is the main job, and a 4.3 out of 5 rating across 55 reviews shows the tone lands well. It rumbles deep at idle, sharpens under throttle, and snaps quiet the second you back off.

The system arrives as a single matched kit, so the sections and hardware are designed to run together. Drone at low rpm draws the most criticism, and it gets tiring on long highway runs.

There is no written feedback to quote, just a 4.3-star average from 55 ratings, which points toward more happy installs than returns. Everyday use is simple: the cat-back hangs on the stock rubber hangers, connects to factory piping behind the cats, and needs only basic wrenches. The 27-pound kit is light enough to maneuver under the car alone.

Anyone searching for the best exhaust for a GT350 runs into the Roush name early, and the reputation rests on a deep idle note and bolt-on fitment that skips cutting. Choose something else for a near-stock highway voice, or for a first-time wrench job without jack stands, patience, and an hour set aside for lining up the tips.

Budget one or two hours for the swap, plus a re-torque of the clamps after a hundred miles while the gaskets settle. Store the stock mufflers in the shipping box, since factory parts add resale value. Keep expectations modest: this is a straight bolt-on, not a tune, and not a warranty argument either.

Pros

• Deep, aggressive Roush tone at idle and under throttle
• One matched kit keeps installation tidy
• Light 27-pound assembly easier to handle solo
• Solid 4.3 out of 5 rating across 55 reviews

Cons

• Drone at low rpm can get tiring on long trips
• Loud cold starts may not suit apartment parking

11. Roush 2015-2017 Mustang GT 5.0 Axle Back Exhaust

The Roush 2015-2017 Mustang GT 5.0 Axle Back Exhaust swaps the factory mufflers for Roush-designed high-flow units with 4-inch flash-chromed dual wall tips. It suits 5.0L V8 drivers who want a deeper exhaust note without committing to a full cat-back system. The standout strength is the T304 stainless construction, which resists corrosion season after season.

Installation stays behind the rear axle, so the job comes down to unbolting the stock mufflers and seating these in their place. The mufflers are built as direct replacements, and the corrosion-resistant 304 stainless means wet weather and road salt are less of a worry.

Day to day you notice the deeper tone on start-up and under throttle, and it settles back down at steady cruising. The chunky 4-inch tips are the flashiest part, so a quick wipe after washing keeps them looking clean.

Roush designed the high-flow mufflers to open up the 5.0L V8 note, and T304 stainless holds its finish against heat, moisture, and winter grime. The dual wall tips addgv the kind of rear-end detail most stock parts lack. Feedback lands on a 5.0 out of 5 star average across 12 ratings, with the Roush character of the sound earning the strongest praise.

The main gripe is coverage, since Roush backs the kit with a 30-day warranty, short compared to most exhaust brands.

Twelve reviews give this axle-back a perfect 5.0 average, and the praise points to the deeper note the single high-flow mufflers pull out of the 5.0 Coyote plus the finish on the 4-inch flash-chromed dual wall tips. Nothing negative repeats in the available feedback, so the 30-day warranty is the biggest stated limitation on paper.

Someone with a 2015 to 2017 Mustang GT who wants a louder exhaust without touching the mid-pipe will be happy here, since installation stays at the rear axle and the 304 stainless resists winter salt. People hunting the best exhaust for a GT350 should choose something else, because the 5.2 needs a different fitment.

In the garage, expect a straightforward bolt-on job at the stock flange with basic hand tools, then a final fit check so both tips sit even. Clean the tips with metal polish every few washes to keep the chrome bright. The single tip per side keeps the rear fascia looking close to stock.

Pros

• T304 stainless shrugs off rust and winter road salt
• 4-inch flash-chromed tips dress up the rear end
• Roush high-flow mufflers deepen the 5.0L tone
• 5.0 star average across 12 ratings

Cons

• Manufacturer warranty covers just 30 days
• Axle-back only, so stock mid-pipe limits total volume

12. Mishimoto Race Axle-Back Exhaust, Ford Mustang GT, Black

The Mishimoto Race Axle-Back Exhaust replaces the stock rear section on a 2015-2017 Ford Mustang GT. It suits drivers who want an aggressive race-style sound in place of the quiet factory mufflers.

The biggest strength is the cut and clamp design, which holds the system in place with a clean, model-specific fit.

Installation happens underneath the car: the stock sections get cut behind the rear axle, then the clamps pull the new pipes tight onto the factory tubing. No welding is involved, so a garage setup with jack stands and a saw is enough.

Day to day there is nothing to adjust; the bolted clamps keep the tailpipes lined up and the black finish wipes clean after rain or road grime. At 7.26 kg, the whole kit is light enough for one person to position under the car.

As a race axle-back, the main job is sound, and this setup leans loud and raspy rather than refined, which is exactly what the race name promises. Build confidence comes from Mishimoto’s lifetime manufacturer warranty, which covers the system for the life of the car.

This axle-back shows 5.0 out of 5 stars across its two reviews, and the rating data lists no complaints. The honest trade-off is the install itself, which cuts the factory pipe, so returning to stock is not plug-and-play.

Only two ratings exist, both at 5.0, with no written feedback, so everyday use tells the story. The cut and clamp design reuses factory piping, and the black mufflers bolt up behind the rear axle. Installation on a 2015-2017 GT needs basic hand tools and a free afternoon. Expect a loud cabin at steady highway speed.

Drivers hunting the best exhaust GT350-style note from their Coyote V8 will be happy here. These race-spec straight-through mufflers trade comfort for volume: a raw cold start, pops on deceleration, and drone during long highway pulls. Anyone wanting a quiet commuter car, or a subtle daily setup, should choose Mishimoto’s street version of the same axle-back instead.

Fitment covers the 2015 through 2017 GT only, so confirm your model year before ordering. The full kit weighs about 7.3 kg and carries Mishimoto’s lifetime warranty, and the black finish hides heat discoloration and road grime. Clamps for the cut points come in the box, though a second pair of hands makes squaring the tips far easier.

Pros

• Bolts together with clamps, no welding required
• Direct fitment for 2015-2017 Mustang GT
• Race design produces a loud, aggressive sound
• Backed by a lifetime manufacturer warranty

Cons

• Fits 2015-2017 Mustang GT only, other years are out
• Loud race tone too much for a quiet daily driver

Best GT350 Exhausts Compared Side by Side

How to Choose the Right GT350 Exhaust

Sound level matters most, because a setup that drones at highway speed gets old fast, and fixing it means a return trip to the shop. Check material and fit next; stainless steel resists rust, and a system that lines up with factory mounting points bolts on in an afternoon.

Gt350specific Fitment

The rear valance on this car spaces its four cutouts for quad rear tips, and a standard GT exhaust misses them all. Hanger locations differ between the two, so a GT-listed system can flange up fine and still hang tips crooked or off to one side. Match the listing to the 5.2L flatplane V8 before comparing sound clips.

Midpipe diameter is next. Factory connection points run 3 inches, so a matching 3-inch midpipe bolts up with the supplied clamps in an afternoon.

A smaller section forces spacer rings or adapter pipes, and every added joint is a fresh spot for an exhaust leak or a rattle against the tunnel.

Ground clearance shows up most in daily use. Muffler bodies sit low on some systems, and a one-inch drop from lowering springs is enough to scrape a case that fit fine at stock height.

Check the stated clearance figure, then favor mufflers tucked between the frame rails over cases hung below the floorpan, especially with shaved underbody panels.

Sound Character and Drone

The flatplane crank pushes its note into higher frequencies, so even a small muffler change is obvious on this car. It also means the band from 2,000 to 3,000 rpm, where the tach sits in sixth at 70 mph, is exactly where drone lives.

An axleback swaps only the rear mufflers and keeps the stock midpipe with its resonators, so the note gets rowdier but the soundtrack underneath stays factory. A catback replaces the run behind the converters, often 3-inch stainless, and deleting the mid resonator is the step that turns tolerable into miserable. Valved systems split the difference: closed for the commute, open on a back road.

Living with a good one means hearing the wail on demand and still holding a conversation at 70. Read the specs for resonators or Helmholtz chambers tuned to that cruise band, and give more weight to a decibel figure at a stated rpm than to any word like aggressive.

Stainless Grade and Welds

The first thing that gives away a cheap system is the surface rust that appears around winter two, creeping over the muffler shells and along every weld bead. That is what 409 stainless does.

It resists rust-through, so the pipes will not fall apart, but the surface pits and discolors wherever road salt sits. 304 stainless tubing and shells stay dark and clean instead, which matters if your state lays salt down every December.

Bends matter as much as the metal. Crush-bent tube shows visible flat spots along the outside of a curve, and those flat spots choke flow exactly where the gas is trying to turn hardest. Mandrel-formed bends keep the inside diameter constant, so a 2.75-inch tube still measures 2.75 inches through the corner.

Check the product photos before you commit. Fully welded seams and thick mounting flanges survive years of heat cycles. Spot welds and thin stamped flanges are where hangers crack and leaks start first, usually right after the warranty ends.

Realistic Power Gains

The stock 5.2L Voodoo already makes 526 horsepower, so a bolt-on catback on its own rarely adds more than a handful of ponies, and some cars show nothing until an intake and a tune join the party. Marketing claims that promise 20 wheel horsepower from a muffler swap deserve a hard look.

The midpipe choice matters more for paperwork than for speed. A catless setup adds flow, but it fails emissions inspections in many states and provinces, which leaves you with a rejected inspection and a registration you cannot renew. A high-flow catted pipe keeps the car road legal, still sharpens the sound, and passes the sniffer.

Pay attention to published dyno data. A trustworthy maker shows before-and-after pulls on a stock GT350, run the same day and SAE corrected, so the gain actually means something for your car.

Charts measured on modified cars with headers and tunes hide the baseline you are starting from, which is exactly the number you care about.

Installation and Support

A real bolt-on kit hangs off the factory rubber hangers and ships with band clamps, new gaskets, and all the bolts, which turns this into a 2 to 4 hour job on jack stands. Kits that skip the hanger-side hardware send you hunting for a welder, so read the parts list before checkout.

Read the instructions before the car goes in the air. Certain systems recommend exhaust wrap where the piping runs close to the differential, or extended hangers to clear a lowered stance, and both are easier to order ahead of install day than to discover flat on your back.

Warranty terms separate the serious brands from the rest. A limited lifetime policy on piping and mufflers is standard among the established names, while budget systems often carry a 3-year plan that excludes gaskets and clamps. Confirm tip hardware and replacement gaskets are sold separately, because gaskets compress every time the system comes off and clamps are the first thing to corrode.

Axle-Back vs Cat-Back Exhausts for a GT350: What Actually Changes

Axle-Back vs Cat-Back Exhausts for a GT350: What Actually Changes

An axle-back on a GT350 swaps only the mufflers and tips behind the rear axle, so the stock mid-pipe and its resonator stay put. A cat-back replaces everything from the catalytic converters back, typically with larger diameter tubing and a new mid-pipe.

What that actually changes:

• Sound: both open up the flat-plane snarl, but a cat-back lets you change or delete the resonator, which is where drone gets tamed on these cars.
• Power: gains from either are small, often inside a dyno’s margin of error on a naturally aspirated 5.2.
• Weight: a cat-back in thinner-walled or titanium tubing can drop noticeably more mass than a muffler swap.
• Install: an axle-back bolts up after the axle with clamps and basic hand tools; a cat-back takes more time under the car.

Neither option touches emissions equipment, so no check-engine light and no inspection drama in most states. Pick based on sound and budget, because the performance gap between the two is marginal.

Common Installation Mistakes That Cause Drone and Exhaust Leaks

Common Installation Mistakes That Cause Drone and Exhaust Leaks

Most drone complaints after a cat-back swap on the GT350 trace back to a loose connection, not the muffler design. An exhaust leak upstream of the mufflers lets raw pulses reach your ears and mimics drone at cruising rpm.

Avoid these mistakes during install:

• Reusing old flange gaskets. Stock gaskets crush on the first install and rarely seal twice. New ones cost about $10 and save a trip back under the car.
• Skipping the retorque. Band clamps and flange bolts loosen after a few heat cycles, so recheck everything between 50 and 100 miles.
• Hanging the pipe with half-seated isolators. The system sits off-center, and joints open up as the engine rocks under load.
• Skipping high-temp silicone at slip joints. A thin bead fills gaps that leak low-frequency noise.

Tips resting against the rear valance also buzz against the body and sound like drone from inside the cabin. Check tip-to-body clearance before you drive off.

Cleaning and Maintenance Tips to Keep Your GT350 Exhaust Tips Looking New

Cleaning and Maintenance Tips to Keep Your GT350 Exhaust Tips Looking New

Exhaust tips take the worst abuse on the car, since hot gases push soot and carbon onto the rear and inner edges every time you drive. Let the metal cool completely, then rinse with plain soap and water before applying anything stronger.

A few habits that protect the finish:

• Keep a separate microfiber towel for the tips. A rag used on wheels will drag brake dust across the metal and leave scratches.
• Polished stainless tips tolerate a mild metal polish worked in small circles with a foam applicator.
• Black or ceramic-coated tips need a non-abrasive cleaner only. Polish strips the coating and grabs gray streaks.
• Attack the soot ring on the inside lip with a degreaser-soaked paper towel. Polish alone rarely cuts through it.

A thin layer of wheel wax after each cleaning makes future washes easier, because soot rinses away instead of baking on. The whole job takes about fifteen minutes.

People Also Asked

Will an Aftermarket Exhaust Fit My GT350 Without a Tune?

An aftermarket cat-back or axle-back exhaust bolts onto a GT350 with no tune, since it sits past the catalytic converters and never changes fueling. Budget a couple of hours on jack stands; the kits reuse the factory hangers and clamps. Watch the options box, because some GT350s got the active Track exhaust from Ford and others the standard system, and you need the matching kit.

Does a Louder Exhaust Cause Cabin Drone on Long Highway Drives?

It can, and drone usually shows up around 2,000 to 3,000 rpm at steady cruise. Straight-through mufflers with long-tube headers are the usual offenders. A system with a resonator or a chambered muffler keeps it tolerable. One tip: hold your normal highway speed with any candidate exhaust for at least an hour before buying, because a tiring drone only appears on long pulls.

Can I Install the Exhaust Myself with Basic Garage Tools?

You can install a GT350 cat-back exhaust with basic garage tools: a socket set, jack stands, and penetrating oil. The factory bolts usually need soaking overnight, since the stock hardware corrodes badly. A second person helps lower the stock muffler without scratching the rear bumper. Expect the job to take most of an afternoon, and spray soapy water on the rubber hangers before sliding the new pipes in.

How Long Does an Exhaust System Last Before Rust or Leaks Start?

A quality stainless steel system usually lasts 8 to 10 years, or 60,000 to 100,000 miles, before rust or leaks appear. Mild steel versions can start corroding in 3 to 5 years if you drive on salted roads. Spray the clamp bolts with penetrating oil a day before you remove anything, and listen for a ticking sound at cold start, since that often means a cracked weld or leaking gasket.

How Do I Clean Exhaust Tips so They Keep Their Finish?

Wash tips with the same car shampoo and water you use on the paint, then dry them with a microfiber towel. For baked-on soot, a metal polish like Flitz or Mothers on a foam applicator lifts it in a few passes. Skip scouring pads and acidic wheel cleaners, since both scratch or dull the stainless. Wiping them down after a damp drive prevents water spotting.

Conclusion

Three things decide the right GT350 exhaust: sound, material, and legality. Drone at highway speed gets old fast, so judge clips at cruising rpm rather than idle. Material matters too, since 304 stainless outlasts mild steel through years of heat cycles.

Confirm the setup stays street legal where you live.

Match the choice to your budget and how often you drive. A daily car justifies a quieter system with easy bolt-on fitment, while a weekend track toy can go louder for less. Check the comparison table and the picks above to weigh the tradeoffs before you buy.