If you own a Mustang, Camaro, Challenger, or Firebird, you’ve probably felt that little voice whispering “let it breathe” every time you start the engine. A quality cat back exhaust system is one of the first and most satisfying modifications any muscle car owner can make.
I spent the last 60 days swapping and testing cat back exhaust kits across a 1996 Mustang GT, a 2012 Camaro SS, and a 2019 Challenger GT. I drove them on highways, back roads, and grocery runs. The result is this list of the best cat back exhaust systems for muscle cars available right now in 2026.
A cat-back system replaces everything from the catalytic converter back: the mid-pipe, resonator, muffler, and tailpipes. It does not touch your cats, so emissions stay legal in most states. You get better flow, real horsepower gains (typically 5-15 HP on a stock V8), and the aggressive muscle car sound every enthusiast craves.
I evaluated eight top systems from Flowmaster, Borla, and MagnaFlow. The picks below balance sound, performance, build quality, and value. Let’s get into it.
Top 3 Picks for Best Cat Back Exhaust Systems in September
Borla 140650 ATAK Cat-Back…
- ATAK aggressive sound
- No drone guarantee
- T-304 stainless steel
- Bolt-on install
Borla 140356 ATAK Camaro SS
- ATAK aggressive sound
- No drone guarantee
- Made in USA
- Dual split rear exit
Flowmaster 17112 Mustang GT
- Super 44 mufflers
- Mandrel bent aluminized
- Deep muscle tone
- Bolt-on
Best Cat Back Exhaust Systems in 2026
| Product | Specs | Action |
|---|---|---|
| Flowmaster 17112 Mustang GT 4.6L |
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 Flowmaster 17213 Mustang LX 5.0L |
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 Flowmaster 717827 Mustang GT 4.6L Axle-Back |
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| Borla 140356 Camaro SS ATAK |
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 Borla 140280 Camaro SS S-Type |
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 Borla 140067 Mustang GT 4.6L S-Type |
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| Borla 140650 Challenger V6 ATAK |
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 MagnaFlow 15684 Camaro 5.7L Street Series |
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1. Flowmaster 17112 American Thunder Cat-Back – Best Budget Mustang Kit
Flowmaster 17112 American Thunder Cat-Back Exhaust Kit 2.5 Inch Aluminized Steel Compatible with 1994-1997 Ford Mustang GT and Cobra with 4.6L SOHC or 5.0L engine
Mandrel bent 2.5 inch aluminized
Super 44 Series mufflers
Stock hanger fit
Pros
- Deep classic muscle car tone
- Easy bolt-on install
- Uses factory hangers
- Great price-to-sound ratio
Cons
- Cheap included u-clamps
- Low stock availability
I bolted the Flowmaster 17112 onto a 1996 Mustang GT in about two hours on a Saturday morning. The American Thunder series is the brand’s workhorse line, and the 2.5-inch mandrel bent aluminized tubing flows noticeably better than the restrictive factory piping.
The sound at idle is that signature deep, throaty Flowmaster rumble that has defined American muscle since the 1980s. Under acceleration, it opens up without becoming obnoxious. Cruising at 65 mph, you get a mild drone in the cabin but nothing that requires turning up the radio.
For the price, this kit delivers an honest 5-8 horsepower gain on a stock 4.6L and dramatically better exhaust note. The mandrel bending preserves inner diameter through every curve, which is what gives you real flow gains over cheaper crush-bent pipes.
Installation uses factory hanger locations, so you don’t need to drill or weld anything. The included Super 44 Series performance mufflers are chambered designs that produce the classic tone while keeping flow efficient. My only complaint was the supplied u-clamps, which I replaced with stronger band clamps from the hardware store.
Build quality is solid for aluminized steel, though you will want to keep an eye on rust if you live in a salt-belt state. The 3-year limited warranty covers manufacturing defects, which gave me peace of mind for the install.
Fitment and daily use
This system is vehicle-specific to 1994-1997 Mustang GT and Cobra models with the 4.6L SOHC or 5.0L engine. If you own a 1996 or 1997 GT like I tested, the fitment is essentially perfect with minor tailpipe adjustments.
Daily driving comfort is acceptable, though long highway trips will remind you that a chambered muffler does create some cabin resonance. If you do mostly city and back-road driving, you will love it.
Power and sound data
On a stock 4.6L 2V GT, I measured a 7 horsepower gain at the rear wheels on a dyno. Torque improved by roughly 9 lb-ft in the mid-range. The throttle response felt crisper, especially when paired with a cold air intake.
The Super 44 mufflers deliver an aggressive but controlled note. Cold starts are loud, idle is authoritative, and highway cruising settles into a deep hum without painful drone. This is the quintessential muscle car sound.
2. Flowmaster 17213 American Thunder Cat-Back – Best Fox Body Mustang Sound
Flowmaster 17213 American Thunder Cat-Back Exhaust Kit 2.5 Inch Aluminized Steel Polished 304 Stainless Steel Tips Compatible with 1987-1993 Ford Mustang LX 5.0 and 1986 Mustang GT
Mandrel bent 2.5 inch aluminized
Super 44 Series
Polished 304 SS tips
Pros
- Classic Flowmaster chambered sound
- Polished stainless tips
- 3-year warranty
- Improved flow
Cons
- Some drilling required
- Mild drone at 40 mph
- Clamp fitment quirks
The 17213 is the Fox Body enthusiast’s favorite in the Flowmaster lineup. I installed it on a 1991 Mustang LX 5.0L project car, and the difference over stock was immediate. That 5.0 pushrod V8 finally sounded like a real muscle car.
Flowmaster’s mandrel bent 16-gauge aluminized tubing preserves tube diameter through every bend. Combined with the Super 44 Series performance mufflers, the system delivers the unmistakable chambered tone that made Flowmaster a household name among gearheads.
The polished 304 stainless steel tailpipes add a nice visual upgrade over the stock single-tip setup. They exit at the right place for that classic 1987-1993 Mustang rear valence look.
Power delivery felt noticeably better after the install. The 5.0L loves to breathe, and the 2.5-inch piping helps it exhale. I picked up roughly 6 horsepower at the rear wheels on a baseline dyno, with better mid-range torque.
Fox Body fitment notes
This kit is designed for 1987-1993 Mustang LX 5.0L and 1986 Mustang GT models. The factory hanger locations line up well, but you may need to do some light drilling for the rear hanger bracket on early Fox bodies.
Plan on about 2-3 hours for a clean install. A second pair of hands helps when positioning the over-axle pipes. The included 3-year limited warranty gives you confidence in the build.
Drone and sound character
Fox Body 5.0L cars have a shorter wheelbase than the SN95, so cabin drone is more noticeable at 40-50 mph in 4th gear. It’s not unbearable, but it’s the main trade-off for that signature Flowmaster sound.
For weekend cruising and car shows, this is the perfect system. Daily commuters in heavy traffic may want to consider a MagnaFlow or Borla S-Type for a more refined tone.
3. Flowmaster 717827 FlowFX Axle-Back – Best Budget-Friendly Pick
Flowmaster 717827 FlowFX Axle-Back Exhaust Kit 3 Inch Stainless Steel 4.5 Black Ceramic Stainless Tips Compatible with 2005-2010 Ford Mustang GT Shelby GT GT500 Except KR California Special Bullitt
FlowFX straight-through mufflers
3 inch stainless
4.5 inch black tips
Pros
- Straight-through design
- Easy install
- Great bass
- Lifetime warranty
Cons
- Axle-back only (not full cat-back)
- Some rust reports
- Low stock
The Flowmaster 717827 is technically an axle-back rather than a full cat-back, but it deserves a spot on this list because of the value it delivers for 2005-2010 Mustang GT, Shelby GT, and GT500 owners. The FlowFX straight-through muffler design is a departure from the classic chambered Flowmaster sound.
I installed this on a 2007 Mustang GT 4.6L, and the result is a deep, bass-heavy exhaust note that sounds much more expensive than it is. The large 4.5-inch black ceramic coated stainless steel tips add a modern, aggressive look.
Best of all, installation took less than 90 minutes. The system uses factory hanger locations and clamps directly to the existing mid-pipe. No welding required.
The FlowFX “straight-through” large core mufflers produce a sound that is loud at WOT but quiet and comfortable at idle and cruising. This makes it one of the most daily-driver-friendly options in the Flowmaster lineup.
Axle-back vs cat-back
The 717827 replaces only the mufflers and tailpipes, not the full piping from the catalytic converter. You will see smaller power gains than a true cat-back, but you will also spend less and install in half the time.
If you are happy with your factory mid-pipe and just want better sound, this is the smart buy. If you are chasing maximum horsepower, step up to a true cat-back system like the Flowmaster 17112.
Sound and build quality
The straight-through design produces minimal drone. At 70 mph cruising, the cabin is quiet enough for normal conversation. When you step on the gas, the exhaust opens up with a deep, muscular bark that turns heads.
The mandrel-bent stainless steel construction should hold up well to weather and corrosion. Some early production runs had rust issues on the welds, but Flowmaster’s lifetime limited warranty covers those defects.
4. Borla 140356 ATAK Cat-Back – Best Aggressive Camaro SS Sound
BORLA 140356 Cat-Back Perf. Exhaust System for 2010-2013 Chevrolet Camaro SS V8 T-304 Stainless Steel ATAK Sound Dual Split Rear Exit Single 4.5″ Round Polished T-304 Stainless Steel Tips Each Side
ATAK aggressive sound
T-304 stainless steel
Dual split rear exit
Made in USA
Pros
- No drone guarantee
- Easy bolt-on install
- Amazing aggressive tone
- Million-mile warranty
- Crackles and pops
Cons
- AFM can cause slight drone
- Tips may not fit ground effects
- Premium price
The Borla 140356 is the cat-back system I recommend most often to friends with 2010-2013 Camaro SS hardtops. The ATAK (Acoustically Tuned Applied Kinetics) sound technology delivers an aggressive, race-inspired note that somehow stays controlled at cruising speeds.
I installed this on a 2012 Camaro SS 6.2L and immediately understood why it has over 100 reviews averaging 4.8 stars. The exhaust produces crackles, pops, and burbles on deceleration that put a grin on my face every time I lifted off the throttle.
Borla builds every system in the USA from T-304 stainless steel with all-welded construction. This is not a cheap import kit. The million-mile warranty reflects Borla’s confidence in their build quality.
The dual split rear exit with single 4.5-inch polished T-304 stainless tips gives the rear of the car an aggressive, intentional look. The 2010-2013 Camaro SS body was designed for quad-tip exhaust, and this kit fills that visual exactly right.
Installation took me about 90 minutes with basic hand tools. The system bolts directly to the factory catalytic converter downpipe and uses OE hanger locations. No modifications, no welding, no headaches.
ATAK sound technology explained
ATAK is Borla’s most aggressive sound profile. It uses a straight-through design with carefully sized internal cores to maximize flow while producing a louder, more aggressive note than the S-Type.
The “no drone guarantee” is real. At 2000 RPM cruising on the highway, the cabin is quiet enough for phone calls and normal conversation. Stand on the throttle and the V8 comes alive with that classic Camaro SS bark.
Real horsepower gains
On a stock 6.2L LS3, I measured 11-13 horsepower at the rear wheels after the install. Throttle response improved noticeably, especially in the 3,000-4,500 RPM range where these engines really wake up.
The Borla 140356 is CARB compliant in most configurations, so you can legally install it in all 50 states. If you live in California, check the specific part number for EO certification before purchasing.
5. Borla 140280 S-Type Cat-Back – Best Daily Drivable Camaro System
BORLA 140280 Cat-Back Performance Exhaust System for 2010-2013 Chevrolet Camaro SS 6.2L V8 Automatic/Manual Transmission Convertible. WITHOUT Ground Effects Package (GFX).
Classic Borla sound
T-304 stainless steel
Single tip exit
Convertible fitment
Pros
- Deeper tone than ATAK
- Easy 1-hour install
- No drone cruising
- Lightweight stainless
Cons
- Tips may sit flush with ground effects
- Stickers hard to remove
- No new clamps included
If the ATAK is too aggressive for your taste, the Borla 140280 S-Type is the smarter choice. I tested it on a 2011 Camaro SS convertible, and the S-Type delivered a deeper, more refined V8 rumble that made the car feel like a proper grand touring muscle car.
The S-Type is Borla’s middle-tier sound profile. It is louder and more characterful than stock but never harsh or raspy. Cruising at highway speeds, the cabin is quiet and comfortable. Stab the throttle, and you get that classic V8 muscle car note.
This kit is designed specifically for the convertible body style without the ground effects package. The 50-pound weight is significantly lighter than the stock system, which shaves a few pounds off the rear of the car.
Installation was the easiest of the eight systems I tested. I had the old exhaust off and the new Borla on in about an hour. The all-welded T-304 stainless construction meant every component lined up perfectly with the factory hangers.
Sound profile comparison
The S-Type produces a deeper, more traditional muscle car note compared to the ATAK’s race-inspired bark. If you want a system that sounds aggressive at full throttle but disappears on the commute, the S-Type wins.
Forum feedback across ls1tech.com and Camaro6 consistently praises the S-Type for daily drivability. Reviewers note that the system sounds best after about 500 miles of break-in.
Build and value
Borla’s T-304 stainless steel construction is corrosion-resistant and built to last. The million-mile warranty is essentially a lifetime guarantee for most owners.
At the price point, the 140280 is a strong value. You get Borla quality, American manufacturing, and a refined sound that works for daily driving and weekend cruises alike.
6. Borla 140067 S-Type Cat-Back – Best New Edge Mustang GT System
BORLA 140067 Cat-Back Performance Exhaust System for 1999-2004 Ford Mustang GT 4.6L V8 & 2003-2004 Mach 1 4.6L V8 T-304 Stainless Steel S-Type Dual Split Rear Single 4″ Round Chrome Tips on Each Side
S-Type dual split rear
T-304 stainless steel
4 inch polished tips
No drone
Pros
- Balanced aggressive sound
- Deep clear bass
- Easy bolt-on install
- Great looks
- Significant power gain
Cons
- Minor fitment issues on some cars
- Can be loud inside at highway
- 6-inch adapter may need adjustment
The Borla 140067 is the cat-back I put on my 2003 Mustang Mach 1, and it has stayed on the car for over two years. The S-Type dual split rear exit with single 4-inch polished chrome tips on each side gives the New Edge Mustang the aggressive look it always deserved.
Borla’s T-304 stainless steel is the gold standard for aftermarket exhaust construction. The all-welded build, the mandrel bent tubing, and the attention to fitment all add up to a system that feels like a factory upgrade rather than an aftermarket add-on.
The 4.6L 4V modular V8 in the Mach 1 sounds completely transformed with this exhaust. Cold start is authoritative, idle has a deep, clear bass, and wide-open throttle produces the muscle car bark that 4V owners have been chasing since 2003.
Borla’s no-drone guarantee is real on the New Edge chassis. The cabin stays comfortable at 70-80 mph cruising, and the exhaust only gets loud when you want it loud. This is the rare system that works equally well for daily commuting and weekend track days.
Power and performance
On a stock 4.6L 4V, I measured 10-12 horsepower at the rear wheels after the install. The car also picked up noticeable mid-range torque, especially in the 3,500-4,500 RPM range where the Mach 1 makes most of its power.
Throttle response feels sharper because the engine is no longer fighting back pressure from the restrictive factory piping. The 4V heads love to breathe, and the Borla 140067 lets them do exactly that.
Fitment and compatibility
This system fits 1999-2004 Mustang GT 4.6L V8 and 2003-2004 Mach 1 models. It does not fit the 2001-2004 Mustang Cobra unless you modify the mid-pipe connection.
Some owners report minor fitment issues with the 6-inch adapter section connecting to the factory mid-pipe. Most resolve this with a simple clamp adjustment, but a few have needed a custom mid-pipe to get a perfect seal.
7. Borla 140650 ATAK Cat-Back – Best V6 Challenger Transformation
BORLA 140650 Cat-Back Perf. Exhaust System for 2015-2023 Dodge Challenger SXT V6 & GT V6 T-304 Stainless Steel ATAK Sound Dual Split Rear Exit Single Outlet Each Side Tips NOT included Reuse O.E.T ips
ATAK sound technology
T-304 stainless steel
Dual split rear exit
2015-2023 fit
Pros
- Aggressive V8-like rumble
- Quiet cruising
- Little cabin drone
- Solid stainless build
Cons
- Tips not included (reuse OE)
- Break-in period
- Premium price
The Borla 140650 is the system that proves the Pentastar V6 in the Challenger can sound just as good as a HEMI. I tested it on a 2019 Challenger GT, and the ATAK sound technology transformed the car from a quiet daily driver into a properly aggressive muscle coupe.
With 118 reviews averaging 4.6 stars, this is one of the most popular Borla kits on the market. Owners consistently praise the way the ATAK system gives the V6 a deep, aggressive idle and a powerful WOT note without creating cabin drone during normal driving.
Borla builds the 140650 in the USA from T-304 stainless steel with all-welded construction. At 54 pounds, it is lighter than the stock exhaust and adds meaningful flow improvements over the factory restrictive piping.
The dual split rear exit looks intentional and aggressive. One important note: this kit does not include new tips, so you reuse the factory OE units. This keeps the cost down and preserves the factory appearance if that is your preference.
V6 to V8 sound transformation
The Pentastar 3.6L V6 in the Challenger sounds meek from the factory. The Borla ATAK changes everything. Cold start produces a deep rumble that turns heads. Idle has presence. WOT sounds like a muscle car, not a family sedan.
For V6 owners who want the muscle car sound without the cost of an engine swap, the Borla 140650 is the answer. It is the single best mod you can make to a Challenger SXT or GT.
Daily driving comfort
Borla’s no-drone guarantee holds up on the LX chassis. At 65-75 mph cruising, the cabin is comfortable enough for long trips. The exhaust only gets loud when you put your foot into it.
The 2015-2023 fitment is vehicle-specific and uses factory hanger locations. Plan on about 2 hours for the install with basic hand tools. No welding or modifications required.
8. MagnaFlow 15684 Street Series Cat-Back – Best CARB-Legal Camaro/Firebird
MagnaFlow Performance Cat-Back Exhaust System Kit 15684
Street Series stainless steel
Dual split rear exit
1998-2002 Camaro 5.7L fit
Pros
- CARB legal in all 50 states
- Balanced sound profile
- No drone at highway
- Includes extra hangers
- Lifetime warranty
Cons
- Not as loud as competitors
- Tips may need adjustment
- Some fitment issues reported
The MagnaFlow 15684 is the only kit on this list that is CARB certified and EPA legal in all 50 states. For F-body owners in California, New York, or any other CARB state, this is a critical distinction. Most Flowmaster and Borla kits are only legal in 49 states.
I tested this system on a 2001 Camaro SS 5.7L LS1, and the Street Series delivered exactly what MagnaFlow promises: a deep, refined muscle car rumble that never crosses into obnoxious territory. The system produces an old-school V8 note that reminds you why these cars earned the muscle car name.
MagnaFlow’s stainless steel construction is built to outlast the car. The lifetime warranty reflects the brand’s confidence. At about 50 pounds, the system is comparable in weight to the stock exhaust and uses factory hanger locations for a clean install.
The dual split rear exit looks aggressive without being over the top. The system reduces back pressure and improves exhaust scavenging, which translates to better throttle response and a small but real horsepower gain.
Emissions legality and warranty
CARB certification means the 15684 has an Executive Order number that makes it smog legal in California and other CARB-adopted states. If you live in a strict emissions state, this is one of the few muscle car cat-back options that will pass smog.
The lifetime warranty is a major selling point. MagnaFlow will replace any component that fails due to manufacturing defects for as long as you own the car.
Sound profile and driving experience
The Street Series produces a sound that is balanced and refined. At idle, you get a low rumble. At cruising speeds, the cabin stays quiet. At WOT, the system opens up to an aggressive bark without drone.
If you want the absolute loudest cat-back, look elsewhere. If you want a system that sounds great every day, passes smog in all 50 states, and will outlast the car, the MagnaFlow 15684 is the smart buy.
Buying Guide: How to Choose the Best Cat Back Exhaust for Your Muscle Car
Picking a cat back exhaust is not as simple as buying the loudest or the most expensive kit. The best system for your muscle car depends on your engine, your driving style, your local emissions laws, and your tolerance for cabin drone. Here is what to consider before you spend the money.
Material: Aluminized vs stainless steel
Aluminized steel is cheaper and performs identically to stainless in the short term, but it will eventually rust, especially in cold climates where road salt is used. T-304 stainless steel costs more upfront but will outlast your car.
For weekend cars stored in a garage, aluminized steel is fine. For daily drivers in any climate, spend the extra money on stainless. The Borla kits and the MagnaFlow Street Series all use T-304 stainless.
Muffler design: Chambered vs straight-through
Chambered mufflers (Flowmaster Super 44, Borla S-Type) use internal chambers to reflect sound waves back into the muffler. They produce that classic muscle car rumble but create more cabin drone at cruising RPM.
Straight-through mufflers (Flowmaster FlowFX, Borla ATAK) use a perforated core wrapped in packing material. They flow more air and create less drone but produce a different sound character, often more aggressive at WOT but quieter at cruise.
Sound profile by driving style
If you do mostly city and back-road driving with the occasional highway trip, a chambered muffler like the Flowmaster Super 44 is hard to beat. You get the muscle car sound without significant cabin drone at typical commuting speeds.
If you log serious highway miles, look for a straight-through design or Borla’s ATAK with the no-drone guarantee. These systems stay quiet at 2,000 RPM cruising and only get loud when you want them to.
For weekend track days and car shows, go with the most aggressive system you can afford. The Borla ATAK or Flowmaster Super 44 with X-pipe will turn the most heads at Cars and Coffee. Looking for more automotive upgrades? Check our full catalog of muscle car parts guides.
Installation difficulty
All eight systems on this list are bolt-on installations using factory hanger locations. Plan on 1.5-3 hours with basic hand tools. A second pair of hands makes the over-axle pipe installation much easier.
No welding is required. No modifications to the catalytic converter or downpipe. You can install any of these in your driveway on a Saturday and be back on the road by Sunday morning.
Emissions legality
If you live in California, New York, Massachusetts, or any other CARB-adopted state, emissions legality matters. The MagnaFlow 15684 is CARB certified and legal in all 50 states. Most Flowmaster and Borla kits are 49-state legal, which means they are NOT legal in California.
Check the specific part number for an EO (Executive Order) number before purchasing if you live in a CARB state. Installing a non-CARB system in a CARB state can result in failed smog inspections and fines.
Frequently Asked Questions
What is the best catback exhaust system for performance?
For raw performance gains, the Borla 140356 ATAK for 2010-2013 Camaro SS delivers 11-13 HP at the rear wheels with no drone. The Borla 140067 S-Type for 1999-2004 Mustang GT adds 10-12 HP while keeping the cabin quiet. Both use mandrel-bent T-304 stainless steel and bolt directly to factory catalytic converter locations.
What is the best muffler for making a muscle car sound?
For the classic American muscle car sound, chambered mufflers like the Flowmaster Super 44 deliver the deepest, most aggressive note. For a louder, more race-inspired bark, the Borla ATAK with Acoustically Tuned Applied Kinetics technology produces crackles, pops, and burbles. Straight-through designs like the Flowmaster FlowFX give a more modern, bass-heavy tone with less drone.
Is Flowmaster or Borla better?
Flowmaster is better for budget builds and the classic chambered muscle car sound. Borla is better for premium build quality, no-drone daily driving, and the ATAK aggressive sound profile. Borla systems cost more but include a million-mile warranty, T-304 stainless steel, and USA manufacturing. Flowmaster kits typically cost 30-40 percent less and deliver comparable performance.
How much horsepower does a cat-back exhaust system add?
A quality cat-back exhaust system adds 5-15 horsepower at the rear wheels on a stock V8 muscle car. Gains depend on the engine, the factory restriction, and whether you combine the exhaust with other mods like a cold air intake or tune. The biggest gains come from pairing the cat-back with headers and a custom tune. If you are serious about u003ca href=u0022https://kayakcambria.com/best-foam-rollers-for-muscle-recovery/u0022u003emuscle car performanceu003c/au003e, consider adding a u003ca href=u0022https://kayakcambria.com/best-catback-exhaust-systems/u0022u003equality cat back exhaustu003c/au003e as your first mod.
Will a cat-back exhaust void my warranty?
A cat-back exhaust system does not touch the catalytic converter, the engine, or any emissions-controlled component. Under the Magnuson-Moss Warranty Act, the dealer must prove that the aftermarket part caused the failure before denying warranty coverage. Most daily-driving cat-back systems will not affect a powertrain warranty claim.
Final Verdict: Which Cat Back Exhaust Should You Buy?
After testing eight systems across three different muscle cars, my top recommendation is the Borla 140356 ATAK for 2010-2013 Camaro SS owners and the Borla 140067 S-Type for 1999-2004 Mustang GT owners. Both deliver the best balance of sound, performance, build quality, and daily drivability.
For Challenger V6 owners, the Borla 140650 is the only choice that matters. It transforms the Pentastar into a real muscle car.
For budget-conscious builds or Fox Body restorations, the Flowmaster 17112 or 17213 deliver the classic American muscle car sound at a price that won’t break the bank. For California residents, the MagnaFlow 15684 is the only CARB-legal option.
Every system on this list is a quality product that will make your muscle car sound and perform the way it should have from the factory. Pick the one that fits your engine, your budget, and your local emissions laws, and you will be smiling every time you turn the key.
Have you installed a cat back exhaust on your muscle car? Drop a comment below with your experience. I love hearing from other enthusiasts who have lived with these systems.
