We researched and compared the loudest exhaust systems for cars and trucks based on manufacturer specifications, published decibel ratings, and aggregated owner feedback. Our evaluation focuses on sound output, build quality, ease of installation, and real-world durability. Whether you want a straight-pipe roar or a deep, aggressive tone, these picks deliver maximum volume.
| Photo | Product | Score | Buy |
|---|---|---|---|
|
🚗
|
Borla ATAK Cat-Back Exhaust System Best Overall Loudness Cat-back, 304 stainless steel, dual 4-inch tips |
9.2 | 🛒 Check Price |
 |
Flowmaster Outlaw Series Axle-Back Exhaust Best Axle-Back for Noise Axle-back, 3-inch mandrel-bent tubing, dual 4-inch tips |
8.8 | 🛒 Check Price |
 |
MagnaFlow Street Series Cat-Back Exhaust Best Deep Tone Cat-back, 304 stainless steel, single 4-inch tip |
8.4 | 🛒 Check Price |
 |
Corsa Performance Sport Cat-Back Exhaust Best Drone-Free Loudness Cat-back, 304 stainless steel, dual 3.5-inch tips |
8.1 | 🛒 Check Price |
 |
MBRP Armor Plus Cat-Back Exhaust Best Value Loudness Cat-back, 409 stainless steel, dual 4-inch tips |
7.8 | 🛒 Check Price |
|
🚗
|
Dynomax Bullet Muffler (Welded In) Best Muffler Swap for Raw Volume Straight-through bullet muffler, 2.5-inch inlet/outlet |
7.3 | 🛒 Check Price |
 |
AWE Tuning Track Edition Cat-Back Exhaust Best for European Cars Cat-back, 304 stainless steel, dual 3.5-inch diamond-black tips |
7.0 | 🛒 Check Price |
1. Borla ATAK Cat-Back Exhaust System: Best Overall Loudness
The Borla ATAK is engineered for maximum volume, using patented acoustic tuning to produce a raw, uncompromised roar. Based on owner feedback and the spec sheets, it consistently ranks as one of the loudest off-the-shelf cat-back systems. The T-304 stainless steel ensures longevity, even in harsh climates, and the mandrel-bent tubing minimizes backpressure for slight power gains.
However, this exhaust is not for daily drivers who value cabin comfort. The drone at cruising speeds can be fatiguing on long trips. We recommend it for weekend track cars or show vehicles where noise is a priority. If you need a quieter highway cruiser, consider a system with a resonator or adjustable baffles.
- Acoustic Tuning and Aerodynamic Kits (ATAK) deliver the loudest sound from Borla
- T-304 stainless steel construction resists corrosion and cracking
- Direct fit with mandrel-bent tubing for maximum flow
Pros: Extremely aggressive, race-inspired sound; Lifetime warranty on materials and workmanship
Cons: Significant drone at highway speeds
2. Flowmaster Outlaw Series Axle-Back Exhaust: Best Axle-Back for Noise
The Flowmaster Outlaw delivers a massive sound upgrade without breaking the bank. In our evaluation, it produces one of the deepest, most aggressive tones in the axle-back category. The 3-inch mandrel-bent tubing and large diameter tips create a free-flowing exhaust note that turns heads. Owner feedback highlights the straightforward installation, making it a favorite among DIYers.
However, the aluminized steel construction is less durable than stainless steel, especially in areas with road salt. We recommend this for warm climates or garage-kept vehicles. If you live in the rust belt, consider the stainless version or plan for eventual replacement.
- Outlaw series is the loudest Flowmaster offers
- Aggressive, deep tone with minimal interior drone
- Simple bolt-on installation with included hardware
Pros: Huge sound improvement over stock; Good value for the volume
Cons: Aluminized steel may rust in salt-belt states
3. MagnaFlow Street Series Cat-Back Exhaust: Best Deep Tone
MagnaFlow’s Street Series offers a deep, muscular sound that appeals to enthusiasts who want volume with character. Based on owner feedback, it is less raspy than many straight-through designs, making it suitable for daily driving. The 304 stainless steel and lifetime warranty provide peace of mind for long-term ownership.
That said, it is not the absolute loudest option on the market. If you want ear-splitting decibels, the Borla ATAK or a straight-pipe setup will outperform it. We recommend the MagnaFlow for those who want a noticeable increase in volume without overwhelming drone or harshness.
- Deep, rumbling sound without excessive rasp
- Lifetime warranty on stainless steel construction
- Direct fit for most popular car and truck models
Pros: Rich, low-pitched tone; High-quality materials
Cons: Not as loud as some competitors; Slight drone at certain RPMs
4. Corsa Performance Sport Cat-Back Exhaust: Best Drone-Free Loudness
Corsa’s Sport system uses patented RSC (Reflective Sound Cancellation) technology to deliver a loud, aggressive tone when you step on it, but near-stock quietness when cruising. This makes it a top choice for daily drivers who want the best of both worlds. In our evaluation, it is one of the loudest under full throttle, yet drone-free on the highway.
However, the price premium may not justify the sound level for those who prioritize pure volume over refinement. Some owners note that it is not as loud as a straight-pipe or Borla ATAK at idle. If you want maximum decibels at all times, this might not satisfy.
- Reflective cancellation technology eliminates drone
- Aggressive sound under throttle, quiet at cruise
- High-quality stainless steel with polished tips
Pros: No highway drone; Intelligent sound management
Cons: Expensive for the volume output; Sound may be too refined for some
5. MBRP Armor Plus Cat-Back Exhaust: Best Value Loudness
The MBRP Armor Plus provides a loud, aggressive exhaust note without the high cost. In our research, it is one of the most affordable ways to significantly increase volume. The 409 stainless steel is durable but more prone to surface rust than 304, though the lifetime warranty covers defects. Owner feedback generally praises the sound, though some report fitment issues requiring adjustment.
We recommend this for budget-conscious buyers who want a loud exhaust and don’t mind occasional tinkering. If you live in a corrosive environment or want a perfect bolt-on experience, consider spending more on a 304 stainless system.
- Aggressive sound at a budget-friendly price
- Mandrel-bent tubing for smooth flow
- Lifetime warranty on materials
Pros: Excellent value for the volume; Deep tone with minimal rasp
Cons: 409 stainless steel less corrosion-resistant; Fitment can be tricky on some models
6. Dynomax Bullet Muffler (Welded In): Best Muffler Swap for Raw Volume
The Dynomax Bullet Muffler is a straight-through design that offers minimal sound attenuation, making it a favorite for those who want maximum volume through a custom exhaust. Based on owner feedback, it produces a raw, unrestricted roar that rivals straight pipes. Its compact size allows it to be installed in place of a stock muffler or as part of a full system.
However, this is not a bolt-on solution; installation requires cutting and welding. It also provides no drone control, so highway cruising can be fatiguing. We recommend this only for experienced DIYers or track cars where noise is not a concern. If you want a simple bolt-on, look at axle-back options.
- Minimal sound deadening, extremely loud
- Compact design fits in tight spaces
- Allows custom exhaust configurations
Pros: One of the loudest muffler options; Inexpensive way to increase volume
Cons: Requires welding or fabrication; No drone control, very loud at all times
7. AWE Tuning Track Edition Cat-Back Exhaust: Best for European Cars
The AWE Tuning Track Edition is engineered for European performance cars, delivering a sharp, aggressive exhaust note that complements turbocharged engines. In our evaluation, it is one of the loudest options for BMW, Audi, and VW models. The 304 stainless steel and precision fitment ensure longevity and easy installation for those with mechanical skills.
However, the high price and limited vehicle compatibility make it a niche pick. It also tends to drone at low RPMs, which may bother some drivers. We recommend this only for European car enthusiasts who prioritize sound and are willing to pay a premium. For other vehicles, the Borla or Flowmaster offer better value.
- Designed for European makes (BMW, Audi, VW)
- Track Edition is the loudest AWE offering
- Diamond-black tips for a stealthy look
Pros: Excellent build quality; Aggressive, high-performance sound
Cons: Very expensive; Limited application to specific models
Frequently Asked Questions
What is the loudest exhaust system for a car?
Based on our research, the Borla ATAK Cat-Back Exhaust System is consistently rated as one of the loudest off-the-shelf systems. It uses acoustic tuning to produce a raw, race-inspired roar. For maximum volume, a straight-pipe or muffler delete (like the Dynomax Bullet) can be even louder, but may not be street legal in all areas.
Will a loud exhaust damage my engine?
No, a properly designed aftermarket exhaust will not damage your engine. In fact, most cat-back systems improve exhaust flow, which can slightly increase horsepower. However, extremely loud setups that remove catalytic converters or resonators may cause check engine lights or fail emissions tests. Always check local laws before modifying your exhaust.
How do I choose between cat-back and axle-back?
Cat-back systems replace everything from the catalytic converter back, offering a more complete sound and performance upgrade. Axle-back systems only replace the muffler and tips, making them easier to install and cheaper. For maximum loudness, cat-back systems generally produce more volume, but a well-designed axle-back (like the Flowmaster Outlaw) can also be very loud.
Will a loud exhaust drone on the highway?
Many loud exhausts produce drone at cruising speeds, especially those without resonators or drone-canceling technology. The Corsa Performance Sport uses Reflective Sound Cancellation to eliminate drone while maintaining loudness under throttle. If drone is a concern, look for systems with Helmholtz resonators or similar features.
Are loud exhausts legal?
Laws vary by state and country. Most aftermarket exhausts are legal as long as they stay within local noise limits (typically 95 decibels or less). Removing catalytic converters is illegal in many areas. We recommend checking your local regulations before purchasing. Track-only systems like the Dynomax Bullet may not be street legal.
Our Verdict
After researching and comparing the loudest exhaust systems, our top pick is the Borla ATAK Cat-Back Exhaust for its unmatched volume, build quality, and aggressive sound. For a more balanced option with drone-free cruising, the Corsa Performance Sport is an excellent runner-up. Both deliver exceptional loudness while maintaining quality and durability.
