We researched and compared the best exhaust systems for 4-cylinder vehicles, focusing on trucks and cars that benefit from improved exhaust flow and sound. Our evaluation is based on manufacturer specifications, published industry standards, and aggregated owner feedback. We considered performance gains, build quality, ease of installation, and real-world durability to bring you seven top options. Whether you want a deep tone, better throttle response, or a cat-back system that fits your budget, this guide has you covered.
| Photo | Product | Score | Buy |
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MagnaFlow 15106 Cat-Back Exhaust System Best Overall Cat-back, 2.5-inch mandrel-bent tubing, 304 stainless steel |
8.9 | 🛒 Check Price |
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Borla 140470 Cat-Back Exhaust System Top Performer Cat-back, 2.5-inch mandrel-bent tubing, 304 stainless steel, dual tips |
8.7 | 🛒 Check Price |
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Flowmaster Outlaw Series Cat-Back Exhaust Best Sound Cat-back, 2.5-inch mandrel-bent tubing, aluminized steel, single exit |
8.4 | 🛒 Check Price |
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Gibson Performance Exhaust 6452 Cat-Back System Best Value Cat-back, 2.5-inch mandrel-bent tubing, 409 stainless steel, dual split rear exit |
8.1 | 🛒 Check Price |
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Corsa Performance 21888 Cat-Back Exhaust System Premium Choice Cat-back, 2.5-inch mandrel-bent tubing, 304 stainless steel, dual polished tips |
8.6 | 🛒 Check Price |
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AWE Tuning 0FG Exhaust System Best for Turbo Cat-back, 3-inch mandrel-bent tubing, 304 stainless steel, single or dual tip options |
8.3 | 🛒 Check Price |
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MBRP S5016AL Cat-Back Exhaust System Budget Pick Cat-back, 2.5-inch mandrel-bent tubing, aluminized steel, single exit |
7.8 | 🛒 Check Price |
1. MagnaFlow 15106 Cat-Back Exhaust System: Best Overall
The MagnaFlow 15106 is a cat-back system designed for 4-cylinder trucks and SUVs. It uses 2.5-inch mandrel-bent tubing and a straight-through perforated core muffler to reduce backpressure and enhance exhaust flow. Owner feedback consistently praises the deep, mellow tone that is not overly loud on the highway. The 304 stainless steel construction resists rust and corrosion, making it a long-lasting investment.
However, the MagnaFlow 15106 is one of the pricier options on the market. If you are on a tight budget or prefer a more subdued sound, this might not be the best choice. Some owners reported fitment issues on certain model years, so double-check compatibility before purchase.
- Deep, aggressive tone without drone on highway
- TIG-welded 304 stainless steel for corrosion resistance
- Easy bolt-on installation with factory hangers
Pros: Excellent build quality and lifetime warranty; Noticeable mid-range torque improvement
Cons: Premium price point may not suit all budgets
2. Borla 140470 Cat-Back Exhaust System: Top Performer
The Borla 140470 cat-back system is engineered for performance enthusiasts. It features 2.5-inch mandrel-bent tubing and a straight-through muffler design that reduces backpressure and enhances exhaust flow. Owner feedback highlights a crisp, aggressive sound that is not too loud for daily driving. The system is built from 304 stainless steel and comes with a lifetime warranty, ensuring durability.
On the downside, the Borla system is one of the more expensive options. Some owners noted that the sound can be a bit too loud for those seeking a quiet cabin. If you prioritize a subtle exhaust note, consider a different system.
- Sporty, aggressive sound with minimal interior drone
- Aerospace-grade 304 stainless steel and patented technology
- Bolt-on installation with all hardware included
Pros: Excellent throttle response and horsepower gains; Lifetime warranty on materials and workmanship
Cons: Higher price than many competitors
3. Flowmaster Outlaw Series Cat-Back Exhaust: Best Sound
The Flowmaster Outlaw Series is a cat-back exhaust designed for 4-cylinder trucks and cars that want a bold, aggressive sound. It uses 2.5-inch mandrel-bent tubing and Flowmaster’s patented muffler technology to deliver a deep, raspy tone. Owner feedback indicates it is one of the loudest options on the market. The aluminized steel construction offers good durability at a lower cost.
However, the aluminized steel is less corrosion-resistant than stainless steel, so it may not last as long in snowy or coastal regions. The sound can also be overwhelming for daily commuters. If you need a quieter exhaust, look elsewhere.
- Loud, aggressive tone with classic Flowmaster sound
- Durable aluminized steel construction
- Easy bolt-on installation with factory hangers
Pros: Very affordable compared to stainless steel systems; Noticeable power gain in higher RPMs
Cons: Aluminized steel may rust in harsh climates; Can be too loud for some drivers
4. Gibson Performance Exhaust 6452 Cat-Back System: Best Value
The Gibson 6452 cat-back system offers a sweet spot between price and performance. It uses 2.5-inch mandrel-bent tubing and 409 stainless steel, which is more corrosion-resistant than aluminized steel but less expensive than 304 stainless. Owner feedback describes a mellow, deep tone that is not intrusive on the highway. The system includes all necessary hardware for a straightforward installation.
On the downside, the sound may not be aggressive enough for those seeking a loud exhaust. Some owners reported minor fitment issues requiring adjustment. If you want a budget-friendly upgrade with decent sound, this is a solid choice.
- Balanced sound: aggressive but not obnoxious
- 409 stainless steel for good durability at a lower cost
- Complete system with clamps and instructions
Pros: Great price for a full cat-back system; Noticeable performance improvement
Cons: Sound may be too mild for some enthusiasts; Fitment can be tight on some models
5. Corsa Performance 21888 Cat-Back Exhaust System: Premium Choice
The Corsa 21888 is a premium cat-back system designed to eliminate drone while providing a sporty sound. It features 2.5-inch mandrel-bent tubing and Corsa’s patented RSC (Reflective Sound Cancellation) technology. Owner feedback raves about the absence of drone on the highway and the crisp, aggressive sound under acceleration. The 304 stainless steel construction ensures long-lasting durability.
However, the Corsa system comes with a premium price tag that may be out of reach for many buyers. The sound, while refined, may not be loud enough for those who want an aggressive exhaust note. If budget is a concern, consider a more affordable option.
- Zero drone technology for a quiet highway ride
- High-quality 304 stainless steel with polished tips
- Easy installation with factory-style hangers
Pros: Excellent sound control with no drone; Premium fit and finish
Cons: Very expensive; Sound may be too refined for some
6. AWE Tuning 0FG Exhaust System: Best for Turbo
The AWE Tuning 0FG exhaust system is specifically engineered for turbocharged 4-cylinder engines. It uses 3-inch mandrel-bent tubing to reduce backpressure and improve turbo spool. Owner feedback highlights a deep, aggressive sound with minimal drone thanks to AWE’s patented drone-canceling technology. The 304 stainless steel construction ensures durability.
However, this system is tuned for turbo engines, so naturally aspirated 4-cylinders may not see the same benefits. It is also priced higher than many universal options. If you do not have a turbo, you may be better off with a different system.
- Designed for turbocharged 4-cylinder engines
- Maximizes flow with 3-inch tubing
- Drone-canceling technology for a comfortable ride
Pros: Significant performance gains on turbo engines; High-quality materials and construction
Cons: Higher price than some competitors; May not fit naturally aspirated engines optimally
7. MBRP S5016AL Cat-Back Exhaust System: Budget Pick
The MBRP S5016AL is a budget-friendly cat-back exhaust for 4-cylinder trucks and cars. It uses 2.5-inch mandrel-bent tubing and an aluminized steel muffler to provide a deeper tone without breaking the bank. Owner feedback notes that the sound is more aggressive than stock but not overly loud. The system is easy to install with basic hand tools.
However, the aluminized steel construction is less durable than stainless steel, and the performance gains are modest. If you live in a region with road salt or high humidity, this system may corrode faster. For the price, it is a decent entry-level option.
- Affordable upgrade for a deeper sound
- Aluminized steel with high-temp black paint
- Simple bolt-on installation
Pros: Very low price point; Noticeable sound improvement over stock
Cons: Aluminized steel may rust over time; Modest performance gains
Frequently Asked Questions
What is the best exhaust system for a 4-cylinder truck?
The best system depends on your priorities. For overall quality and sound, the MagnaFlow 15106 is a top choice. For a budget-friendly option, the MBRP S5016AL offers good value. We recommend considering your desired sound level and budget before purchasing.
Will a cat-back exhaust improve performance on a 4-cylinder?
Yes, a cat-back exhaust can reduce backpressure, which may improve horsepower and torque, especially at higher RPMs. The gains are typically modest (5-15 hp) but can be more noticeable on turbocharged engines. Our evaluation of owner feedback and manufacturer specs confirms these benefits.
How loud is a 4-cylinder exhaust compared to stock?
Aftermarket exhausts are generally louder than stock, but the volume varies by design. Systems like the Flowmaster Outlaw are very loud, while the Corsa Performance offers a sporty sound with minimal drone. Check owner reviews for sound clips specific to your vehicle.
Can I install a cat-back exhaust myself?
Most cat-back systems are designed for bolt-on installation and can be done with basic tools like socket wrenches and jack stands. However, some systems may require cutting or welding. Based on owner feedback, systems from MagnaFlow and Borla are among the easiest to install.
What is the difference between aluminized and stainless steel exhausts?
Aluminized steel is coated with aluminum for corrosion resistance and is more affordable, but it can rust over time if the coating is damaged. Stainless steel (304 or 409) is more durable and resistant to rust, but it costs more. For long-term use, we recommend stainless steel.
Our Verdict
After researching and comparing the top exhaust systems for 4-cylinder vehicles, our top pick is the MagnaFlow 15106 for its excellent build quality, deep sound, and overall performance. The runner-up is the Borla 140470, which offers a sporty tone and strong performance gains. Both systems are backed by strong owner feedback and industry standards.
