Upgrading the exhaust on your FJ Cruiser can unlock more power, improve sound, and reduce weight. We researched and compared seven top exhaust systems using manufacturer specs, published performance data, and aggregated owner feedback from forums and Amazon reviews. Our evaluation focuses on real-world gains, build quality, and ease of installation. Here are the best options for your FJ Cruiser.
| Photo | Product | Score | Buy |
|---|---|---|---|
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Borla Cat-Back Exhaust System 140449 Best Overall Cat-back, T-304 stainless steel, 3-inch tubing, dual rear exit |
9.2 | 🛒 Check Price |
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MagnaFlow Cat-Back Exhaust System 19306 Best Value Cat-back, stainless steel, 2.5-inch tubing, single exit |
8.7 | 🛒 Check Price |
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Flowmaster Outlaw Cat-Back Exhaust System 817685 Loudest Sound Cat-back, aluminized steel, 3-inch tubing, dual exit |
8.2 | 🛒 Check Price |
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Gibson Performance Exhaust System 61852 Best Sound Quality Cat-back, aluminized steel, 3-inch tubing, dual exit |
8.4 | 🛒 Check Price |
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Corsa Performance Cat-Back Exhaust System 24910 No Drone Design Cat-back, T-304 stainless steel, 3-inch tubing, dual rear exit |
8.8 | 🛒 Check Price |
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AFE Power Cat-Back Exhaust System 49-46202 Best for Off-Road Cat-back, T-304 stainless steel, 3-inch tubing, single exit |
7.8 | 🛒 Check Price |
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Rugged Ridge Cat-Back Exhaust System 13307.01 Budget Pick Cat-back, aluminized steel, 2.5-inch tubing, single exit |
7.3 | 🛒 Check Price |
1. Borla Cat-Back Exhaust System 140449: Best Overall
Based on our research and owner feedback, the Borla 140449 cat-back system is the top performer for the FJ Cruiser. It uses T-304 stainless steel and mandrel-bent tubing to reduce backpressure and improve exhaust flow. Owners report a deep, aggressive sound that is not overly loud on the highway, with no drone. The system is a direct bolt-on and includes all necessary hardware, making installation straightforward for a DIY enthusiast.
However, the Borla system commands a higher price than many alternatives. If you are on a strict budget, this may not be the best choice. Also, the sound may be too loud for those seeking a stock-like experience. We recommend this for owners who prioritize performance and build quality above all else.
- Aircraft-quality T-304 stainless steel resists corrosion and rust.
- Patented multi-core muffler delivers a deep, aggressive tone without drone.
- Mandre-bent tubing ensures smooth exhaust flow for maximum power gain.
Pros: Excellent build quality and fitment.; Noticeable horsepower and torque gains across the RPM range.
Cons: Premium price point compared to competitors.
2. MagnaFlow Cat-Back Exhaust System 19306: Best Value
The MagnaFlow 19306 cat-back system offers an excellent balance of performance and value. We compared it against other budget-friendly options and found that its stainless steel construction and lifetime warranty are rare at this price point. The sound is deeper than stock but not overly loud, making it a good daily driver choice. Owner feedback highlights easy installation and a noticeable improvement in throttle response.
On the downside, the single exit design may not appeal to those wanting a dual exhaust look. Also, the tubing diameter is smaller than some competitors, which might limit peak power gains on heavily modified engines. Skip this if you want an aggressive, high-volume exhaust or a dual outlet setup.
- Durable stainless steel construction with a lifetime warranty.
- Straight-through perforated core muffler for a smooth, deep tone.
- Designed for easy bolt-on installation with pre-welded hangers.
Pros: Very competitive price for a quality stainless steel system.; Lifetime warranty provides confidence.
Cons: Sound is more mellow than some aggressive systems.
3. Flowmaster Outlaw Cat-Back Exhaust System 817685: Loudest Sound
The Flowmaster Outlaw 817685 is for FJ Cruiser owners who want the loudest possible exhaust. Based on owner reviews and sound clips, this system is a very aggressive on the market. It uses a large 3-inch diameter and a straight-through design to produce a deep, rumbling tone that is especially pronounced under acceleration. The weight savings are also notable, shedding about 20 pounds compared to stock.
However, the aluminized steel construction is less corrosion-resistant than stainless steel, which could be a concern in areas with road salt. Additionally, the extreme volume may lead to drone at highway speeds, and some owners report fitment issues requiring minor adjustments. This exhaust is not ideal for those who want a subtle upgrade or who frequently tow or off-road quietly.
- Flowmaster's Outlaw series is known for its aggressive, race-inspired sound.
- Large 3-inch mandrel-bent tubing maximizes exhaust flow.
- Includes a polished stainless steel tip for a custom look.
Pros: Extremely loud and aggressive sound that turns heads.; Significant weight reduction over the stock exhaust.
Cons: Aluminized steel may rust over time in salt-belt regions.
4. Gibson Performance Exhaust System 61852: Best Sound Quality
The Gibson 61852 cat-back system is praised by owners for its balanced sound quality. In our evaluation of owner feedback, many described the tone as deep and muscular without being obnoxious. It provides a noticeable improvement in low-end torque, which is beneficial for off-roading and towing. The installation is straightforward, with all hardware included and a direct fitment.
That said, the aluminized steel construction is a compromise for durability, especially in areas with winter salt. Some users also report that the sound is not as loud as they expected. If you prioritize long-term corrosion resistance or want an extremely loud exhaust, this may not be your first choice.
- Gibson's Superflow muffler design reduces backpressure while controlling sound.
- Mandrel-bent tubing for consistent flow and power gains.
- Bolt-on installation with no cutting required.
Pros: Deep, mellow tone that is not overly loud.; Good low-end torque improvement for off-road use.
Cons: Aluminized steel may not last as long as stainless in harsh climates.
5. Corsa Performance Cat-Back Exhaust System 24910: No Drone Design
The Corsa 24910 is engineered for those who want a performance exhaust without the drone. Using patented RSC technology, this system delivers a strong, aggressive tone when you step on the gas but is nearly silent during steady cruising. We researched numerous owner reports and found consistent praise for the drone-free experience. The T-304 stainless steel construction ensures longevity and a show-quality appearance.
However, this system comes at a high price, and the sound may not be as loud as some enthusiasts desire. Additionally, the dual rear exit requires cutting the bumper or using a specific trim, which adds installation complexity. Skip this if you are on a tight budget or prefer a raw, uncorked exhaust note.
- Corsa's patented RSC (Reflective Sound Cancellation) technology eliminates drone.
- 100% stainless steel construction for maximum durability.
- Produces a powerful sound under acceleration but quiet at cruise.
Pros: Zero drone at highway speeds, a major plus for daily driving.; High-quality T-304 stainless steel with a polished finish.
Cons: Premium price, among the most expensive options.
6. AFE Power Cat-Back Exhaust System 49-46202: Best for Off-Road
The AFE Power 49-46202 is designed with off-road enthusiasts in mind. Its single exit routing keeps the exhaust tucked up and out of the way, reducing the risk of damage on trails. We compared its specifications with other systems and found it offers a good balance of performance and durability. Owner feedback indicates a noticeable improvement in throttle response and a moderate increase in sound volume.
On the downside, some owners report that the exhaust note becomes raspy under hard acceleration, which may not appeal to everyone. The single exit also means you lose the dual exhaust look. If you frequently off-road and need a solid, high-clearance exhaust, this is a solid choice, but it may not be the best for daily driving due to the sound characteristics.
- T-304 stainless steel with a brushed finish for corrosion resistance.
- Free-flowing muffler design increases horsepower and torque.
- Lightweight construction reduces overall vehicle weight.
Pros: Good ground clearance due to single exit design.; Increased exhaust flow improves engine breathing.
Cons: Sound can be raspy at higher RPMs according to some owners.
7. Rugged Ridge Cat-Back Exhaust System 13307.01: Budget Pick
The Rugged Ridge 13307.01 is the most budget-friendly exhaust option for the FJ Cruiser. It provides a modest upgrade over stock, with a slightly deeper sound and a small performance gain. We found that owner reviews are generally positive for the price, noting that installation is simple and the system fits well. The chrome tip adds a touch of style.
However, the aluminized steel construction is a significant drawback for long-term durability, especially if you live in an area with road salt or high humidity. The sound is also less refined than more expensive systems, with some drone reported. This exhaust is best suited for those on a tight budget who are willing to compromise on longevity and sound quality.
- Affordable aluminized steel construction.
- Straight-through muffler design for improved flow.
- Includes chrome tip for a custom appearance.
Pros: Lowest price among the systems we evaluated.; Simple design with easy bolt-on installation.
Cons: Aluminized steel is prone to rust in corrosive environments.
Frequently Asked Questions
Will a cat-back exhaust increase my FJ Cruiser's horsepower?
Yes, a cat-back exhaust can increase horsepower by reducing backpressure and improving exhaust flow. Based on manufacturer claims and owner feedback, gains typically range from 5 to 15 horsepower, depending on the system and other modifications. However, the increase is often more noticeable in throttle response and torque than peak horsepower.
Is it difficult to install a cat-back exhaust on an FJ Cruiser?
Most cat-back systems are designed for bolt-on installation and can be done at home with basic hand tools. We researched owner experiences and found that the average installation time is 1 to 3 hours. However, some systems may require cutting the stock exhaust or adjusting hangers, so following the manufacturer’s instructions is important.
What is the difference between aluminized steel and stainless steel exhausts?
Aluminized steel has a coating that resists corrosion but can eventually rust, especially if the coating is damaged. Stainless steel, particularly T-304, offers superior corrosion resistance and a longer lifespan. In our evaluation, stainless steel systems are more durable but also more expensive. For areas with harsh winters or coastal climates, stainless steel is recommended.
Will a new exhaust affect my FJ Cruiser's emissions or warranty?
Cat-back exhausts do not replace catalytic converters, so they should not affect emissions compliance. However, some systems may be louder than legal limits in certain areas. Regarding warranty, the Magnuson-Moss Act protects your vehicle warranty, but the manufacturer may deny claims if the exhaust caused damage. We recommend keeping your stock exhaust for potential reinstatement.
How do I choose between a single exit and dual exit exhaust?
Single exit systems are often lighter, cheaper, and provide better ground clearance for off-roading. Dual exit systems offer a more aggressive look and can improve flow slightly but may require bumper cutting. Based on owner feedback, the choice largely comes down to aesthetics and intended use. For off-road, single exit is practical; for street, dual exit is popular.
Our Verdict
After researching and comparing the top exhaust systems for the FJ Cruiser, our top pick is the Borla 140449 for its exceptional build quality, performance gains, and deep sound without drone. For a more budget-friendly option that still delivers great value, the MagnaFlow 19306 is our runner-up, offering stainless steel construction and a lifetime warranty at a competitive price.
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