Upgrading your diesel truck’s exhaust system can unlock horsepower, improve fuel economy, and give you that deep, authoritative sound. But with so many options on the market, choosing the right one is critical. We researched manufacturer specifications, industry standards, and aggregated owner feedback to compare the most popular diesel exhaust systems. Our evaluation focuses on real-world performance gains, build quality, ease of installation, and long-term durability. Whether you tow heavy loads, daily drive, or compete in truck pulls, this guide will help you find the best match for your diesel engine.
| Photo | Product | Score | Buy |
|---|---|---|---|
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MBRP S5093708 4" Aluminized Exhaust System Best Value 4" aluminized steel, turbo-back, muffler delete option |
9.0 | 🛒 Check Price |
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Banks Power Monster Exhaust System 49914 Top Pick 4" stainless steel, dyno-tuned, includes Banks torque tube |
9.3 | 🛒 Check Price |
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AFE Power 49-31003-BP Mach Force XP Exhaust Best Sound 5" stainless steel tip, 4" mandrel-bent tubing, black powder-coated |
8.7 | 🛒 Check Price |
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Flowmaster 817672 Outlaw Series Exhaust System Aggressive Tone 4" mandrel-bent tubing, stainless steel muffler, aluminized pipes |
8.4 | 🛒 Check Price |
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Diamond Eye Performance 4" Turbo-Back Exhaust System Budget Pick 4" aluminized steel, turbo-back, mandrel-bent |
7.8 | 🛒 Check Price |
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MBRP S6119AL 4" Aluminized Turn-Down Exhaust Simple Install 4" aluminized steel, turn-down tip, muffler delete |
7.3 | 🛒 Check Price |
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Aero Turbine 4540 Diesel Exhaust System Unique Design 4" aluminized steel, Aero Turbine resonator, turbo-back |
8.1 | 🛒 Check Price |
1. MBRP S5093708 4" Aluminized Exhaust System: Best Value
The MBRP S5093708 is a popular choice for diesel owners seeking a balance of performance and affordability. In our evaluation, this turbo-back system consistently receives praise for its straightforward installation and immediate throttle response gains. Owner feedback highlights a deep, aggressive tone without excessive drone, making it suitable for daily drivers. The mandrel-bent 4-inch tubing ensures minimal flow restriction, which is critical for turbocharged diesel engines.
However, the aluminized steel construction is a real limitation for those in road-salt states or coastal areas. Over time, corrosion can become an issue, and the included muffler delete pipe may be too loud for some neighborhoods. If you need maximum corrosion resistance or quiet operation, consider a stainless system or a muffled variant. Skip this if you plan to keep your truck for many years in harsh environments.
- Turbo-back design maximizes exhaust flow and reduces backpressure
- Mandrel-bent tubing improves gas flow and prevents restrictions
- Aluminized steel construction offers good corrosion resistance at a lower cost
Pros: Excellent price-to-performance ratio; Noticeable power and sound improvement
Cons: Aluminized steel less durable than stainless in harsh climates
2. Banks Power Monster Exhaust System 49914: Top Pick
The Banks Power Monster Exhaust System is our top pick for diesel owners who demand proven performance and exceptional durability. We compared it against other premium systems, and Banks stands out for its dyno-validated gains and innovative torque tube design that smooths exhaust flow. Owner feedback consistently reports noticeable increases in towing power and a clean, aggressive sound without drone. The 409 stainless steel construction is highly resistant to rust and cracking.
That said, the Banks system commands a premium price, and the torque tube adds complexity to installation. Some owners report that the included instructions could be clearer. If you are on a tight budget or prefer a simpler design, this might not be the best fit. Skip it if you want a budget-friendly option or if you plan to install it yourself without mechanical experience.
- Dyno-proven gains of up to 20 hp and 40 lb-ft torque
- 409 stainless steel construction for long life and corrosion resistance
- Patented Banks torque tube reduces turbulence and improves flow
Pros: Real-world performance gains backed by testing; High-quality stainless steel build
Cons: Higher price point than many competitors
3. AFE Power 49-31003-BP Mach Force XP Exhaust: Best Sound
The AFE Power Mach Force XP is a favorite among diesel enthusiasts who prioritize sound and style. In our evaluation, this cat-back system delivers a deep, throaty tone that turns heads without being obnoxious. The 5-inch black powder-coated tip gives a custom look, and the mandrel-bent 4-inch tubing ensures better flow than stock. Owner reviews frequently mention the easy installation and the noticeable improvement in throttle response.
However, because this is a cat-back rather than a turbo-back system, the performance gains are modest compared to a full replacement. Some owners wish it included a downpipe for maximum power. If you are seeking maximum horsepower gains, skip this and look at a turbo-back system. It is ideal for those who want a great sound and a visual upgrade without breaking the bank.
- Deep, commanding sound with minimal interior drone
- Black powder-coated tip for a stealth look
- Direct bolt-on installation with no cutting required
Pros: Excellent sound quality and appearance; Good build quality with stainless steel
Cons: Not a full turbo-back system, some power left on table
4. Flowmaster 817672 Outlaw Series Exhaust System: Aggressive Tone
The Flowmaster Outlaw Series is designed for diesel owners who want the loudest possible exhaust note. Based on owner feedback, this system produces a deep, aggressive rumble that is unmistakable. The combination of aluminized pipes and a stainless steel muffler provides a good balance of cost and longevity. Performance gains are modest but noticeable, especially in the mid-range.
However, the Outlaw’s aggressive sound comes with significant interior drone, which can be fatiguing on long trips. Some owners report that the drone is worse than expected, even with the included muffler. If you frequently tow long distances or value cabin comfort, skip this system. It is best for show trucks or weekend warriors who prioritize sound over comfort.
- Outlaw series delivers a loud, aggressive exhaust note
- Stainless steel muffler resists corrosion
- Mandrel-bent tubing for unrestricted flow
Pros: Very loud, ideal for those who want attention; Decent build quality for the price
Cons: Excessive drone on highway for some drivers
5. Diamond Eye Performance 4" Turbo-Back Exhaust System: Budget Pick
Diamond Eye Performance offers one of the most budget-friendly turbo-back exhaust systems for diesel trucks. In our research, this system provides a solid performance upgrade for those on a tight budget. The mandrel-bent 4-inch tubing reduces backpressure, and many owners report a 15-20 hp gain after installation. The aluminized steel construction keeps costs down.
But the trade-off is durability. In regions with road salt or high humidity, the aluminized coating can flake and rust within a few years. Additionally, some owners note that the hangers and clamps are not the highest quality, leading to alignment issues. If you live in a dry climate or do not mind replacing the system sooner, this is a good value. Skip it if you need long-term corrosion resistance.
- Complete turbo-back system at a low price point
- Mandrel-bent tubing for smooth flow
- Includes all necessary hardware and clamps
Pros: Very affordable for a full turbo-back system; Noticeable power increase over stock
Cons: Aluminized steel prone to rust in salt belt; Fitment can be tricky on some models
6. MBRP S6119AL 4" Aluminized Turn-Down Exhaust: Simple Install
The MBRP S6119AL is a straightforward exhaust system designed for quick installation and maximum sound. It is essentially a muffler delete with a turn-down tip that exits under the truck bed. Owner feedback highlights that installation can be completed in under an hour with basic hand tools. The sound is extremely loud, which appeals to some but can be a nuisance for others.
However, the turn-down design directs exhaust gases and soot onto the ground, which can create a mess and may not be legal in all areas. The lack of a muffler also results in significant drone inside the cabin, especially at highway speeds. If you need a system that is daily-driver friendly or if you live in an area with noise ordinances, skip this. It is best for off-road or show use only.
- Simple turn-down tip exits exhaust under truck
- Muffler delete option for maximum sound
- Easy bolt-on installation with basic tools
Pros: Very easy to install, no welding required; Low cost entry into diesel exhaust upgrades
Cons: Turn-down tip can cause ground clearance issues; No muffler leads to very loud, droning sound
7. Aero Turbine 4540 Diesel Exhaust System: Unique Design
The Aero Turbine 4540 stands out with its patented resonator that aims to reduce drone without sacrificing flow. In our evaluation, this system offers a unique sound profile that is less obtrusive than straight-pipe options while still providing performance gains. Owner feedback is generally positive about the power increase and the relatively quiet interior compared to other aggressive systems.
However, some owners report that the resonator can develop cracks after extended use, particularly under high heat. Additionally, Aero Turbine is not as widely available as MBRP or Banks, which can make replacement parts harder to find. If you want a distinctive sound with less drone, this is worth considering. Skip it if you need a proven, long-term system with easy support.
- Patented Aero Turbine resonator reduces drone while maintaining flow
- Mandrel-bent 4-inch tubing for performance
- Turbo-back design for maximum power gains
Pros: Unique resonator design balances sound and drone; Good performance gains at mid-range
Cons: Resonator can be prone to cracking over time; Not as well-known as other brands, parts availability
Frequently Asked Questions
What is the difference between cat-back and turbo-back exhaust systems?
A cat-back system replaces the exhaust from the catalytic converter back to the tailpipe, while a turbo-back system replaces everything from the turbocharger outlet back. Turbo-back systems offer greater performance gains because they remove the restrictive stock downpipe and catalytic converter, but they are more expensive and may require tuning.
Will a diesel exhaust system void my warranty?
Aftermarket exhaust systems can potentially void your vehicle’s warranty if they cause damage to emissions components or affect engine operation. However, under the Magnuson-Moss Warranty Act, the manufacturer must prove that the aftermarket part caused the failure. It is best to check with your dealer and keep stock parts for reinstallation if needed.
How much horsepower can I expect from a diesel exhaust upgrade?
Gains vary by system and engine. A cat-back system typically adds 5-10 hp and 10-20 lb-ft of torque, while a turbo-back system with a tune can add 20-40 hp and 40-80 lb-ft. Real-world results depend on the vehicle’s condition and other modifications.
Is a diesel exhaust system legal for on-road use?
Many aftermarket exhaust systems are not street legal in all states because they remove emissions equipment or exceed noise limits. Systems that delete catalytic converters or diesel particulate filters (DPF) are illegal for on-road use in most areas. Always check local laws before purchasing.
What is the best material for a diesel exhaust system?
Stainless steel (409 or 304) offers the best corrosion resistance and longevity, especially in harsh climates. Aluminized steel is more affordable but prone to rust over time. For maximum durability, choose stainless steel; for budget builds, aluminized steel is acceptable.
Our Verdict
After researching and comparing the top diesel exhaust systems, our top pick is the Banks Power Monster Exhaust System for its dyno-proven gains, exceptional build quality, and excellent durability. For those seeking the best value, the MBRP S5093708 provides a great balance of performance and affordability. If sound is your priority, the AFE Power Mach Force XP delivers a deep tone without breaking the bank. Choose based on your budget, towing needs, and sound preference.
