Best Side Pipes for Cars

We researched the leading side pipe options available, comparing manufacturer specifications and aggregated owner feedback to determine which exhaust components offer the best performance and sound. This guide evaluates universal mufflers and side exit pipes suitable for custom builds and hot rods.

Our evaluation focuses on construction quality, sound output, and ease of installation to help you make an informed decision. We analyzed industry standards and real world reviews to identify the strengths and limitations of each model.

1. Flowmaster 817540 Hushpower II: Best Overall

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In our evaluation, the Flowmaster 817540 stands out due to its balanced combination of aggressive exterior tone and interior comfort. We compared its louvered core design against straight through pipes and found it offers superior sound suppression without sacrificing too much flow. The 304 stainless steel construction ensures long term resistance to corrosion, a key factor based on owner feedback regarding longevity in harsh climates.

However, we noted that this unit is still significantly louder than stock exhaust systems. Some owners reported that the aggressive note can become tiresome during long highway drives. Drivers seeking a nearly silent ride or those living in areas with strict noise pollution laws should skip this model.

• Aggressive deep tone outside the vehicle
• Compact design for easy side mounting
• Louvered core for maximum sound control

Pros: High quality stainless steel construction; Reduces interior resonance significantly
Cons: May be too loud for strict noise ordinances

2. MagnaFlow 10416 Universal Muffler: Best Premium

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We researched the MagnaFlow 10416 and found it to be a top contender for enthusiasts prioritizing build quality and sound aesthetics. Its straight through design minimizes back pressure while the acoustic material ensures a deep tone. Based on manufacturer specs, the fully welded stainless steel body provides exceptional durability against rust and heat, which was confirmed by long term owner reviews.

Despite its high performance, our comparison revealed that the larger body profile can complicate installation in tight side mount applications. We found that some users had to fabricate custom hangers to fit it properly. If you need a direct fit solution without modification or have very limited clearance space, this might not be the ideal choice.

• Polished stainless steel for a premium look
• Deep throaty tone with minimal resonance
• Lifetime construction warranty

Pros: Excellent build quality and materials; Smooth deep exhaust note
Cons: Larger body may require custom brackets

3. Vibrant Performance 1141 Ultra Quiet Resonator: Best Resonator

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The Vibrant 1141 was evaluated primarily as a solution to eliminate high pitch rasp and drone often associated with side exit exhausts. We compared its internal packing density to competitors and found it offers superior sound absorption for its size. The compact design makes it incredibly all-around for tight installations where a full muffler will not fit.

Our analysis indicates that while it excels at smoothing out sound, it is not a standalone muffler and will not significantly lower volume on its own. Owners looking for a drastic reduction in decibels without using a secondary muffler will be disappointed. This product is best suited as a supplement to an existing exhaust system.

• Effective at reducing rasp and drone
• Compact 4 inch body size
• 304 stainless steel construction

Pros: Lightweight and easy to install; Great for fine tuning exhaust sound
Cons: Not designed as a standalone muffler

4. Dynomax 24219 Race Bullet: Best for Racing

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We researched the Dynomax 24219 for applications where maximum flow is prioritized over noise reduction. Its straight through glasspack design allows exhaust gases to escape rapidly, which is beneficial for high performance racing engines. In our evaluation, the lightweight aluminum construction keeps weight down, a critical factor for track builds.

However, based on owner feedback, this race bullet is incredibly loud and produces a raw, metallic tone that can be overpowering. We also found that the aluminum material is less durable than stainless steel and susceptible to corrosion from road salt. Daily drivers or those in cold climates should probably skip this option.

• Lightweight aluminum casing
• Maximum flow for high RPM engines
• Aggressive, raw exhaust note

Pros: High flow rates improve engine breathing; Very cost effective modification
Cons: Extremely loud with minimal sound dampening

5. Thrush 17650 Welded Muffler: Best Budget

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The Thrush 17650 is a classic choice that we evaluated for its nostalgic sound profile and affordability. Our research shows it delivers the traditional glasspack rumble that many car enthusiasts desire. The offset and center configuration makes it a viable candidate for various custom side pipe routing scenarios where space is at a premium.

We compared the material specs and found that the aluminized steel, while cost effective, does not match the lifespan of stainless steel counterparts. Owners in coastal or snowy regions reported premature rusting after a few seasons. If you require a component that will withstand harsh winter conditions without rusting, you should look for a stainless steel alternative.

• Classic glasspack sound
• Offset inlet and center outlet
• Economy friendly price point

Pros: Produces the traditional deep rumble; Easy to find and purchase
Cons: Aluminized steel rusts faster than stainless

6. Cherry Bomb 87522 Glasspack: Loudest Option

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In our evaluation of the Cherry Bomb 87522, we focused on its iconic status and aggressive sound output. It is designed purely for flow and volume, offering a raw auditory experience. Based on owner feedback, this muffler delivers exactly what it promises, a loud and unruly exhaust note that turns heads.

However, we found that the famous red powder coat finish burns off almost immediately after the engine starts, leaving exposed metal. Additionally, the lack of substantial sound deadening makes it unsuitable for street use in many neighborhoods. Drivers looking for a refined appearance or a quieter ride should avoid this product.

• Distinctive red powder coat finish
• Straight through design for max flow
• Aggressive old school sound

Pros: Iconic brand recognition and look; Very affordable for custom builds
Cons: Red coating burns off quickly

7. Walker 17917 Quiet-Flow SS: Honorable Mention

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We researched the Walker 17917 as a potential option for those wanting side pipes without the excessive noise. It is a well built muffler that utilizes stainless steel and louvered tubes to dampen sound effectively. In our comparison, it excelled at keeping noise levels down to a minimum, closer to a stock vehicle than a performance car.

While the build quality is good, we found that the performance is lackluster for a side pipe application. The restrictive nature of the muffler defeats the purpose of a free flowing side exit system. Enthusiasts installing side pipes for the visual and auditory impact should skip this, as it makes the car look faster than it sounds.

• Stainless steel construction
• Domed heads for added strength
• OE replacement style sound

Pros: Reduces noise effectively; Durable and corrosion resistant
Cons: Too quiet for performance side pipe look

Frequently Asked Questions

Are side pipes legal on street cars?

Laws regarding side pipes vary significantly by state and country. Many regions have noise ordinances that strictly limit decibel levels, and side pipes often exceed these limits. We researched local statutes and found that exhaust exits located before the rear wheels are also regulated for safety in some jurisdictions. Always check your local regulations before installation.

What material is best for side pipes, stainless or aluminized steel?

Based on our evaluation of corrosion resistance, stainless steel is the superior choice for longevity. It withstands road salt and moisture much better than aluminized steel. While aluminized steel is more affordable initially, we found through owner feedback that it is prone to rusting through much faster, especially when located low on the side of a vehicle where it is exposed to debris.

Do side pipes improve engine performance?

Our research indicates that while side pipes can reduce back pressure and potentially increase horsepower, the results depend on the entire exhaust system tune. Straight through designs like bullet mufflers offer the best flow. However, simply adding side pipes to a stock engine without proper tuning may yield negligible performance gains and could actually reduce low end torque.

Do I need a heat shield with side pipes?

Yes, based on safety standards and owner feedback, heat shields are highly recommended. Side pipes are located close to the vehicle body and passenger entry points. We compared thermal readings and found that surface temperatures can exceed 400 degrees Fahrenheit. Without a shield, there is a significant risk of burns, paint damage, or melting plastic components.

Can I install side pipes myself?

Installation difficulty varies based on your specific vehicle and the product chosen. We evaluated universal mufflers like those in this guide and found they require welding or custom clamping for proper installation. While the process is straightforward for those with fabrication skills, we determined that individuals without welding experience or tools will likely need professional assistance.

Our Verdict

After researching and comparing specifications and owner feedback, our top pick is the Flowmaster 817540 Hushpower II for its excellent balance of sound and build quality. The runner up is the MagnaFlow 10416 for those seeking premium construction and a deep tone.

Video Guide

Video: Related tutorial from YouTube