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Top 10 Best Exhaust System For GMC Sierra: Review Guide [2022]

You are probably reading this because you are interested in knowing the best exhaust system for the GMC Sierra. What other reasons would you have for reading this article if not? Don’t worry, you are at the right place, and you can depend on our extensive, unbiased review of the top 10 best exhaust system for GMC Sierra.

One of the critical functions of an exhaust system is its ability to maintain good engine performance and mileage.

Most drivers depend completely on what exhaust gives as an indication of the engine performance, particularly when it comes to the sound it produces and the nature of exhaust that comes out.

As such, we are giving an unbiased review of the best and commonly used ones with an appropriate buying guide to aid your selection.

If you want an exhaust system with a nice sound and, more importantly, one with an absolute zero drone in the cabin even when it drops down in the echo mode, then you need to select the best exhaust system.

It is usually confusing to choose the best of this system because there are numerous options available in the market.

Besides, there are some other factors to be put into consideration, such as a good Catalytic Converter, Exhaust manifold, tailpipe, and mufflers.

These, coupled with many other factors, are the pain point of any exhaust system. They give the identity of what the system is up to and the possibility of its functionalities to fit what you aimed.

Comparison Table

Borla : 140537
Flowmaster : 817689
Magna Flow : 15267
Flowmaster : 817669
Borla : 140546
Flowmaster : 817666
Borla : 140571
Magna Flow : 15270
Corsa : 14866
Borla Cat-Back : 140544

What is the Best  Exhaust System for GMC Sierra?

BORLA Cat-Back 140537 Exhaust System is the best exhaust system on the market according to our well-researched report. Flowmaster 817689 can be recommended alternatively if the previous one does not meet up with expectations.

Why BORLA Cat-Back 140537 Exhaust System is the Best Exhaust system for GMC Sierra?

We chose BORLA Cat-Back 140537 as the best choice when it comes to the value for money and its ease of installation. You can install this powerful exhaust system without the help of a professional.

For the price, you will get a badass exhaust system for your car, especially if you prefer the aggressive sound.

The sound is loud and deep, which is good if you are the type that people want to know that you are coming but not deep enough to disturb the neighborhood.

Top 10 Best Exhaust System For GMC Sierra – Review & Buying Guide

01. BORLA -140537 


Highlighted Features :

  • Has rolled edge tips
  • Well polished appearance
  • Tips made of stainless steel
  • Has split rear exit
  • Give inform on engine sound
  • 300-rear steel

Product Specifications:

  • Item weight is not precisely mentioned
  • Brand – BORLA
  • Its Model number is 140537
  • The Product proportions  are not specifically mentioned

Do you want an exhaust system with incredible power output and better fuel economy? If this is what you want, it means Borla 140537 is what you need as it will be the perfect solution to your need.

It is the ideal choice for people who love aggressive sounds and are interested in using their trucks to recuperate maximum acoustics.

You will not only get a cutting-edge exhaust system; you will also enjoy an enhanced and powerful system that is attuned to a loud and aggressive exhaust note.

This product includes an innovative exhaust technology, also recognized as ATAK, which is an acronym of acoustically tuned applied kinetics.

With this technology, you should anticipate the decibel (dB) level of your sound system to be one with a very high standard and quality.

Also, you will not experience any form of interference or distortion when you are having some discussions in your automobile.

Just like a graphic equalizer, this system is finely tuned to sound. This process of harmonious tuning happens in such a manner that it suits the specifications of your truck.

Hence, you will always enjoy the sound that you want for not letting go of torque and power that is characteristic of the multi-core exhaust nature of BORLA.

It includes a non-machine-made fine-quality 300-series stainless steel and ultra-smooth mandrel-bent piping.


  • Small drone or altogether absent
  • Easy installation procedure and requires no professional
  • Forceful cold start tune
  • Includes more torque and power
  • Pleasant husky rumble when starting


  • It does not have a clamp.

02. FLOWMASTER – 817689 


Highlighted Features :

  • Constructed with stainless steel
  • Sound is super aggressive
  • Equipped with a Cat-back system
  • Blacktips made with ceramic material
  • Fitted with a Super 10 type muffler
  • Both inlet and outlet diameter is 3″ in size.

The Flowmaster exhaust system made with stainless steel is arguably one of the best models you will find on the market. Not only is the sound aggressive, but it is also very minimal meaning there is no disturbance to your neighbors.

This Cat-back Flowmaster Exhaust comes with a muffler which is Super 10. It also comes with 6 clamps that are about 3 inches in size and an additional 2 clamps necessary for installing and fitting the back.

“However, clamps are notorious for not being tightly-fitted, and you may need to wield them in several spots to keep it tight and strong. This will ensure it doesn’t twist and slip out of position.”


  • Does backfire or generate a popping sound when revved
  • It is easy to install
  • Pipes can be connected straight to the back bumper.
  • You can exit the pipe at the rear or side.


  • The clamps are loosely fit.
  • Generates a very unpleasant sound with a 4-cylinder vehicle

03. MagnaFlow -15267


Highlighted Features :

  • Has a polished exhaust system
  • Withstand corrosion
  • Single inlet and outlet
  • Has high-velocity expulsion
  • Has doubled- walled edge
  • Straight muffler system

Product specifications

  • Manufacturer: MagnaFlow
  • Brand: MagnaFlow Exhaust Products
  • Weight: 57 lbs
  • Product Dimensions: 59 x 22 x 14 inches
  • Item model number: 15267
  • Manufacturer Part Number: 15267

It can be a daunting task to get the best exhaust system for your vehicle. But with MagnaFlow, you are sure that most of your worries will vanish into thin air.

If you are in an active search for a system that is highly economical and performs greatly. This exhaust system provides a smooth, intense sound that is desirable.

It also features a wide-open performance power that will surely catch your fancy. If you want a loud acoustic exhaust system, then this product is not for you.

However, if what you desire is a mellow low tone exhaust system, then this is the perfect product for you. The product is from American cooperation with high-quality technical details.

MagnaFlow 15267 comes with straight-through current schemes for the decisive in unlimited torque and horsepower for great power while also preserving the efficiency of the exhaust.

These schemes are an engineered balance of exterior and interior levels of noise and are often compared with the SAE j11169 standards.

One prominent feature that this system comes with is the bolt-on installation scheme. This makes installation super-easy.

Although installation is almost always done efficiently by people with the right knowledge of professional installation, that is not to say that you cannot do it by yourself. Only that you might need to do a little bit of research.

It provides a proven power system with external performance sound and a great interior sound.


  • Easy installation
  • It is a relatively cheap alternative.
  • Its welds are precise and clean.
  • Usable to many vehicles
  • Its sound is nice and apt!


  • Peeling of the chrome is possible.

04. Flowmaster – 817669


Highlighted Features :

  • Has polished surface
  • Made with stainless steel
  • From high and reliable technology
  • Has custom fit
  • Great sound and tone
  • Has intermediate interior
  • Has aggressive exterior

Product specifications

  • System Style: Cat-Back
  • Exit Quantity: Two
  • Exit Location: Split rear/Split side
  • Quantity of the Muffler: single
  • Configuration of the Muffler: one inlet/Dual outlet
  • Style of the Muffler: Chambered
  • Material of the Muffler: It is made of Stainless steel
  • Finishing type of Muffler: Black ceramic coated
  • Tailpipe Diameter: 2.5 meters
  • Tip Outlet Size: 3.5 meters

Flowmaster 817669, a product of an American company, is the go-to exhaust system for those in need of a growling and deep, forceful sound.

This system decreases the level of fuel that your truck gulps without compromising on its power output.

The manufacturer of this product is a popular brand in the industry, and it is best known for making some of the best exhaust systems, particularly when it comes to enormous power gains, powerful tone, and cutting-edge design.

If what picks your interest in buying an exhaust system that comes with modest to forceful tone rates, irrespective of the fact that it can be outside or inside your truck, then Flowmaster 817669 is your best bet.

Just as you would expect, this is durable, courtesy of its stainless-steel build that features a super forty muffler series. Also, its tailpipes consist of the same stainless-steel build and double mandrel bent tubes.

A stainless steel polish that is used to polish its tips finishes it off. Most often you will be in a position to expose to moisture and other things, but with this exhaust system, you are guaranteed corrosion resistance.

This will also enhance the durability of the system too.

You do not have to give a second thought about welding because Flowmaster 817669 is very easy to install, courtesy of its bolt-on exhaust scheme. It is also dyna-tuned to make sure that you enjoy optimum torque and power.


  • The great sounding system as well as easy the installation procedure
  • Nice and deep, it is an aggressive exhaust system.
  • The look is amazing with a polished surface.
  • Fits many vehicle models


  • Clamps didn’t tighten enough to hold it together.
  • The left pipe and clamps assembly is not so desirable.

05. BORLA -140546


Highlighted Features :

  • Exits at both 90 and 45 degrees
  • Manufactured with an in-built Atak system
  • Possesses a very good clamp-on system
  • Designed and fitted with clamps
  • A design that suits a short-box crew cab

If you are looking for an exhaust system made specifically for a Chevrolet, the BORLA 140546 should be top of your list. It has a design with an Atak system that ensures it is well fitted with a short box crew cab.

This exhaust model has both a 90 degree and a 45-degree exit.  This means it can exit behind any of the vehicle’s rear wheels or through the sides. This BORLA model, however, does not exist from the back.

Nevertheless, you might need to get mud flaps to ensure the exits behind the rear wheels are protected from dirt. Fitted with a good clamp-on feature, the BORLA 140546 does not require any welding.


  • Installation is extremely easy
  • Sound is not only low but aggressive
  • Sound level not affected by the number of cylinders
  • Clamp needs no welding to hold tight


  • Doesn’t exit through the back

06. FLOWMASTER – 817666


Highlighted Features :

  • Made with a stainless steel material
  • It has multiple styles for exit
  • Its delta flow system is patented
  • Manufactured with a chrome tip
  • Designed with in-built clamps

The Force II rear exhaust manufactured by Flowmaster is made with a stainless steel coating that helps to protect it from rust.

Also, not only does it have a cat-back system, but it can also exit from multiple exits while making the vehicle sporty in appearance.

It comes fitted with a chrome tip and a delta type of flow system that has already been patented by Flowmaster, making it unique to the Force II exhaust.

Its design also includes clamps that help to hold the exhaust to the body of the vehicle.

“However, clamps have proven not to always hold tight and often come off loose again in a situation where they get tight. This may require you employ the services of a welder to weld the exhaust to the body of the vehicle.”


  • Generates a gentle and powerful sound when driving
  • The installation process is relatively easy.
  • Gives your truck a sporty look


  • Clamps are loosely fitting and not easy to bolt in.
  • It causes an increase in gas mileage.

07. BORLA – 140571 


Highlighted Features :

  • Has highly smooth mandrel
  • High power and maximum flow
  • Has a round and angle-cut tip
  • Comes with a rear exit
  • Great and informative sounds

Product Specifications:

  • The Brand name is Borla.
  • Weight of the Item is 55 lbs.
  • The Model   Number is 140571
  • Dimensions of the Product are not specified.

The BORLA system of exhaust 140571, an S-type system of cat exhaust with T304 stainless steel. The GMC systems of exhaust also have a three-plus half-inch muffler as well as a pipe with an inch diameter of 2 to 1/4.

Also, the single system of exhaust has a double outlet that is usually called a rear split exit.

The top is made of stainless steel T304. This feature makes it easy and faster for the exhaust to expel its contents. In addition, it helps enhance the durability of the product due to the fact that it will be resistant to corrosion.

This exhaust system also has a polished surface to give it a pleasant appearance as well as resistance to dirt.


  • It has an aggressive and throaty tone.
  • High torque and power
  • Swift installation without the presence of any professional
  • High control and effective
  • Stable and Durable
  • Ideal fitment
  • Can be used by many vehicles effectively.


  • It may become quiet when sliding downhill on the road.

08. MagnaFlow –15270 


Highlighted Features :

  • Comes with a 5.3-liter extended cab
  • Fitted and designed with a straight flow system
  • It welded and designed to serve for longer.
  • The design includes a cat-back system.
  • Comes with dyno-tested parts

Engineered to serve your vehicle for a long time, the 15270 exhaust from MagnaFlow is not only a high-performance model but also works smoothly, generating a deep and friendly sound.

The MagnaFlow exhaust has a design with a flowing design that is straight. This ensures the exhaust retains its efficiency while increasing its torque and horsepower.

The MagnaFlow exhaust is all-welded, and Dyno tested. This means its power-making capability has been proven.

Furthermore, the MagnaFlow cat-back exhaust has been tested with SAEj1169 standards. It can exit at the sides and also at the rear.


  • Not difficult to install
  • No loose parts
  • Has a deep and smooth sound
  • Increased amounts of torque and horsepower


  • Generates terrible sound with a 4-cylinder vehicle

09. CORSA – 14866


Highlighted Features :

  • Highly durable
  • Made with stainless steel
  • Polished surface resistive to corrosion
  • Comes with RSC noise cancellation
  • Ability to turn off the unwanted sound
  • The muffler is able to reflect sound waves.

Product specifications

  • Manufacturer: CORSA
  • Brand: Corsa
  • Item Weight: 70 lbs
  • Item number model: 14866
  • Manufacturing Part Number: 14866
  • OEM Number Part: 14866
  • Folding: No

This is also one of the best GMC sierra lone exhaust systems, which are produced with coupled patented reflective sounds.

It has higher horsepower and torque due to the fact that the pressure is usually lowered to increase the flow of power, which increases fuel efficiency.

Corsa 14866 Consist of high-class materials like stainless steel mandrel bends with tips handcrafted, with double phase. The clamps are made to fit perfectly with high definition.


  • It is flexible to use
  • Very simple to install.
  • It has very high horsepower and torque.
  • Fixable to many new model vehicles
  • It has low pressure.


  • It is limited in usage.

10. Borla : Cat-Back – 140544


Highlighted Features :

  • Polished surface to prevent corrosion
  • Made from austenitic steel
  • Has of CNC for accuracy

Product Specification:

  • Manufacturer: Borla
  • Model: 140544
  • Brand: Borla
  • Item model number: 140544
  • OEM Part Number: 140544
  • Item Weight: 5 pounds
  • Manufacturer Part Number: 140544

Cat-Back 140544 comes with a patented and straight-through multi-core technological advancement to give excellent power. Comes with an improved velocity of exhaust and acts as an acceleration booster.

It has a superb sound and the ability to save fuel and get excitement and fun driving with this exhaust system.

The system is constructed to give the best durability and performance due to the mandrel bend.

A precise outfit is ensured with the aid of CNC. It’s considered one of the world’s most trusted exhaust system.


  • Highly durable
  • Saves money
  • Worlds trusted exhaust
  • Gives an excellent sound


  • Not very good for jeeps

Buying Considerations

In a general sense, when you perfect any plan to buy any product, there must be some functionalities that must have triggered such.

But when it comes to tech-related products; extra care must be taken to get the best out of what you invest. As such, there is a need to read the reviews of the product, including the pros and the cons vehemently.

That will serve as a guide to know the strength, weakness, and potential threat if there is any. Technology advancement has enhanced some features of a lot of products in the world.

This means that when you want to purchase technically inclined products, you should consider the trend of technology.

But with us, you are absolutely guaranteed only the best. That’s the reason for the inclusion of pros and cons for a proper guide.

In addition, the product features and specifications are there to inform you about the product before you make the purchasing decision.

Here are some more guides to help you when deciding on the best exhaust system:

GMC Sierra has many products.

As such, it’s important to check out distinguish features and the ones that will benefit us more. Also, the fits and size of each must be verified to match the intended use. Here are some guides for a perfect selection of the products.

The Borla exhaust system has been known to have superior performance. It is one of the award-winning exhaust systems. You can install it easily and has superior performance to any other brand or product.

Anyone in need of an excellent system of exhaust, then try the Borla exhaust. Definitely, you will be happy with the outcome of its performance.

Brand flow master has also been deemed an excellent choice due to its broad range of usage with five characteristic sounds.

In most analyses, there has been the criterion that distinguishes it from all other exhaust systems.

And you know how great sound can be in automobiles; they serve as the communicator between the machine and the human; that the driver and the car.

As such, if you are going for an excellent and varieties of sound, a Brand flow master should be your choice. Also, it has high durability and resists corrosion.

Flowmaster 817669 Cat-Back System is also unique and very durable because it is made up of well fabricated and quality materials, which makes it last longer. In essence, when you buy this product, there is an assurance of quality.

The quality materials used in manufacturing this exhaust system makes enhances its resistance to environmental hazards that the product might be exposed to.

Such hazards include moisture that can damage many exhaust systems.

The magma flow has a junk collector that helps to trap the hair instead of releasing them into the atmosphere. It has some unique features like a polished surface, durable material, and the ability to withstand high temperatures.

The Corsa 14866 is also good because of its high torque energy and horsepower. Users of this product have made it known that hardly any exhaust system can match it when it comes to power.

What this means is that it will save money and last longer.

Frequently asked questions

As usual, there are questions that prospective buyers have, and only when these questions are answered,  will they see reasons to go for a particular product. That is the reason why we want to make sure everything is covered.

Also, these questions will provide a clearer picture of the product at hand so as to have an excellent understanding of what you are about to buy.

Note that the questions may not necessarily cover everything, but the most important and general parts are sure to be covered.

Especially as regards variation in vehicles and choices that may fit your own scenario. The following are some of the questions as well as their proper answers.

Which one of the mentioned exhaust system is perfect for trapping air in a vehicle?

Which of the exhaust system has varieties of products?

The Brandflow master has varieties of products that create at least five distinctive sounds designed for different vehicles to suit its purpose.

This means that you can buy different products suited for different vehicles. Also, the size is customizable to fit what you want.

Which of the sierra lone exhaust system last longer?

The Flowmaster 817669 Cat-Back System exhaust system lasts longer, and it is durable because it is made up of well-fabricated quality materials.

However, almost all the exhaust systems in our review last relatively long.

However, it is quite expensive because of its quality ratio. As such, you will definitely get results for your investment when you use this exhaust system.

What criteria should I consider when choosing an exhaust type to use?

The first thing is to consider what is perfect for your vehicle. Surely, what is great for others may not be for some specific users.  Therefore, prioritize the configuration that will suit your purpose.

Also, consider the environment you are living in. The influence of the environment is inevitable, and that makes it necessary to watch out for some environmental factors like moisture, humidity, and the duration and intensity of sunlight.


There are various types and brand products of GMC Sierra Leone. All products have a specific difference, which differentiates them from others.

No doubt you will agree with our extensive review of the best exhaust system for your GMC Sierra.

All GMC Sierra Leone exhaust products are good, ranging from the Borla 140537 exhaust system, Flowmaster, Flowmaster 817669, Cat-Back 140544, magnaflow152670, and the Corsa 14866.

Borla 14053 exhaust systems seem to be the best exhaust system because of their uniqueness and their more easy installation process.

Also, Flowmaster 817669 Cat-Back System also lasts longer because of its durability, the Flowmaster 817689 has various sound ranges, and Corsa14866 has great efficiency because of its torque and horsepower.

Making the best choice that is peculiar to your use is important since that will enhance high efficiency and durability.

Also, it’s necessary to be wary of the environment when making these choices, as some are more prone to be affected than others.

If you’re looking for the best exhaust system, then the sierra lone exhaust system has the best it can offer you, ranging from the types of products that suits your demand.

An exhaust and also brand flow master is also qualified to be the best because of its wide range of usage with five distinctive sounds.

The Magnaflow also has a junk collector that helps to trap the air instead of releasing them into the atmosphere.

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