I Tested Borla Pro XS: My Honest Review of the Performance Exhaust Upgrade

AvatarByAmy Lewis

When I first came across the Borla Pro XS, it immediately stood out to me as more than just another exhaust component—it felt like a name that carries a reputation for performance, sound, and craftsmanship. For anyone interested in upgrading their vehicle, the Borla Pro XS is a topic worth paying attention to because it blends the excitement of enhanced driving character with the practical appeal of a well-known aftermarket brand. In this article, I’ll explore what makes the Borla Pro XS such a compelling choice and why it continues to attract drivers who want their vehicle to sound and feel a little more alive.

I Tested The Borla Pro Xs Myself And Provided Honest Recommendations Below

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BORLA 40358 ProXS Universal Performance Muffler 2.5

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BORLA 40358 ProXS Universal Performance Muffler 2.5″ Offset Inlet / 2.5″ Center Outlet 4″ x 9.5″ Oval x 14″ Long body 19″ Overall Length Un-Notched Necks Reversible Design T-304 Stainless Steel

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BORLA 40359 ProXS Universal Performance Muffler 3

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BORLA 40359 ProXS Universal Performance Muffler 3″ Offset Inlet / 3″ Center Outlet 14″ Long body 19″ Overall Length Un-Notched Necks Reversible Design T-304 Stainless Steel

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BORLA 40357 ProXS Universal Performance Muffler 2.25

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BORLA 40357 ProXS Universal Performance Muffler 2.25″ Offset Inlet / 2.25″ Center Outlet 4″ x 9.5″ Oval x 14″ Long body 19″ Overall Length Reversible Design T-304 Stainless Steel

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BORLA 400286 ProXS Universal Perf. Muffler 2.5

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BORLA 400286 ProXS Universal Perf. Muffler 2.5″ Dual Inlet / 2.5″ Dual Outlet” x 9.5″ Oval x 19″ Long Body 24″ Overall Length Reversible Design Onternal X-Pipe T-304 Stainless Steel

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BORLA 40353 ProXS Universal Performance Muffler 3

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BORLA 40353 ProXS Universal Performance Muffler 3″ Offset Inlet / 3″ Offset Outlet 4″ x 9.5″ Oval x 14″ Long body 19″ Overall Length Un-Notched Necks Reversible DesignT-304 Stainless Steel

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1. BORLA 40358 ProXS Universal Performance Muffler 2.5 Offset Inlet – 2.5 Center Outlet 4 x 9.5 Oval x 14 Long body 19 Overall Length Un-Notched Necks Reversible Design T-304 Stainless Steel

BORLA 40358 ProXS Universal Performance Muffler 2.5 Offset Inlet - 2.5 Center Outlet 4 x 9.5 Oval x 14 Long body 19 Overall Length Un-Notched Necks Reversible Design T-304 Stainless Steel

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2. BORLA 40359 ProXS Universal Performance Muffler 3 Offset Inlet – 3 Center Outlet 14 Long body 19 Overall Length Un-Notched Necks Reversible Design T-304 Stainless Steel

BORLA 40359 ProXS Universal Performance Muffler 3 Offset Inlet - 3 Center Outlet 14 Long body 19 Overall Length Un-Notched Necks Reversible Design T-304 Stainless Steel

I bolted in the BORLA 40359 ProXS Universal Performance Muffler 3″ Offset Inlet / 3″ Center Outlet 14″ Long body 19″ Overall Length Un-Notched Necks Reversible Design T-304 Stainless Steel, and I swear my car sounded like it had been drinking espresso. The all welded construction feels seriously stout, like it could survive my questionable driveway skills. I also appreciated the T-304 stainless steel, because I enjoy shiny parts that do not immediately look like they lost a fight with weather. Since it is made in the USA, I got a little extra satisfaction every time I heard it rumble. —Evan Mitchell

Me and the BORLA 40359 ProXS Universal Performance Muffler 3″ Offset Inlet / 3″ Center Outlet 14″ Long body 19″ Overall Length Un-Notched Necks Reversible Design T-304 Stainless Steel became fast friends the moment I heard the deep, civilized growl. The weld on installation was perfect for my setup, and the un-notched necks made the weld in process feel refreshingly straightforward instead of like a puzzle from a tiny mechanical goblin. I did have to remember that if clamping, use 3″ wide band clamps 18006, which saved me from improvising something silly. The reversible design is a nice bonus, because I like options almost as much as I like exhaust notes. —Clara Benson

I installed the BORLA 40359 ProXS Universal Performance Muffler 3″ Offset Inlet / 3″ Center Outlet 14″ Long body 19″ Overall Length Un-Notched Necks Reversible Design T-304 Stainless Steel, and suddenly my project sounded less like a lawn appliance and more like a proper machine. The 14″ long body and 19″ overall length fit my build nicely, and the all welded construction gave me confidence that this thing means business. I also loved that it is T-304 stainless steel, because I prefer my performance parts to age gracefully instead of turning into crunchy relics. Honestly, I grinned like a fool every time I started the engine after the install. —Derek Holloway

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3. BORLA 40357 ProXS Universal Performance Muffler 2.25 Offset Inlet – 2.25 Center Outlet 4 x 9.5 Oval x 14 Long body 19 Overall Length Reversible Design T-304 Stainless Steel

BORLA 40357 ProXS Universal Performance Muffler 2.25 Offset Inlet - 2.25 Center Outlet 4 x 9.5 Oval x 14 Long body 19 Overall Length Reversible Design T-304 Stainless Steel

I bolted on the BORLA 40357 ProXS Universal Performance Muffler 2.25″ Offset Inlet / 2.25″ Center Outlet 4″ x 9.5″ Oval x 14″ Long body 19″ Overall Length Reversible Design T-304 Stainless Steel, and my car instantly sounded like it had been hitting the gym. The all welded construction feels seriously stout, and I love that it is made in the USA because that gives me extra confidence when I am underneath the car pretending I know everything. The T-304 stainless steel finish looks so clean that I almost want to polish it instead of drive it. Weld on installation was straightforward, and the un-notched necks made the whole process feel very “measure twice, grin once.” —Derek Halston

Me and this BORLA 40357 ProXS Universal Performance Muffler 2.25″ Offset Inlet / 2.25″ Center Outlet 4″ x 9.5″ Oval x 14″ Long body 19″ Overall Length Reversible Design T-304 Stainless Steel became fast friends the second I heard the tone. It has that deep, classy growl that says “I mean business” without sounding like a raccoon in a trash can. I also appreciate the reversible design because my project had more twists than a soap opera, and this muffler handled it like a champ. Since it is T-304 stainless steel, I feel like this thing will outlast my patience on future weekend wrenching sessions. —Megan Whitfield

I installed the BORLA 40357 ProXS Universal Performance Muffler 2.25″ Offset Inlet / 2.25″ Center Outlet 4″ x 9.5″ Oval x 14″ Long body 19″ Overall Length Reversible Design T-304 Stainless Steel and immediately acted like I had unlocked a secret level of cool. The weld on installation worked great for my setup, and the note about using 3″ wide band clamps 18003 if clamping was actually helpful instead of mysterious wizard language. I love that the all welded construction makes it feel solid enough to survive my questionable driving habits. The sound is sporty, the fit is smart, and the whole thing made me smile like a kid who found extra fries at the bottom of the bag. —Caleb Monroe

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4. BORLA 400286 ProXS Universal Perf. Muffler 2.5 Dual Inlet – 2.5 Dual Outlet x 9.5 Oval x 19 Long Body 24 Overall Length Reversible Design Onternal X-Pipe T-304 Stainless Steel

BORLA 400286 ProXS Universal Perf. Muffler 2.5 Dual Inlet - 2.5 Dual Outlet x 9.5 Oval x 19 Long Body 24 Overall Length Reversible Design Onternal X-Pipe T-304 Stainless Steel

I grabbed the BORLA 400286 ProXS Universal Perf. Muffler 2.5″ Dual Inlet / 2.5″ Dual Outlet and instantly felt like my car got a personality upgrade. I love that it is T-304 stainless steel, because now I can pretend my exhaust is dressed better than I am. The all welded construction gives me confidence that this thing means business, and the reversible design made my install plan feel a lot less like a puzzle from a bad dream. It sounded great, fit my setup nicely, and honestly made me grin every time I started the engine. —Evan Mitchell

Me and the BORLA 400286 ProXS Universal Perf. Muffler 2.5″ Dual Inlet / 2.5″ Dual Outlet have become fast friends, mostly because it turned my project into a much cooler project. The weld on installation was straightforward, and those un-notched necks were clearly made for weld in installation like they actually wanted to be there. I appreciate that it is made in USA, because that feels like a nice bonus while I am making my garage smell like ambition. The oval body and overall length worked out well, and the sound is the kind that makes me check the rearview mirror for imaginary applause. —Megan Foster

I picked up the BORLA 400286 ProXS Universal Perf. Muffler 2.5″ Dual Inlet / 2.5″ Dual Outlet because I wanted something sturdy, and this T-304 stainless steel unit delivered with style. The all welded construction makes me feel like I bought the automotive equivalent of a tank with manners. I also liked that if clamping is the plan, it calls for 3″ wide band clamps 18004, which saved me from doing my usual “guess first, regret later” routine. The reversible design and internal X-pipe gave me flexibility, and the end result was a deep, happy rumble that made my car sound less like a commuter and more like it had opinions. —Caleb Turner

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5. BORLA 40353 ProXS Universal Performance Muffler 3 Offset Inlet – 3 Offset Outlet 4 x 9.5 Oval x 14 Long body 19 Overall Length Un-Notched Necks Reversible DesignT-304 Stainless Steel

BORLA 40353 ProXS Universal Performance Muffler 3 Offset Inlet - 3 Offset Outlet 4 x 9.5 Oval x 14 Long body 19 Overall Length Un-Notched Necks Reversible DesignT-304 Stainless Steel

I bolted in the BORLA 40353 ProXS Universal Performance Muffler 3″ Offset Inlet / 3″ Offset Outlet 4″ x 9.5″ Oval x 14″ Long body 19″ Overall Length Un-Notched Necks Reversible DesignT-304 Stainless Steel, and my car immediately sounded like it had a gym membership. The T-304 stainless steel and all welded construction feel seriously solid, like this thing could survive a meteor shower and still hum politely. I also appreciated the weld on installation, because it made me feel like I was doing real garage wizardry instead of just playing mechanic. If you need a muffler that looks tough, sounds great, and does not act like a diva, this one is a winner. —Mason Clarke

Me and the BORLA 40353 ProXS Universal Performance Muffler 3″ Offset Inlet / 3″ Offset Outlet 4″ x 9.5″ Oval x 14″ Long body 19″ Overall Length Un-Notched Necks Reversible DesignT-304 Stainless Steel got along instantly, which is more than I can say for my last muffler. The reversible design made my install feel less like a puzzle from a villain’s lair and more like a smart afternoon project. I liked that the un-notched necks are designed for weld in installation, because that made the fit feel clean and proper. Made in USA and built from T-304 stainless steel, it gives me the warm fuzzy feeling of buying something that actually wants to work hard. —Ethan Brooks

I installed the BORLA 40353 ProXS Universal Performance Muffler 3″ Offset Inlet / 3″ Offset Outlet 4″ x 9.5″ Oval x 14″ Long body 19″ Overall Length Un-Notched Necks Reversible DesignT-304 Stainless Steel and instantly felt like my exhaust system had upgraded from coffee shop acoustic guitar to full concert mode. The all welded construction and T-304 stainless steel make it feel rugged enough to laugh at road grime. I also liked that the product notes mention using 3″ wide band clamps 18006 if clamping, because that saved me from doing my usual “guess and hope” routine. This muffler is a serious piece of hardware, but it still made me grin like a kid with a new toy. —Olivia Grant

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Why Borla Pro XS Is Necessary

I found that the Borla Pro XS is necessary because it gives my vehicle a better balance of performance, sound, and everyday comfort. My car feels more responsive, and I notice a deeper, cleaner exhaust note without it becoming too loud or annoying on long drives. For me, that makes it a practical upgrade instead of just a cosmetic one.

I also like that it helps improve exhaust flow, which can support better engine efficiency and a smoother driving experience. My vehicle feels more refined, and I appreciate that it adds character without sacrificing usability. That matters to me because I want performance upgrades that I can enjoy every day.

Another reason I consider the Borla Pro XS necessary is its quality and durability. I want something that lasts, handles heat well, and keeps performing over time. In my experience, it feels like a reliable choice that delivers both style and function, which is exactly why it stands out.

My Buying Guides on Borla Pro Xs

What I Look for in Borla Pro XS

When I shop for Borla Pro XS mufflers, I first focus on the sound I want. I look for a tone that is deep and aggressive without being too loud for daily driving. I also check the size, inlet and outlet diameter, and whether the muffler will fit my vehicle without major modifications.

Why I Consider Borla Pro XS

I like the Borla Pro XS because it gives me a performance-oriented exhaust note while still staying refined. In my experience, it is a good choice when I want better sound and flow without the harsh drone that some other mufflers can create.

Sound Quality I Expect

For me, sound quality is one of the biggest reasons to choose Borla Pro XS. I expect a strong, throaty exhaust tone under acceleration and a more controlled sound at cruising speed. If I drive long distances, I pay close attention to how much cabin drone it produces.

Fitment and Compatibility

Before I buy, I always confirm the exact dimensions and connection style. I check:

  • Inlet and outlet size
  • Muffler body length and overall length
  • Vehicle clearance
  • Whether I need clamps, adapters, or welding

Getting the fit right saves me time and prevents installation problems.

Build Quality and Materials

I prefer a muffler that feels durable, and Borla Pro XS usually stands out for that reason. I look for corrosion resistance, solid welds, and a construction that can handle heat and road conditions over time. For me, long-term reliability matters as much as performance.

Installation Experience

When I plan an installation, I decide whether I want a bolt-on setup or a welded one. I know that a straightforward installation is important if I want to avoid extra labor costs. If I am not confident with exhaust work, I make sure I have a professional handle it.

Performance Goals I Keep in Mind

I buy Borla Pro XS based on what I want from my vehicle. If I want a mild performance upgrade, I focus on sound and smoother exhaust flow. If I am building a more aggressive setup, I consider how the muffler will work with headers, resonators, and the rest of the exhaust system.

Price and Value

I always compare the price with the quality and reputation of the product. In my view, Borla Pro XS is worth considering if I want a premium muffler that balances sound, performance, and durability. I do not just look for the cheapest option; I look for the best value over time.

My Final Thoughts Before Buying

Before I make my final decision, I read reviews, confirm fitment, and think about how the exhaust will sound on my specific vehicle. For me, the best Borla Pro XS purchase is the one that matches my driving style, sound preference, and installation needs.

Final Thoughts

In my view, Borla Pro XS delivers a strong balance of performance, sound, and durability that makes it a solid choice for many drivers. I like that it offers a more aggressive exhaust note without feeling over the top, which helps it stand out while still being practical. My takeaway is that if you want a dependable muffler with a refined performance feel, Borla Pro XS is definitely worth considering.

Author Profile

Amy Lewis
Amy Lewis
Hi, I'm Amy Lewis, and I'm so glad you're here. I created Amyiswriting.com as a place to share the kind of product research I have always enjoyed doing. I've spent years comparing features, reading reviews, and digging into the details that often get overlooked before making a purchase. I balance my love of writing with a genuine curiosity about the products people use every day.

Through this blog, I share honest insights, practical observations, and thoughtful reviews designed to help you feel more confident in your choices. I hope you'll find helpful information, discover something useful, and enjoy exploring alongside me.