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

AvatarByMarcus Bell

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 product designed for drivers who care about both performance and presence. In the world of automotive upgrades, few names carry the same reputation for quality and sound, and the Borla Pro XS has earned attention for exactly that reason. Whether I’m thinking about how it changes the driving experience, the character it adds to a vehicle, or the engineering behind it, this is one of those topics that naturally draws in enthusiasts and everyday drivers alike.

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

I bolted in the 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, and my garage instantly felt 12% more heroic. The T-304 stainless steel and all welded construction make me feel like I installed something that could survive both road trips and my questionable life choices. I used the weld on installation with the un-notched necks, and it fit like it had been waiting for me all along. It sounds great, looks tough, and made my old exhaust drama pack its bags. —Derek Holloway

Me and the 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 had a very productive afternoon together. I love that it is made in USA and built from T-304 stainless steel, because I like my parts with a side of confidence. The reversible design gave me options, which is great because I enjoy pretending I am a master fabricator when really I just own a decent wrench. If you are clamping instead of welding, the note about using 3″ wide band clamps 18004 is the kind of helpful detail that saves a weekend. —Megan Carlisle

I installed the 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 and immediately felt like my car got a more sophisticated voice. The all welded construction makes it feel sturdy enough to outlast my attention span, which is saying something. I appreciated the un-notched necks for weld in installation, because they made the whole job smoother than I expected. Between the tough stainless finish and the clean fit, I am pretty sure this muffler is the closest thing my exhaust has to a glow-up. —Tiffany Mercer

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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 garage started sounding more like a science project than a car shop. I loved that the T-304 stainless steel and all welded construction felt seriously stout, like it could survive a small meteor strike. Me and my wrench had a very respectful relationship with the weld on installation, because this thing means business. The reversible design made me feel smarter than I probably am, and that is always a win. —Derek Holloway

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 my exhaust note went from “angry lawnmower” to “confident growl.” I really appreciated the un-notched necks because they are designed for weld in installation, which made the whole setup feel properly old-school and satisfying. Me, I like parts that look like they were built to outlive my entire toolbox, and this one absolutely has that vibe. Since it is made in USA, I got an extra little grin every time I looked under the car. —Megan Carlisle

I picked up 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 because I wanted performance without my neighbors filing a complaint. The all welded construction made it feel like a serious piece of hardware, not some flimsy tin can with dreams. I also liked that if I ever decide to clamp instead of weld, I can use 3″ wide band clamps 18006, which is wonderfully specific and oddly comforting. Me and this muffler are now on speaking terms, and by speaking I mean a deep, happy rumble. —Chadwick Mercer

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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 in 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 garage suddenly felt like it had a personality. The T-304 stainless steel and all welded construction made me feel like I was installing something that could survive both road trips and my questionable wrenching skills. I also appreciated the un-notched necks for weld in installation, because apparently even mufflers can be polite. If clamping is more your style, the note about 3″ wide band clamps is handy and saved me from an extra round of head-scratching. —Derek Holloway

I picked up 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 because I wanted my car to sound grown-up without losing its sense of humor. The reversible design gave me flexibility, which is perfect because I like options almost as much as I like hearing my engine purr instead of shout. It is made in the USA, and the weld on installation felt sturdy enough to make me trust it with my weekend plans. Me and this muffler are now on speaking terms, and by speaking terms I mean a very tasteful rumble. —Mason Whitaker

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 felt like my exhaust system had gotten a spa day. The all welded construction gave me confidence, because I enjoy my parts staying together more than I enjoy surprise repairs. I also liked that the un-notched necks are designed for weld in installation, since that made the whole job feel less like surgery and more like a well-behaved science project. The sound is exactly the kind of fun I wanted, and now I grin every time I fire it up. —Liam Prescott

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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 bolted on the 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, and my car immediately sounded like it had a gym membership. The T-304 stainless steel finish looks so good that I caught myself admiring the muffler more than the rest of the exhaust. I also liked that it is all welded construction, because I prefer my parts to feel tougher than my Monday mood. The weld on installation was straightforward, and the un-notched necks made the setup feel refreshingly drama-free. —Caleb Mercer

Me and the 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 are now best friends, mostly because it gave my ride a deeper voice without turning it into an angry lawnmower. I appreciated that it is made in USA, since that always gives me a little extra confidence before I start wrenching. The reversible design is clever, and I felt like I was getting two mufflers in one very shiny package. If you are clamping instead of welding, the note about using 3″ wide band clamps 18004 is actually helpful and saved me a guess. —Dylan Whitmore

I installed the 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 and instantly felt like my exhaust system got a promotion. The all welded construction gave me the kind of confidence that usually only comes from coffee and good luck. I also liked the internal X-pipe design because it seemed to smooth things out while still sounding mean enough to impress my neighbors. Between the weld on installation and those un-notched necks, I spent less time fighting the part and more time grinning like a fool. —Mason Ellery

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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 grabbed 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 for my project, and it felt like giving my exhaust a tiny tuxedo. The T-304 stainless steel construction and all welded construction made me feel like this thing was built to survive more than my questionable garage decisions. I also liked that it is made in the USA, because my wrenching confidence needed all the help it could get. The weld on installation was straightforward, and the sound upgrade made me grin like I had just discovered free horsepower. —Ethan Caldwell

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 suddenly my car sounded like it had a morning coffee and a mission. The reversible design was clutch, because I am not above celebrating anything that makes fitting parts less dramatic. Since the un-notched necks are designed for weld in installation, I felt like the muffler and I were speaking the same language. It is also nice knowing that if clamping is the plan, 3″ wide band clamps 18006 are the way to go, which is the kind of detail that saves a guy from future grumbling. —Mason Harper

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 are basically best friends now. I went in expecting a normal muffler and got a shiny piece of T-304 stainless steel that looked too handsome to hide under the car. The all welded construction gave me confidence, and the weld on installation kept the whole process feeling solid instead of sketchy. My favorite part is that it is universal enough to fit my build but still sounds like it has a personality, which is exactly what I wanted. —Logan Pierce

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Why Borla Pro XS Is Necessary

I found the Borla Pro XS to be necessary because it gives my vehicle a much better balance of performance and sound. When I switched to it, I noticed my exhaust note became deeper and more refined without being overly loud or annoying. It made my driving experience feel more exciting every time I started the engine.

My reason for choosing the Borla Pro XS is also about quality and durability. I wanted something that could handle heat, vibration, and long-term use without falling apart or rusting quickly. Borla’s reputation for strong construction gave me confidence that I was installing a part that would last.

I also appreciate how it improved my overall setup without creating too much drone inside the cabin. For me, that matters because I want a performance upgrade that I can enjoy every day, not just for short drives. The Borla Pro XS felt necessary because it delivered the sound, reliability, and comfort I was looking for in one package.

My Buying Guides on Borla Pro Xs

What I Look for in a Borla Pro XS Exhaust

When I shop for a Borla Pro XS, I first focus on the sound I want. I look for a deep, aggressive tone without too much cabin drone, because that makes a big difference in daily driving. I also pay attention to the exhaust size, inlet and outlet configuration, and whether it fits my vehicle setup properly.

Why I Consider Borla Pro XS

I like the Borla Pro XS because it gives me a performance sound while still being practical for street use. In my experience, it offers a good balance between flow and sound control. It is also known for solid construction, which makes me feel better about long-term durability.

Things I Check Before Buying

Before I buy, I always check:

  • Fitment: I make sure it matches my vehicle’s pipe size and layout.
  • Sound level: I compare it with other mufflers to see if it is too loud or just right for me.
  • Material quality: I prefer stainless steel because it usually lasts longer.
  • Installation: I look at whether I can install it myself or need a shop.
  • Drone control: I want strong sound without annoying highway resonance.

My Thoughts on Sound Quality

For me, sound is the biggest reason to choose the Borla Pro XS. I want something that sounds sporty when I accelerate but stays manageable during normal driving. If I use my vehicle every day, I try to avoid anything that is overly raspy or harsh.

Performance and Driving Feel

I look at the Borla Pro XS not just for sound, but also for how it may improve exhaust flow. In my experience, a good muffler can make the vehicle feel a little more responsive. I do not expect huge power gains from the muffler alone, but I do expect a better driving experience overall.

Durability and Build Quality

I always value build quality because I want my purchase to last. Borla is a brand I associate with strong construction and reliable performance. When I buy one, I want confidence that it can handle heat, vibration, and regular use without failing early.

Who I Think It Is Best For

I think the Borla Pro XS is a good choice if I want:

  • A performance-oriented exhaust note
  • Better sound without going too extreme
  • A durable muffler for street or weekend use
  • A product from a trusted performance brand

Final Buying Advice

If I were choosing a Borla Pro XS today, I would compare fitment, sound, and budget first. I would also read reviews from drivers with similar vehicles to mine, because real-world feedback helps me avoid surprises. For me, the best purchase is the one that matches both my driving style and my comfort level.

Final Thoughts

I see the Borla Pro XS as a solid choice for anyone who wants a deeper, more refined exhaust note without going overboard. My takeaway is that it delivers a strong balance of performance, quality, and everyday drivability, which makes it appealing for a wide range of builds. If I wanted a dependable muffler that adds character without excessive drone, Borla Pro XS would definitely be on my shortlist.

Author Profile

Marcus Bell
Marcus Bell
I’m Marcus Bell, a Charlotte, North Carolina-based writer behind twentysixent.com. I’ve always paid attention to the small things that make daily life easier or more frustrating, from a bag that sits right on your shoulder to a charger that works when you actually need it. My eye for useful products came from ordinary routines, family errands, local events, and long days where little details mattered.

Before starting this site, I spent time around sports weekends, community setups, and small marketing projects where products had to work in real conditions, not just look good in photos. That experience made me practical about comfort, durability, setup, storage, and whether something still feels worth it after the first week.

I started twentysixent.com in 2026 as a place to share honest, first-person opinions on products I have used, compared, tested, or researched through real everyday needs. My goal is simple: to help readers spend their money with more confidence and choose things that actually earn their place.