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Your cart is empty.Value-priced BORLA(R) ProXS mufflers share many of the hottest features of our performanceline. Including high-quality 300 Series austenitic stainless steel construction. Sizes are available for import anddomestic cars and trucks. Un-Notched necks are designed for weld in installation. If clamping, use 3 inches wide band clamps 18004. Alternate muffler with Notched necks is 400480. Use 1 inches wide band clamps 18325.
J.B.
Reviewed in the United States on September 6, 2024
I installed Borla 40358 ProXS Performance Muffler on my 2024 Hyundai Santa Cruse Turbo. I wanted more performance and better fuel economy. It has a very low growl at idle and opens up when you accelerate, with no drone, also my MPG increased by 10% too! Very pleased with it!
Karl Borgen
Reviewed in the United States on September 4, 2024
my Sport now does not sound like its trying to blow through a small straw it added more torque and horse power but also another 1 to 2 MPG
Blackhawk
Reviewed in the United States on July 4, 2024
Put on a Tacoma 4.0 doesn't sound like a ricer and has a low pitch rumble, quiet wile at an idle and only hear it when at higher rpm
Michael Cantu
Reviewed in the United States on June 24, 2024
Had this installed and I am pleased with the results. Not super loud but does have a slight drone at around 2500 rpm. Has a nice deep growl on my ‘23 TRD OR. Would definitely recommend
Josh McDowell
Reviewed in the United States on October 22, 2024
Installed on my ‘20 Sierra and it woke the 6.2L up! Very reactive, yet has a good low end without being too obnoxious. Love it.
JB6484
Reviewed in the United States on April 2, 2024
I put these on 5.7 2019 Charger. I have a resonator delete, still have the stock cats on and two Pro XS mufflers. These mufflers are not loud, they are maybe a touch louder than stock, however the tone is superb and that’s what I was going for. These sound great when putting the power down. No drone, in the car you can’t hear what they sound like, I had to film myself and do a couple drive byes to hear what they sounded like. Just a great sounding muffler for people who don’t want to piss off the neighbors or make the ride in the cabin uncomfortable.
Yeddie
Reviewed in Canada on January 22, 2023
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E. Scholz
Reviewed in the United States on July 23, 2022
On my 1992 Miata, the exhaust setup is: Flyin' Miata high flow cat -> Vibrant Ultra Quiet resonator -> Borla Pro XS. The Borla reduces the annoying boomy low tones much better than the Megan Racing resonator and muffler (2 components) it replaced. It also lets through more of a throaty tone that's satisfying to hear but not raspy, likely helped by the Vibrant resonator further upstream. Can't speak to this muffler's longevity yet as it's only been on for about 500 miles, but it seems well-made enough and I'm optimistic. The Borla's metal was very easy to weld to the rest of my stainless steel exhaust.
Horvath I.
Reviewed in the United Arab Emirates on June 7, 2022
I changed a horrific cherry bomb muffler into this BORLA.The droning sound inside was unbearable.Now with Borla,it is better!Still good deep sound,and perhaps a bit better acceleration.If the droning sounds very bad /loud,pls take a look at Helmholz pipe or j-pipe.Big help,for little money! UPDATE.. 1year and it is gone.Need to change.!Droning is a killer inside the cabin.
Fredy
Reviewed in Mexico on May 6, 2022
Yo originalmente iba por un Magnaflow y al final me decidí por este y no me arrepiento al pisar el acelerador se escucha pero es un sonido agradable muy recomendable.
Damian
Reviewed in Mexico on February 16, 2021
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Aniket B.
Reviewed in India on August 19, 2018
Very nice Product . LOVE the quality of product . Thank you Amazon ❤️🚘
Ted Monti
Reviewed in the United States on May 20, 2015
Fast shipping, it arrived on time, great item, well built, I install it on a 1995 Chevrolet Tahoe , 2dr, 5.7,with JBA ceramic headers , a 12" , 2.5" x pipe , the sound is awesome, is quiet at normal RPM , but it rumbles at acceleration and speed. It 's not as loud as the flomasters and other brands. The sound of Borla's is unique, this is my 3rd Borla, the other Borla is the S type, which is much louder and is install on a 2003 Mustang Mach 1, is music to those that like to hear the nice sound of a racing car, it rumbles and growls like a beast. The 3rd is the Turbo, witch is much quitter than the other two. All 3 would give you better acceleration, fuel economy, more throttle response and the sound is one of a kind.
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