watch, listen & hear the H.A.R.M. sound!
INSTALLATIONS & CUSTOMERS CARS
25 or so clips of different cars running HARM Mufflers and exhaust systems.
All running our aluminum exhaust components and our Virus ...Vent or DeciKill core mufflers.
Check us out at http://www.harmmufflers.comShow More

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25 or so clips of different cars running HARM Mufflers and exhaust systems.
25 different idle clips with a few drag strip passes at the end. Cars ...
25 different idle clips with a few drag strip passes at the end. Cars ranging from mildly modified to heavily modified.
All running our aluminum exhaust components and our Virus ...Vent or DeciKill core mufflers.
Check us out at http://www.harmmufflers.comShow More
All running our aluminum exhaust components and our Virus ...Vent or DeciKill core mufflers.
Check us out at http://www.harmmufflers.comShow More

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HARM mufflers on a classic mustang - coyote swapped.
www.harmmufflers.com

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A solid upgrade and a big benefit on the INSTALLATION side of our builder kits.!
A solid upgrade and a big benefit on the INSTALLATION side of our ...
A solid upgrade and a big benefit on the INSTALLATION side of our builder kits!
Getting a perfect fit before you weld is absolutely necessary when TIG welding aluminum. This ...will be a way to significantly simplify and speed up one of the toughest aspects of installing the X pipe.Show More
Getting a perfect fit before you weld is absolutely necessary when TIG welding aluminum. This ...will be a way to significantly simplify and speed up one of the toughest aspects of installing the X pipe.Show More

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Kevin’s wicked coupe. 3.5” full aluminum exhaust.

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Something for our buddy Chris

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Virus Vent race mufflers vs Ti core - Drag & Drive mufflers
Smaller “Virus Vent” race mufflers vs large body (6” round) Ti Core - ...
Smaller “Virus Vent” race mufflers vs large body (6” round) Ti Core - Drag & Drive mufflers.

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#HARMmufflers Falcon at the 2024 NMRA FORD Nationals.
We ran our falcon in the 10.10 index "Street Bandit" class, and found ...
We ran our falcon in the 10.10 index "Street Bandit" class, and found our way to the winners circle.

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H PIPE, vs X PIPE, vs CHAMBER! Our aluminum midpipe dyno shootout.
We did a H pipe, vs X pipe, vs chamber Dyno test. We DO NOT do any ...
We did a H pipe, vs X pipe, vs chamber Dyno test.
We DO NOT do any “off-road” exhaust midpipes for any make of car. Everything we do is a ...universal style builder kit, you get all the pieces, you fit & weld it together.
All of these midpipe combinations were optimized for our 347” SBF, and as much as possible, all testing perimeters were held to the same standard.
Weather
Water temp
Air temp
Fueling
Timing
Etc
All repeated the same for each test to have as accurate data as possible.
Find us on Facebook at
Herfurth Aluminum Racing Mufflers
#harmmufflersShow More
We DO NOT do any “off-road” exhaust midpipes for any make of car. Everything we do is a ...universal style builder kit, you get all the pieces, you fit & weld it together.
All of these midpipe combinations were optimized for our 347” SBF, and as much as possible, all testing perimeters were held to the same standard.
Weather
Water temp
Air temp
Fueling
Timing
Etc
All repeated the same for each test to have as accurate data as possible.
Find us on Facebook at
Herfurth Aluminum Racing Mufflers
#harmmufflersShow More

Now Playing
HARM mufflers - aluminum exhaust sound clips COYOTE and Ford Modular engines
Some mixed sound clips with Ford Modular and Coyote engines
Some mixed sound clips with Ford Modular and Coyote engines

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HARM sound clips of Turbo Charged combinations
A turbo charged barra powered Fairmont, a turbo LS with single 4” ...
A turbo charged barra powered Fairmont, a turbo LS with single 4” exhaust, and a turbo Coyote.

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HARM muffler sound clips, on Naturally Aspirated, LS equipped cars and trucks
Random clips of cars and trucks running our Drag and Drive aluminum ...
Random clips of cars and trucks running our Drag and Drive aluminum mufflers and or original Virus Vent aluminum racing mufflers.
All LS powered and all motor.
All LS powered and all motor.

Now Playing
HARM Mufflers, sound clips on various pushrod Ford engines.
Various sound videos of our Ti core - Drag and drive mufflers as well ...
Various sound videos of our Ti core - Drag and drive mufflers as well as our original Virus Vent race mufflers.
Some 3” and 3.5” as well as with tailpipes and ...dumped.
Finds us on Facebook and instagram
Herfurth Aluminum Racing Mufflers.
#harmmufflersShow More
Some 3” and 3.5” as well as with tailpipes and ...dumped.
Finds us on Facebook and instagram
Herfurth Aluminum Racing Mufflers.
#harmmufflersShow More




































