Flowmaster Mufflers Super 40

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Super 40 Muffler
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Features

  • The Flowmaster Super 40 Muffler bellows the deepest tone available for high-horsepower street cars
  • Quality Flowmaster muffler crafting uses aluminized steel for corrosion resistance and precise mig welds for maximum durability
  • The Flowmaster Super 40 Muffler keeps the tone outside with advanced Gen II Delta Flow chamber deflector technology
  • Original two-chamber design maximizes horsepower and torque
  • The Super 40 Muffler boasts the smooth look of Flowmaster's original black case
  • Casing embossed with the Flowmaster name
  • Your Flowmaster Super 40 Muffler carries a 3-year warranty

Description

When sound and power matter most for your high-horsepower ride, pick the muffler that built Flowmaster’s legendary reputation and unique tone. The Flowmaster Super 40 Muffler runs deeper and more powerful than any other street muffler out there—even Flowmaster’s famed American Thunder 40 Series.

What’s even more amazing about the Super 40 is the balance of deep Flowmaster tone and reduced interior resonance. Thanks to exclusive Gen II Delta Flow technology, the Flowmaster Super 40 Muffler employs precision deflectors in the 2-chamber design that keep powerful sound mostly outside.

Also ideal for dual exhaust cruisers, the Flowmaster Super 40 Muffler boasts the quality construction you’d expect from Flowmaster. Each Flowmaster Muffler is built with 16-gauge aluminized steel for corrosion resistance and fully mig-welded for maximum durability. Best yet, your Flowmaster Super 40 Muffler comes with their original black case and boasts a 3-year warranty.

Notes

  • Flowmaster Super 40 Mufflers come in a variety of inlet/outlet configurations and sizes, shown above. Select the inlet/outlet diameter you need from the drop down at right.

Average Customer Rating

  (52)
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great sound and value

Posted on 09/29/2007 by Brandon S. - 2000 Ford Mustang (Marquette,MI)

"this is the second flowmaster super 40 I have owed and i would not own anything else makes a v6 sound like a v8 great for zr2's or v6 mustangs"

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About Brandon S.
Vehicle
2000 Ford Mustang
I use my vehicle for
friends vehicle
 
Flows are the sh*t

Posted on 09/22/2007 by Doug D. - 1998 Ford F150 (Slidell,LA)

1 of 1 people found the following review helpful.

"I like my super 40,but it's not as agressive as I thought it would be.Not much more than the regular 40."

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About Doug D.
Vehicle
1998 Ford F150
I use my vehicle for
commuting
 
Super on Jeep 4.0

Posted on 09/20/2007 by Harrison H. - 1997 Jeep Cherokee (Sodus,NY)

1 of 1 people found the following review helpful.

"I really like the way this muffler sounds on the 4.0. It is very deep and aggressive. It has a nice throaty sound on acceleration and a nice gurgle at idle. It is loud though. It quiets down at cruising speeds, but is loud the rest of the time. I've heard louder, but this is relatively loud compared to a Flowmaster 50."

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About Harrison H.
Vehicle
1997 Jeep Cherokee
I use my vehicle for
Daily Driving, Occasional Offroading
 
Simply Amazing

Posted on 09/01/2007 by Justin H. (Montague,NJ)

1 of 1 people found the following review helpful.

"This beast is insane, This sound is just right and the power gains I have felt from this is incredible. If your considering this Muffler you better get it. You will not not be disappointed."

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About Justin H.
 
FLOWMASTERS

Posted on 08/03/2007 by Jeffery C. (Whitmore Lake,MI)

1 of 1 people found the following review helpful.

"THANKS FOR THE EASE OF PURCHASE.I ABSOLUTELY LOVE THEM,MY '72 MONTE IS NOW COMPLETE,IT SOUNDS AWESOME....MANY THANKS...JEFF"

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About Jeffery C.
 
super duper 40 series

Posted on 08/02/2007 by Ryan R. (Clare,MI)

1 of 1 people found the following review helpful.

"this muffler sounds awsmome on my 66 cadillac, nice rumble at an idle, music to my ears during smokey old tire burnouts."

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About Ryan R.
 
Great Product

Posted on 06/11/2007 by Brian S. (Kalamazoo,MI)

"This has a deep tone but not to obnoxious. Its just right on my 2004 Ford F-250."

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About Brian S.
 
great sound

Posted on 06/02/2007 by Jose R. (Bellevue,NE)

"This muffler sounds great on my ford truck. just enough sound to let people know i am coming but not overpowering."

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About Jose R.
 
the super flow

Posted on 04/20/2007 by Tim P. (Pickens,SC)

1 of 1 people found the following review helpful.

"this muffler sounds great autoanything had the best price a super fast shipping"

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About Tim P.
 
97 Mustang GT

Posted on 04/16/2007 by Ryan R. (Carrollton,VA)

"I am very pleased with the sound now that it is broken in, at first I was a little upset with the sound (was too quiet for me) but after driving for a few weeks the sound is great!. not a direct fit cost me 200$ to install, but worth the savings from autoanything"

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About Ryan R.
 
Rumble

Posted on 04/03/2007 by Theresa S. (Campbellsport,WI)

1 of 1 people found the following review helpful.

"I happen to have a older truck inwhich I like the sound of the muscle car without spending the money."

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About Theresa S.
 
Awesome

Posted on 03/26/2007 by Mike Z. (Pittsfield,MA)

1 of 1 people found the following review helpful.

"Love It Sounds BADASS."

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About Mike Z.
 
Super sound from your super 40 !!!

Posted on 03/19/2007 by Nicholas S. (Loma Linda,CA)

1 of 1 people found the following review helpful.

"I've had mine installed on a 89 Jeep Cherokee. With the 4.0L inline six this muffler gives great sound and low interior noise. That being the major choice for this muffler. Even when the auto trans kicks into overdrive and you plant your foot in it it just howls! You can't beat it for the price, the best deal to be found, no muffler shop would come close !!!"

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About Nicholas S.
 
00 Jeep Grand Cherokee 3

Posted on 03/01/2007 by Aaron K. (Enterprise,AL)

1 of 1 people found the following review helpful.

"Own a 2000 Jeep grand cherokee 4.7L v8, with full three inch exhuast from the Y-pipe back, high flow cat and previously a Flowmaster 70. I was looking for something louder than the 70 but not annoyingly loud. The 40 has a very nice deep sound yet isn't a drumming noise on the inside of the vehicle when travelling on the highway. Aggressive and deep sound when you want it to be, yet mellow enough to not drive you and your passengers crazy. Excellent muffler."

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About Aaron K.
 
04 2500HD

Posted on 02/26/2007 by Gary H. (Spokane,WA)

1 of 1 people found the following review helpful.

"Great product!!! I true dualed, and X-piped it. Sounds great throughout the powerbands, and has better accelleration. Gas mileage is about the same. Tone is right where I want it (LOUD). Gotta go flowmaster."

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About Gary H.
 
cadillac deville de elegance 1997

Posted on 01/30/2007 by Adam S. (Annandale,VA)

1 of 1 people found the following review helpful.

"LOUD!! SOUNDS LIKE A SEMI TRUCK AND I FEEL THE POWER IT GAINED WITH THAT 3 INCH INLET - ADAM FC VA"

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About Adam S.
 
Repeat Offender

Posted on 01/03/2007 by Michael L. (Ogdensburg,NY)

1 of 1 people found the following review helpful.

"I have had flowmasters on my previous Chevy Silverado and now on my GMC Sierra. The sound and performance is great! There are many other choices, but I am sold on Flowmaster from past experience."

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About Michael L.
 
Super 40-NICE!

Posted on 11/04/2006 by Scott M K. (Pewaukee,WI)

1 of 1 people found the following review helpful.

"Installed on 05 Roush Mustang GT w/ auto and I am very happy with the sound! Aggressive but not ridiculous-highly recommend for 05+ GT's. Excellent service-will definitely buy from AutoAnything again!"

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About Scott M K.
 
wow

Posted on 10/31/2006 by Chris S. (West View,PA)

0 of 1 people found the following review helpful.

"love the sounds just wish my focus had a better way to hang this muffler it rattles a little but still great sound"

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About Chris S.
 
flowmaster on 72 ford w/ 400 v8

Posted on 08/22/2006 by Ofelia E. (National City,CA)

1 of 1 people found the following review helpful.

"i bought 2 super 40's and they were great i installed them with 3 in. piping they sound great real great and they gave me some real performance i felt it right away i recomend this for all the muscle cars and trucks"

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About Ofelia E.
 
Good Bang For The Buck

Posted on 07/25/2006 by Diego G. (El Paso,TX)

1 of 1 people found the following review helpful.

"AAfter having had the 50 suv series with 3' piping on my Jeep WJ..I decided it was time to go louder and I did exactly that.. The Super 40 at first wasn't much louder, but let it burn in and you can really hear it bring your car to life..Loud enough for anyone to get noticed.. Really liked it"

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About Diego G.
 
Great

Posted on 07/10/2006 by Keegan S. (Beech Grove,IN)

"It was shipped to me fast. I welded it up in about an hour and it sounds great. I love it the low rumbly in idel and the loud roar when u give it some gas."

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About Keegan S.
 
Awesome

Posted on 05/16/2006 by Darl B. (Havre De Grace,MD)

1 of 1 people found the following review helpful.

"i got the sound i was looking for and with the price i would definitely recommend this muffler"

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About Darl B.
 
Nice!!!!!!!!!!!

Posted on 02/17/2006 by William H. (Leesburg,VA)

2 of 2 people found the following review helpful.

"I puchased the muffler a couple of weeks ago and after the installation, what a difference. The sound is awesome. the lack of back pressure has given me alittle better performance, especially off the line. My 05 Ford f_150 FX4 now with this muffler and sound is the complete package. The compliments just keep coming from everyone that sees & hears my truck. Thanks for the upgrade to my happiness. Will purchase again, if needed."

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About William H.
 
superior

Posted on 12/02/2005 by Matthew F. (Hazleton,PA)

1 of 1 people found the following review helpful.

"Sounds incredible on my '02 Tahoe. Mild interior noise, very aggressive exterior tone. Love it. Thanks"

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About Matthew F.
Showing 26 - 50 of 52 Customer Reviews
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