Flowmaster Mufflers Super 40

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Center Inlet / Center Outlet
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Center Inlet / Dual Outlet
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Center Inlet / Offset Outlet
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Offset Inlet / Center Outlet
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Offset Inlet / Dual Outlet
Ships between 02/13/2012 - 02/15/2012

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Offset Inlet / Opposite Side Offset Outlet
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Offset Inlet / Same Side Offset Outlet
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Dual Inlet / Dual Outlet
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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.
Reviews (75)
Questions & Answers (0)

Flowmaster Mufflers Super 40 Customer Reviews

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75 Customer Reviews

5 Star review rating 57
4 Star review rating 16
3 Star review rating 0
2 Star review rating 2
1 Star review rating 0
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Dual in/out on 2011 GMC crew Z71
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Reviewed by Blake F (Stuttgart, AR) 2011 GMC Sierra — Jan 30, 2012 5:22 AM
I have always installed flowmasters on all my vehicles. They sound great and I always get alot of compliments and questions. Great product.
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super 40
1 of 1 people found the following review helpful.
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Reviewed by corey w (Hartford, WI) 2007 Chevy C/K 1500 — Jan 12, 2012 4:27 AM
put the super 40 flowmaster si-so on and boy does my 5.3 2011 silverado make sum noise now. Sounds very tough now!love the sound
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flow 40 06 Charger RT
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Reviewed by Evan L (Taunton, MA) — Jan 09, 2012 8:09 PM
bada$$ low rumble. twin 40s, love rm
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2003 chevy tahoe
1 of 1 people found the following review helpful.
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Reviewed by ronie k (sterling hts, MI) 2003 Chevy Tahoe — Dec 28, 2011 10:57 PM
i got this exhaust for my tahoe and is sounds great very loud but not loud to get you a ticket which is good
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Exactly as advertised
0 of 0 people found the following review helpful.
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Reviewed by Curt H (Topeka, KS) — Oct 06, 2011 5:11 AM
Great price and acceptable delivery time. Will use again!
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Great
0 of 1 people found the following review helpful.
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Reviewed by Cole R V (Matthews, NC) 2001 Jeep Cherokee — Sep 21, 2011 4:23 AM
Gives a great sound. Love it.
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Perfect
2 of 2 people found the following review helpful.
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Reviewed by Eric S (Saginaw, MI) 2007 Chevy Impala — Mar 11, 2011 9:08 PM
Put a pair of flowmaster super 40s on my 07 impala ss and they were exactly what I was looking for. Nice deep throaty sound outside but tame inside. Sounds good with the windows down or when you get on the throttle but sound isn't overpowering inside the car
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sounds great
2 of 2 people found the following review helpful.
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Reviewed by George D (Colonial Heights, VA) 1989 Jeep Wrangler — Feb 04, 2011 9:01 AM
i have nothing bad to say the super 40 sounds great and its not loud inside my truck
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Super 40
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Reviewed by Caleb B (Cashmere, WA) 1977 Chevy C/K 1500 — Jan 14, 2011 9:55 AM
The flowmaster muffler showed up a day early, that was nice. It came with everything(paperwork,good directions). The muffler sounds great and was just what I expected. Thanks Caleb
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No pickup should go without this muffler
6 of 7 people found the following review helpful.
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Reviewed by Nick R (Valley Cottage, NY) 2010 Chevy Silverado — Nov 08, 2010 10:29 PM
Went with the single in dual out on my 2010 Silverado 5.3 and 3" Flowmaster tips and this thing rumbles! Very deep powerful tone. My truck is 100% stock and this makes all the difference. Interior sound is very throaty and powerful but not loud. Can easily be blocked out with music or even opening the windows a bit will drown out some sound. If someone inside the car is talking it will be louder than the exhaust, don't worry. From the outside it's very aggressive. May not be as loud as some would like. If you're looking for anything louder go for Cherrybombs or a cutout. Other than that this thing rumbles! On my 2010 Silverado 5.3 it sounds good even at high revs in neutral. Doesn't pop or crack. Very solid sound.
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