Win This Supercharged 2015 Mustang Enter Here
1-888-332-7930 M-F 9-9,Sat 9-5:30,Sun 12-4 ET

Free Shipping on Everything. Seriously. Details

Flowmaster Super Flow 44 Series Offset Muffler - 2.5 in. (79-04 All, Excludes 99-04 Cobra)

99 Reviews
Our Price

$83.90

(each)
  • Item #18400
  • MPN# 942548

  • Market Price $93.99
  • You Save 11% ($10.09)
In Stock Ships same business day.
Free Shipping on Everything
Product Videos Customer Photos
Features
  • Signature Flowmaster Sound
  • Two Chamber "Gen II" Delta Flow Technology
  • Offset inlet and outlet design
  • 2.5" inlet/outlet diameter
  • Aluminized Steel Construction
  • Sold Individually
Description
That Flowmaster Sound. Improve your Mustangs exhaust flow for an increase in horsepower and a deeper throatier exhaust note with a set of Flowmaster Super Flow 44 Series Mufflers for a truly classic muscle car sound.

Superior Design. The Flowmaster Super 44 Mufflers are MIG welded from durable 16 gauge aluminized steel for durability and value. The 44 series mufflers use Flowmasters patented two chamber "Gen II" Delta Flow design to increase power and sound. And each muffler is embossed with the "Flowmaster" name so you know it is the real article.

Application. The Super 44 Muffler's outer case measures 4" x 9.75" x 13", and features a 2.5" diameter inlet and outlet in an offset configuration. This is the perfect muffler for the 1979 to 2004 Mustangs. Excludes 1999-2004 SVT Cobra.

Mustang Fitment: 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 Details

What's in the Box
  • (1) Muffler
Installation Info
Tech Specs
40 Series Delta Flow versus 40 Series Original versus Super Flow 44 Series
  • Minimizes interior resonance
  • Aggressive exterior tone
  • Two Chambered Muffler
  • Made of Aluminized Steel
  • No minimization of interior resonance
  • Aggressive tone inside and out
  • Two Chambered Muffler
  • Made of Aluminized Steel
  • Delta Flow technology minimizes interior resonance
  • Aggressive deep powerful tone
  • Two Chambered Muffler
  • Made of Black Aluminized Steel
Will it fit my Mustang?
  • Bullitt - 01
  • Foxbody - 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93
  • Mach 1 - 03, 04
  • V6 - 94, 95, 96, 97, 98, 99, 00, 01, 02, 03, 04
  • Cobra - 94, 95, 96, 97, 98
  • GT - 94, 95, 96, 97, 98, 99, 00, 01, 02, 03, 04

Most Helpful Reviews Read All Reviews

Overall Rating 4.8/5 Write a Review
5/5
Radical!

Awesome muffler that adds great sound & power. If your 'stang is bone-stock like mine was then this is the perfect item to start with to give it the muscle it deserves.

Helpful (16) (1)

5/5
single v6 muffler

ok i installed this super 44 muffler along with a bbk cai and the sound is instant. at about 2k is when it gets more agressive and for a single exhaust this is the cheapest and best sound. overall a great

Read More
Helpful (23) (4)

Videos

Customer Photos (15) View All Customer Photos

You Might Also Like

Q & A (9 Questions, 9 Answers) Ask a Question

Does the "inlet"have to face towards the engine? Had a friend weld in my mufflers, he said it doesn't matter which end goes where. Tried telling him to put the inlets of the mufflers facing foward....he did one correctly and one incorrectly. He's convinced he did everything right.

Scotty16 Year: 2001 Model: GT

Question Resolved
Good Question (0) (0)
  • Yes, the inlet on the muffle attaches to the exhaust pipe coming from the engine. There is a reason why the manufacture specifies inlet and outlet.

    Helpful (0) (0)

    Burzum10 Year: 1996 Model: V6

Show 1 more answer

is the 2.5 inch diameter correct? I see on here it says this muffler has a 2.5 inch diameter but on other sites i found this muffler on it says they have a 2.25 inch diameter and both websites say its compatable with my 1998 mustang and i was wondering if this would actually work on my car.

allsam8 Year: 1998 Model: GT

Question Resolved
Good Question (0) (0)
  • Per Flowmaster specs, these mufflers have a 2.5" inlet and outlet. These will fit your 1998 without any problems. Check out some of the product reviews; there are a couple from customers who installed these Super 44s on their '98 and they were very happy with the sound and fit. Hope this helps!

    Helpful (0) (0)

    LisaS Year: 1992 Model: GT

Show 1 more answer

What do i have to do to install this? do i need to go to a shop, or can i do it all in my garage w/ a few jacks. All my exhaust is completly stock, will i need anything else as well?

03AndrewP Year: 2003 Model: V6

Question Resolved
Good Question (0) (0)
  • Your best bet would be take them to a shop, because they require welding. and plus it is just a lot easier and way less of a hastle. I spent $50 getting mine installed.

    Helpful (1) (0)

    Best Answer

    Hewitt Year: 2000 Model: GT

Show 4 more answers

Reviews (99) Write a Review

  • 5 Stars .86 86%
  • 4 Stars .10 10%
  • 3 Stars .04 4%
  • 2 Stars 0 0%
  • 1 Stars 0 0%
4.8

out of 5 stars

96 Customers Recommend this Product

Installation Time:Full Day

Installation Cost:$100-$250

  • Loudness / Volume: 4.386364 4.4/5
  • Exhaust Note: 4.837209 4.8/5
  • Fit & Finish: 4.704545 4.7/5
  • Bang For Your Buck: 4.659091 4.7/5
Filter By Sort By
  • 5/5 Yes, I recommend this product

    July 23, 2010

    single v6 muffler

    ok i installed this super 44 muffler along with a bbk cai and the sound is instant. at about 2k is when it gets more agressive and for a single exhaust this is the cheapest and best sound. overall a great product and would reccomend it.

    nathan

    Helpful (23) (4)

  • 5/5 Yes, I recommend this product

    May 22, 2010

    Radical!

    Awesome muffler that adds great sound & power. If your 'stang is bone-stock like mine was then this is the perfect item to start with to give it the muscle it deserves.

    Bryan Carduff

    Helpful (16) (1)

  • 5/5 Yes, I recommend this product

    November 30, 2010

    Amazing sound

    I put these along with a jegs off road h pipe and a CAI on my 97GT and it sounds so awesome. Loud and quality. It may be a little biased, but I think I have the meanest sounding mustang around. Everytime I start it up I just smile.

    John

    Year: 1997 Model: GT Driving Style: Daily Driver

    Helpful (14) (1)

  • 5/5 Yes, I recommend this product

    August 16, 2009

    perfect rumble

    These sound great! Nice and loud through the first 3 gears then they quite down around 4rth and 5th gear for highway cruising. Also have an awesome rumble at idle!

    Trevor

    Helpful (18) (3)

  • 5/5 Yes, I recommend this product

    May 29, 2010

    excellent!!

    always thought flowmasters were quiet. but no way i get compliments all the time. recommend these big time and an o/r h pipe really sets them off!!

    Jeremy Eckert

    Helpful (12) (1)

  • 5/5 Yes, I recommend this product

    October 19, 2010

    Recommended for any Mustang GT or V6

    Took these mufflers to my local exhaust shop and had them put these on with an h-pipe. I'm not going to say that it made my v6 sound like a Gt but it's pretty dang close. I'm very impressed with the sound and quality of the product. If you want the muscle sound your mustang deserves definitely pick the mufflers up.

    Chase

    Driving Style: Daily Driver

    Helpful (10) (1)

  • 5/5 Yes, I recommend this product

    September 22, 2010

    Great!

    I bought these mufflers for my '04 Gt. I was almost dissepointed right after the install because they just didn't sound to good.. but I knew they needed to be broken in. over the course of about 3 weeks(420 miles), they finally broke in. Now they sound absolutely AMAZING! Thanks AM!

    Caleb

    Year: 2004 Model: GT Driving Style: Daily Driver

    Helpful (17) (5)

  • 5/5 Yes, I recommend this product

    August 02, 2010

    mrflowmaster

    theres nothing like the sound of a flowmaster and thease 44s r the best ive found yet. when i first put them on i thaught there they soundedd great but but just not quite enugh ring to them i drove it for about a week and a half and one day they finly broke in and woke up the sound was then perfict i still go out on a random drive just to hear the sound. and my bassani o/rX realy helps as well. american mucle is the greatest place posible to buy aftermarket mustang parts love it.

    eric

    Helpful (10) (2)

  • 5/5 Yes, I recommend this product

    June 25, 2010

    '04 Mustang with Set of 44's

    I had a chance to get a pair of these installed on my Mustang and they sound great. I especially love the sound at around 2K RPM's just like Noel said. Sounds very aggressive and the price was right with these mufflers. I also have a JLT Cold Air Intake which adds a little more cackle to the exhaust when you let off which makes it that much more enjoyable to drive.

    Luke

    Year: 2004

    Helpful (9) (2)

  • 5/5 Yes, I recommend this product

    June 13, 2010

    signature FM rumble

    these mufflers are really great! I got them welded on by a local muffler shop, because I don't have a welder. The difference is instantly noticeable. Like others have said, around 2K RPM's is where you hear the best aggressive sound. At idle a deep rumble. I highly recommend these 44's to anyone wanting to improve the sound of their GT.

    noel r.

    Helpful (9) (2)

More Products You Might Like

Related Categories