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Flowmaster Super Flow 44 Series Offset/Same Side Out Oval Muffler - 2.5 in. (Universal Fitment)

Item 18450
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Market Price $96.99 You Save 12% ($12.04)
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$84.95 (each)

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Ship to: Ashburn - 20149
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    Features & Details

    • Signature Flowmaster Sound
    • Two Chamber "Gen II" Delta Flow Technology
    • Inline Inlet and Outlet Design
    • 2.5" Inlet/Outlet Diameter
    • Aluminized Steel Construction
    • Sold Individually
    • Universal Fitment; Modifications Will Be Required
    That Flowmaster Sound. Improve your Cobras 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.

    Modifications Required. This Muffler was designed to be used on mutliple applications, as it is not a direct fit replacement part. In order to install this Muffler properly on your vehicle, some modifications to the exhaust system will be required.

    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 inline configuration. This is the perfect muffler for the 1999 to 2004 SVT Cobra. Sold individually.

    Fitment: 1999 2001 2003 2004 Details

    MPN# 942549

    CA Residents: WARNING: Cancer and Reproductive Harm -

    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?
    • Cobra - 99, 01, 03, 04

      Customer Photos

        Questions & Answers (2)

        2 Top Rated Questions

        Hello, I own a 2001 V6 Base model Mustang and there is no videos how this sounds for a single exhaust only dual exhaust. I want a muffler that is not to loud nor quiet a nice deep sound when you rev it will give that mean exhaust sound any suggestions? with a video if thats possible thanks

        • The Flowmaster Super Flow 44 Series Inline Muffler - 2.5 in. (99-04 Cobra) will not fit a v6 mustang. This muffler is made for the cobra mustangs only. We do have however this muffler for the v6 mustang. The Flowmaster Super Flow 44 Series Offset Muffler - 2.5 in. (79-04 All, Excludes 99-04 Cobra) item number 18400, Typically we have feedback on this muffler of being a deeper tone and not to raspy and loud. The best way to here this exhaust would be going to local car shows or checking online.

        Helpful (0)

        Would this bolt on an existing slp loudmouth car back? Or does it need to be welded on.

        • As long as your SLP cat-back is a 2.5" inlet/outlet diameter tubing the Flowmaster Super Flow 44 Series Inline Muffler - 2.5 in. (99-04 Cobra) should bolt up to this cat-back.

        Helpful (0)
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          Customer Reviews (6) Write a Review

          Overall Rating 5

          out of 5 stars

          Installation Time:Afternoon

          Installation Cost:0-$100

          • Loudness / Volume 4.333333 4.3
          • Exhaust Note 5 5
          • Fit & Finish 5 5
          • Bang For Your Buck 4.833333 4.8

          • 5/5

            Installation Time: Afternoon

            May 29, 2018


            These mufflers paired with my BBK X-Pipe are so loud that my entire neighborhood hears me when I drive through... I love it! Overall super loud and with a great tone.


            Year: 2001 Submodel: Cobra

            Helpful (6)

          • 5/5

            Installation Time: Shop Install

            Installation Cost: 0-$100

            September 23, 2016

            Flowmaster super 44

            Sounds like American muscle and was easy to install. Perfect fit.


            Year: 2003 Submodel: Cobra

            Helpful (8)

          • 5/5

            Installation Time: Less than 1 Hour

            December 18, 2014

            A must for all mustangs

            Definite improvements all around. The stock mufflers on my 99 cobra bottle necked big time at the in/out lets. These new 44 mufflers allow more flow with a true muscle car sound and a noticeable increase in power.


            Year: 1999 Submodel: Cobra north hollywood

            Helpful (9)

          • 5/5

            Installation Time: Less than 1 Hour

            February 17, 2014

            Awesome sound. Awesome product!

            I installed this on my 01 SVT Cobra. It has that deep sound and sounds awesome.


            Year: 2001 Submodel: Cobra New Hyde Park, NY, USA

            Helpful (8)

          • 5/5

            Installation Time: Afternoon

            December 20, 2013

            got more power

            love these mufflers great sound not too loud got more power


            Year: 2001 Submodel: Cobra Vernon, BC, Canada

            Helpful (8)

          • 5/5

            Installation Time: Less than 1 Hour

            July 24, 2013

            Gave my Cobra a nice sound

            Had these mufflers welded into my stock 2003 cobra, and for just a muffler swap, it really gave the exhaust a nice tone. There is just no better sounding muffler for a mustang in my opinion than a Flowmaster. There's just something about that classic chambered sound that puts a smile on my face everytime I crank up my car.


            Year: 2003 Submodel: Cobra Huntsville, AL

            Helpful (7)

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