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Flowmaster Super Flow 44 Series Inline Muffler - 2.5 in. (99-04 Cobra)

Market Price $97.65 You Save 12% ($11.24)

$86.41 (each)

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  • Item 18450
  • MPN# 942549

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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
  • Fits 1999-2004 SVT Cobra
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.

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

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

Most Helpful Reviews

5/5
got more power

love these mufflers great sound not too loud got more power

Helpful (1)

5/5
Awesome sound. Awesome product!

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

Helpful (1)

Overall Rating 5 out of 5 stars
Read All 5 Reviews

Customer Photos

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2 Questions / 2 Answers

Ask a Question

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

Blackcobra2001

  • 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.

    Ricky36

    Good Answer (0) (0)

Question Resolved

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

FlowMasterv6

  • 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.

    Ricky36

    Good Answer (0) (0)

Question Resolved

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Customer Reviews (5) Write a Review

Overall Rating 5.0

out of 5 stars

Installation Time:Afternoon

Installation Cost:0-$100

  • Loudness / Volume 4.2 4.2
  • Exhaust Note 5 5
  • Fit & Finish 5 5
  • Bang For Your Buck 4.8 4.8



  • 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.

    gilly38

    Year: 1999 Submodel: Cobra north hollywood

    Helpful (1) (0)

  • 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.

    Sds8081

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

    Helpful (1) (0)

  • 5/5

    Installation Time: Afternoon

    December 20, 2013

    got more power

    love these mufflers great sound not too loud got more power

    JHILTON

    Year: 2001 Submodel: Cobra Vernon, BC, Canada

    Helpful (1) (0)

  • 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.

    JasonV

    Year: 2003 Submodel: Cobra Huntsville, AL

    Helpful (0) (1)

  • 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.

    Cobraz

    Year: 2003 Submodel: Cobra

    Helpful (0) (0)

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