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Gibson MWA Superflow Offset/Offset Oval Muffler - Stainless 2.5 in. (79-04 All, Excluding 99-04 Cobra)

AmericanMuscle no longer carries the Gibson MWA Superflow Offset/Offset Oval Muffler - Stainless 2.5 in. (79-04 All, Excluding 99-04 Cobra). Please check out 1999-2004 Mustang Mufflers for an updated selection.
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AmericanMuscle no longer carries the Gibson MWA Superflow Offset/Offset Oval Muffler - Stainless 2.5 in. (79-04 All, Excluding 99-04 Cobra). Please check out 1999-2004 Mustang Mufflers for an updated selection.

Features & Details

  • MWA Series - Aggressive Sound
  • No Internal Packing or Baffles
  • 2.5" Inlet/Outlet Diameter
  • Offset Inlet, Offset Outlet
  • Oval, Stainless Steel Construction
  • Straight-Through Design
  • Size: 4” x 9” x 14”
  • Made in the USA
  • Sold Individually
  • Universal Fitment
Sound. Designed and tested on stock vehicles to meet legal sound limits for all 50 states. Engineered to provide a civilized tone; this will be moderately louder than stock, but with a rich throaty tone that is pleasing to the ear. Each Gibson system is quieter in the cab than any other competitor brand. You get big-block sound at the tailpipe where it belongs. No annoying sounds, vibrations, hiss or rumble.

Impressive Acoustics, Easy Installation. With a 2.5" offset inlet and 2.5" offset outlet, this MWA Superflow Muffler produces a notable audible increase over stock mufflers, yet minimizes drone and sound transfer to the vehicle cabin. Designed to comply with sound and emission regulations, this muffler is safe to install without worrying about the boys and girls in blue.

Warranty. Gibson provides a Limited Lifetime Warranty for this MWA Muffler.

Application. This Gibson 2.5 in. Stainless MWA Superflow Offset/Offset Oval Muffler is designed for any 1979-2004 Mustang, excluding 1999-2004 Cobras, equipped with a 2.5" inlet and outlet. Sold individually.

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
Will it fit my Mustang?
  • Foxbody - 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93
  • GT - 94, 95, 96, 97, 98, 99, 00, 01, 02, 03, 04
  • V6 - 94, 95, 96, 97, 98, 99, 00, 01, 02, 03, 04
  • Bullitt - 01
  • Cobra - 94, 95, 96, 97, 98, 93
  • Mach 1 - 03, 04

Requires 2.5" Inlet; Not Compatible with IRS Cobra

Most Helpful Reviews

5/5
Gibson mufflers

Sounds excellent ,deep not to loud for the daily driver.

Helpful (1)

5/5
Great Rumble

Mufflers sounds great. sounds beautiful and gives an amazing pur. Would recommend to anyone who is going after a aggressive sound

Helpful (1)

Overall Rating 4.7 out of 5 stars
Read All 3 Reviews

Customer Photos

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1 Questions / 1 Answers

Ask a Question

HI. Are these mufflers louder or quieter than Flowmaster super 44s. I am after a louder idle the most aggressive you can get.

mustanggtsteve

  • The Gibson MWA Superflow Offset/Offset Oval Muffler will be louder than the Flowmaster Super 44's.

    Rob D

Helpful (0)

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Customer Reviews (3) Write a Review

Overall Rating 4.7

out of 5 stars

Installation Time:Afternoon

  • Loudness / Volume 4.333333 4.3
  • Exhaust Note 4.666667 4.7
  • Fit & Finish 4.666667 4.7
  • Bang For Your Buck 4.333333 4.3



  • 5/5

    February 23, 2017

    Gibson mufflers

    Sounds excellent ,deep not to loud for the daily driver.

    TerenceB

    Year: 2004 Submodel: GT

    Helpful (1)

  • 5/5

    Installation Time: Less than 1 Hour

    January 09, 2017

    Great Rumble

    Mufflers sounds great. sounds beautiful and gives an amazing pur. Would recommend to anyone who is going after a aggressive sound

    RedFire04

    Year: 2004 Submodel: V6

    Helpful (1)

  • 4/5

    Installation Time: Afternoon

    March 29, 2017

    aggressive without drone

    Put these on my KenneBelle blown 86 hatch - wanted to try something different than the MagnaFlows I had on it. When I first cranked it up, I thought uh oh - its gonna be loud ........at idle it almost sounds like it has no mufflers - but as soon as you get moving they really do get quiet - even quieter than the MagnaFlows at cruise, yet when you really rap it they definitely sound mean.

    slomofo

    Year: 1986 Submodel: Other

    Helpful (0)

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