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BBK Varitune Muffler - Stainless Steel 2.75 in. (79-04 All, Excludes 99-04 Cobra)

1 Reviews
Our Price

$129.99

(each)
  • Item #56245
  • MPN# 31025

  • Market Price $149.49
  • You Save 13% ($19.50)
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Product Videos
Features
  • BBK Varitune Muffler with "Adjustable Power Valve"
  • Change from a Three to One Chamber Exhaust for More Power and Sound
  • 8-10 Decibel Range Difference
  • Offset Inlet and Outlet Design
  • 2.75" Inlet/Outlet Diameter
  • Stainless Steel Construction
  • Sold Individually
Description
Adjustable Sound. BBK's patented tunable Varitune performance mufflers allow you to change from a mellow three chamber exhaust sound to a rich throaty straight-through exhaust note with just a twist of a wrench, for a 8 to 10 decibel sound level difference!

How It Works. BBK Varitune performance mufflers utilize an internal "Adjustable Power Valve." When in the closed position the valve blocks the exhaust flow, forcing it through all three chambers of the muffler for a classic mellow sound. When in the open position, the valve "uncorks" the exhaust flow, allowing it to take the path of least resistance, acting more like a straight-through muffler for a rich throaty exhaust note. This unique design is perfect for personalizing the power and sound levels of your Mustang to suit your own specific needs.

Stainless Steel Construction. Manufactured using the highest quality heavy gauge Stainless Steel available, BBK Performance utilizes both robotic and hand welding to ensure the quality and durability of each of their mufflers.

Application. This BBK Varitune Muffler features a 2.75" inlet and outlet diameter in an offset configuration making it the perfect muffler for 1979 to 2004 Mustangs, including the LX, V6, GT, Bullitt, Mach 1 and 1994-1998 SVT Cobra models. Excludes 1999-2004 SVT Cobras with IRS.

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
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

Review & Install Video

Hey I’m Justin with AmericanMuscle.com and this is my brief breakdown of BBK’s Varitune muffler available for all later generation Mustangs. The Vari-tune is a fully tunable muffler allowing the owner to change his or her tone in a matter of minutes simply by adjusting the power valve here on the muffler itself. By opening and closing the valve you are essentially changing from a 3 chambered muffler and a single chambered muffler. This allows you to go from a relatively quiet exhaust setup to a loud, aggressive setup in a matter of minutes using nothing more than a simple wrench to adjust the power valve. To see how everything works BBK was nice enough to send a sample that has been cut-up to expose the inner workings of the muffler itself. As you can see with the power valve fully closed like it is now, the exhaust has to travel through all 3 chambers which is going to keep the sounds levels down considerably. However, as soon as you open up that power valve all the way, you’re essentially bypassing these first two chambers and it’s at that point the exhaust becomes much louder and you might pick up a few horsepower at the rear wheels thanks to the increased flow. If you’re not watching this vehicle currently on our site and you want to hear some sound clips of this muffler in action, just click on the link to do so. BBK does offer the exhaust in both aluminized steel and full-stainless, with a slight difference in price between the two. The exhaust does come with these 4” polished tips standard, but there are optional 4” black tip available just in case you wanted to switch up the look a little bit. If you have any questions about going with a Varitune setup for your ride, just get in touch with one of our Mustang experts, you can give them a call at 855 422 7439 or drop them an email at support@americanmuscle.com. As always you can find the Varitune and other great products from BBK right here at AmericanMuscle.com, and if you want to see my overviews on these products in addition to other great products for your ride, just subscribe to our YouTube channel by clicking the link below or up in the corner.

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Customer Reviews (1) Write a Review

Overall Rating 4.0

out of 5 stars

Installation Time:Shop Install

Installation Cost:0-$100

  • Loudness / Volume 5 5
  • Exhaust Note 4 4
  • Fit & Finish 4 4
  • Bang For Your Buck 5 5



  • 4/5

    Installation Time: Shop Install

    Installation Cost: 0-$100

    May 31, 2016

    Great alternative to electric style mufflers

    My cobra had these on it even though it says they don't fit on there. They are a great alternative to the electric style variable mufflers and cost almost half as much as some of the others do. One of them got damaged by something hitting the underside of the car but if I could o would buy myself a new pair.

    909VENM

    Year: 2004 Model: Cobra Driving Style: Street / Strip 'Stangs I have owned: 2

    Helpful (0) (0)

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