Free Shipping On Orders Over $49. Details

Talk to a Mustang Expert
1-877-887-1105
Every day 8:30AM EST - 11:00PM EST
Win 1 of 3 Exhaust Kits! Enter Daily!

BBK Stainless Steel Varitune Offset/Offset Oval Muffler - 3 in. (Universal Fitment)

Market Price $159.99 You Save 13% ($20.00)
Starting At

$139.99 (each)

FREE Shipping

  • Item 56247
  • MPN# 31035

Local Install Shops

Quoted installation from $125

View 3 Shops

near 19355 (change)

Sorry, please enter a valid US or CA postal code
We're sorry, zip can't be updated at this time.

Will this fit your Vehicle?

In Stock Ships same business day.
Ship to: Ashburn - 20149
Sorry, please enter a valid US or CA postal code
We're sorry, zip can't be updated at this time.
    Create a list
    Add to New List

    Saved - View your saved items

    We're sorry. We couldn't save this product at this time.

    Features, Video & Details

    • 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
    • 3" Inlet/Outlet Diameter
    • Stainless Steel Construction
    • Sold Individually
    • Universal Fitment; Modifications Will Be Required

    Review & Installation Video

    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.

    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.

    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. This BBK Varitune Muffler features a 3" 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

    CA Residents: Warning: California's Proposition 65

    What's in the Box
    • (1) Muffler
    Installation Info
    Tech Specs
    Will it fit my Mustang?
    • Bullitt - 01
    • Cobra - 93, 94, 95, 96, 97, 98
    • Cobra R - 95
    • GT - 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 00, 01, 02, 03, 04
    • LX - 87, 88, 89, 90, 91, 92, 93
    • Mach 1 - 03, 04
    • Other - 79, 80, 81, 82, 83, 84, 85, 86
    • V6 - 94, 95, 96, 97, 98, 99, 00, 01, 02, 03, 04

    You Might Also Like

    Customer Photos

    Q & A

    No questions about this product yet.

    Ask the First Question

    Customer Reviews (3) Write a Review

    Overall Rating 4.7

    out of 5 stars

    Installation Time:Afternoon

    Installation Cost:0-$100

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



    • 4/5

      Installation Time: Shop Install

      Installation Cost: 0-$100

      March 22, 2016

      Liking it

      It's unbelievable types of sound when you change it from normal to loud. I do recommend it to everyone.....

      Danzkie

      Year: 1998

      Helpful (7)

    • 5/5

      Installation Time: Less than 1 Hour

      March 13, 2015

      bbk are the best sonds loud igts great

      i love diz bbk muffler i really recoment the bbk mufflers day are the best...

      arteaga

      Year: 2001 Submodel: V6 Rupert, ID

      Helpful (4)

    • 5/5

      Installation Time: Less than 1 Hour

      November 22, 2013

      a bang for your buck

      Even though i had a stock exhaust on my 02 v6, the sound sounds more aggresive with an extra exhaust tip. I recommend this product to people.

      wilder94

      Year: 2002 Submodel: V6 Paterson, NJ, USA

      Helpful (4)

    Related Mustang Categories