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Flowmaster Outlaw Extreme Dual Dump Cat-Back Exhaust (86-04 V8)

Market Price $509.99 You Save 12% ($60.04)
Our Price

$449.95 (each)

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  • Item 399001
  • MPN# 817682

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    Features, Video & Details

    • Superior Exhaust Growl
    • Accelerated Exhaust Flow for More Horsepower and Torque
    • Compatible with Stock Catalytic Converters or Aftermarket H-Pipes or X-Pipes
    • Dual Dump Style Provides an Attractive Look
    • Mandrel-Bent 2.5"" 409 Stainless Steel Construction for Enhanced Strength and Lifespan
    • Flat Cut Exhaust Tips – Dump Style
    • Direct Bolt-On Replacement Upgrade
    • Lifetime Limited Warranty
    • Fits All 1986-2004 Ford Mustang V8 Models

    Review & Installation Video

    Review & Install Video

    Upgraded Exhaust Sound. Designed with the race enthusiast in mind, this Flowmaster Outlaw Extreme Cat-Back Exhaust is a true reflection of racetrack inspiration. With a unique Dual dump style exhaust, this assembly eliminates the need for a full-length tailpipe, while providing an enhanced exhaust growl, natural to a Mustang V8.

    Upgraded Horsepower and Performance. This aftermarket dual dump exhaust upgrade from Flowmaster is engineered to perform optimally with the OE factory catalytic converters or custom-upgrade H-Pipes and Y-Pipes to provide you added horsepower and throttle.

    Superior Construction. To ensure that this Outlaw Extreme Cat-Back Exhaust by Flowmaster meets the U.S quality threshold, it is made of high-grade, cast Stainless Steel. The metal is tough and sturdy to withstand extreme speed races and high exhaust thermal conditions. Its black powder coat behind the tips further enhances its resistance to corrosion.

    Easy, Bolt-On Installation. The Flowmaster Cat-Back Exhaust –Dual Dump is a direct, bolt-on replacement for your stock tailpipes. The kit comes with the necessary hardware for easy mounting. Using simple tools, the mounting process only takes less than 2 hours.

    Warranty. Flowmaster assures the original product consumer of the Outlaw Extreme Cat-Back Exhaust that the kit is of high quality. For that, the manufacturer issues a Limited Lifetime Warranty.

    Application. This Flowmaster Outlaw Extreme Cat-Back Exhaust crafted to perfectly fit all Ford Mustang V8 models built between 1986 - 2004.

    Fitment: 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 Details

    CA Residents: WARNING: Cancer and Reproductive Harm -

    What's in the Box
    • (1) Cat-Back Exhaust – Dual Dump
    • Hardware
    Installation Info
    Tech Specs
    Will it fit my Mustang?
    • Bullitt - 01
    • Cobra - 93, 94, 95, 96, 97, 98, 99, 00, 01, 03, 04
    • Cobra R - 93, 95, 00
    • 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 - 86

    Recommended for off-road, racing use

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    Questions & Answers (5)

    5 Top Rated Questions

    Will these be louder than the slp 1 catback

    Do the dumps come off? If so would I be able to install a set of exhaust pipes like the flowmaster ones?

    • The Flowmaster Outlaw Extreme Dual Dump Cat-Back Exhaust (86-04 V8) system secures the turn down exit piping to the muffler outlets with clamps. As such that portion of the system would be removable however installation of different exhaust piping may require modification.

    Helpful (0)

    How are they in comparison to SLP 1 mufflers? Since the flowmasters have "baffles".

    • The Flowmaster Outlaw Extreme Dual Dump Cat-Back Exhaust will be quieter than an equivalent setup with SLP Loudmouth 1 mufflers dumped underneath, though both will be extremely loud, especially as a dumped setup.

    Helpful (0)

    Is the price listed only for one muffler, or do they come in a pair?

    • This price is for a complete cat-back which would include two mufflers.

    Helpful (0)

    If i buy the x-pipe for my 02 v6 will this work for my car

    • The Flowmaster Outlaw Extreme Dual Dump Cat-Back Exhaust will be compatible with the Pypes Off-Road or catted X-Pipe. This mid-pipe will allow for the fitment on the V6 models. Below I have provided the two X-Pipes which we do offer for this conversion. 

    Helpful (0)
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    Customer Reviews (5) Write a Review

    Overall Rating 5

    out of 5 stars

    Installation Time:Afternoon

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

    • 5/5

      Installation Time: Less than 1 Hour

      October 31, 2018

      Awesome part

      It is true on what they said. It loud and adds more horse power to your car.


      Year: 2002 Submodel: GT

      Helpful (4)

    • 5/5

      Installation Time: Afternoon

      September 19, 2018

      Perfect for a gt

      These sound amazing. Have them paired up with long tube headers and an off-road x-pipe. Should have made this purchase a long time ago.


      Year: 2003 Submodel: GT

      Helpful (4)

    • 5/5

      Installation Time: Afternoon

      March 16, 2018

      Sounds great

      Worth every penny!!! Sounds very good low rumble at idle then when the throttle opens sounds like a race car.


      Year: 1995 Submodel: GT

      Helpful (6)

    • 5/5

      Installation Time: Afternoon

      March 09, 2018

      Outlaw Dumps '99 V6

      Bought these for my '99 V6, I previously installed Pypes off-road X-pipe for a true dual setup. I was blown away with how it sounds - especially on a V6, sounds great at idle, and after I added hi-flow cats, it cut out the raspiness of the x-pipe. That said, they're pretty loud! The drone can be a bit annoying in 4th gear, but it seems to cut out in 5th. Fitment is pretty good, I had to push and pull the x-pipe around and make some adjustments to get it to fit just right. Lastly, I would definitely coat these with hi-temp rust proof paint, I had them on for a week and they developed some surface rust. Other than that, I love them and plan to put them on future Mustangs I own. I did the install in my driveway in about 2 hours.


      Year: 1999 Submodel: V6

      Helpful (8)

    • 5/5

      Installation Time: Afternoon

      February 07, 2018

      Race car like sound

      Pretty loud with pypes off road x pipe love it, the fitment was a breeze bounces off the ground for aggressive sound


      Year: 1997 Submodel: GT

      Helpful (9)

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