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Flowmaster Force II Dual Cat-Back Exhaust (99-04 V6)

Market Price $638.99 You Save 12% ($73.75)
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$565.24

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  • Item 18420
  • MPN# 17275

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    Features, Video & Details

    • Classic Flowmaster Super 40 Series Sound
    • Aggressive V8 Look and Sound
    • Bolts Up to the Stock Factory Y-Pipe
    • Durable 2.5" Aluminized Steel Tubing
    • 2.5" Polished Stainless Steel Tips
    • Includes Two Flowmaster Mufflers
    • Fits 1999-2004 3.8L and 3.9L V6 Mustangs

    Review & Installation Video

    Review & Install Video

    Flowmaster V8 Style and Sound. Give your V6 Pony that unmistakable Flowmaster V8 sound and power with the Force II Dual Cat-Back Exhaust system. This Dual Cat-Back system improves exhaust flow using Flowmaster's patented chambered super 40 series muffler design for a throaty, aggressive exhaust note.

    No Cutting or Welding Required. Unlike so many other aftermarket V6 dual exhaust kits that require cutting and welding the stock Mid Pipe, the Flowmaster Force II system simply bolts right up to the stock Y-pipe for a no hassle installation

    Quality Construction. Constructed from mandrel bent 2.5" 16 gauge aluminized steel tubing for it's corrosion resistant properties, the Flowmaster Force II Dual Cat-Back features (2) Super 40 Series chambered mufflers with 2.5" diameter OEM style polished stainless steel tips for great muscle car looks and sound.

    Application. This Flowmaster Force II Dual Cat-Back Exhaust system is designed to bolt-on to the existing stock Y-pipe on of any 1999-2004 3.8L and 3.9L V6 Mustang.

    Fitment: 1999 2000 2001 2002 2003 2004 Details

    What's in the Box
    • (1) Y-Pipe / Muffler Assembly
    • (2) Tailpipes
    • (1) Muffler Hanger
    • (2) Tailpipe Hangers
    • (6) Hanger Keepers
    • (2) Clamps
    • (2) Rubber Hangers
    • (4) Bolts
    • (4) Washers
    • (4) Nuts
    Installation Info
    Tech Specs
    Cat-Back Exhaust Specifications
    Piping Material: Aluminized Steel Tip Material : Polished Stainless Steel
    Piping Size: 2.5" Tip Size: 2.5"
    Muffler Type: Chambered Fitment: 1999-2004 V6 Mustangs
    Will it fit my Mustang?

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    22 Questions / 33 Answers

    Ask a Question

    how will these sound i have a stock 02 mustang and was thinking about buying this dual conversion kit but wondering if it would sound deep and aggressive or more like a ricer.

    marc73

    • It definitely does not sound like a ricer. It has that deep, aggressive sound that a V8 has. Exactly what you'd want to hear from a dual exhaust. I have an almost stock (cold air intake) 03 mustang with this exhaust system, and I usually get asked if my stang is a V8.

      Flaco12

    Show 2 more answers Helpful (9)

    I have a 2002 V6 mustang hardtop, I'm wondering how this exhaust sounds inside of the car, mainly does it drone at all? My exhaust is stock other than BBK shorty headers

    Crashin

    • Hello! The Flowmaster Force II Dual Cat-Back Exhaust should not give you much of a drone. With the BBK shorty headers, and this exhaust combo, you will be able to hear the exhaust much better.

      JacobC

    Helpful (2)

    Will this pass the California smog test if this is the only mod I install?

    Rodeo15

    • The Flowmaster Force II Dual Cat-Back Exhaust (99-04 V6), should not effect a smog test. Generally, any mufflers or cat-back exhaust modification will not effect smog tests. Only mid-pipe or bolt on engine modifications will needs a CARB EO# approval for use in California. However, do be sure to check your local inspection, emission and noise regulations prior to ordering.

      JoshAM

    Helpful (2)

    Is this cat-back system a direct fit with the Flowmaster High-Performance Catted Y-Pipe?

    JuanV

    • Yes, this exhaust is compatible with the Flowmaster y-pipe and will be a direct fit. 

      AMJalisaB

    Helpful (0)

    I have a 2000 convertible, does the convertible present any problems with the install.

    williyjoe

    • The Flowmaster Force II Dual Cat-Back Exhaust would work with the convertible models and you should not have any issues no.

      AMRickyD

    Helpful (0)

    Are the tailpipe hangers what allows the tailpipe tips to hang below the stock V6 bumper? If so, are those hangers available separately for use with a V8 exhaust system to be installed on a V6? Or are these V6 tailpipes, passenger and driver side available separately?

    Bogey

    • The Flowmaster Force II Dual Cat-Back Exhaust includes tailpipe hangers that will allow the pipes to hang slightly below the bumper. We currently do not carry them separately.

      AshleyK

    Helpful (0)

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    Customer Reviews (36) Write a Review

    Overall Rating 4.7

    out of 5 stars

    Installation Time:Full Day

    Installation Cost:0-$100

    • Loudness / Volume 4 4
    • Exhaust Note 4.571429 4.6
    • Fit & Finish 4.2 4.2
    • Bang For Your Buck 4.6 4.6



    • 5/5

      Installation Time: Less than 1 Hour

      July 10, 2018

      Great product

      Great product easy install recommend not using clamps make sure you weld the pipes together for a better hold

      EricR

      Year: 2004 Submodel: V6

      Helpful (0)

    • 5/5

      Installation Time: Weekend

      July 06, 2018

      Flow master 2.

      Very pleased, nice rumble, and it also free up some horses. I all so have the bbk shorty headeder, well please.

      Frankies

      Year: 2000 Submodel: V6

      Helpful (0)

    • 4/5

      Installation Time: Afternoon

      May 10, 2018

      flowmaster

      Product was good quality and sounds good but was not very easy to get pipes over rear end, use a lift

      MikeH

      Year: 2003 Submodel: V6

      Helpful (1)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: 0-$100

      April 20, 2018

      Sounds perfect

      Sounds and looks great. I would recommend it for anyone who just wants a mellow sound.

      williyjoe

      Year: 2000 Submodel: V6

      Helpful (1)

    • 5/5

      March 07, 2018

      Flow master force

      Fit great, good sound for a six cyl. Rumbles like a stock fox body gt.

      BennieC

      Year: 2006 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Shop Install

      February 23, 2018

      Just the right sound

      I put these pipes on my '04 V6. The sound is great. Not too much which wouldn't sound real. But enough to make people take a second look. Can't really tell about increased performance. I've only had them 3 days.

      MarkH

      Year: 2004 Submodel: V6

      Helpful (2)

    • 5/5

      Installation Time: Afternoon

      October 07, 2017

      Great exhaust

      Relatively easy to install and great sound! I installed it solo, so it took a little longer than normal.

      ThomasP

      Year: 2004 Submodel: V6

      Helpful (2)

    • 5/5

      Installation Time: Afternoon

      September 14, 2017

      Nice tone

      First off let me preface my review with something everyone needs to come to terms with.....this exhaust will not and does not make your V6 sound like a V8....don't be naive and think it will. I've owned both V8 Mustangs and V6, and a sixer can never produce the sound you get from those extra horses trotting under the hood of a V8. You want V8 sound, buy a V8....simple as that. Now, with that said...I am currently moding out a sixer I inherited, and I will say that this exhaust does open up the car and let it breathe while rewarding you with a bit more throttle response, but nothing to brag about. I also have it paired with a CAI, which obviously opens everything up that much more. This exhaust paired with a CAI will absolutely wake your car back up and breathe life back in her. Obviously doing the extra work and spending the extra few bucks to install a TRUE dual exhaust system will sound better and perform better, but this is a very simple install and is a great bang for your buck. Install is a breeze. I did it in my garage, by myself, using a jack and stands, in less than a couple hours, including removing the old exhaust. Looks really good exiting the rear, even if you keep the stock rear cover on.

      RickV

      Year: 2000 Submodel: V6

      Helpful (6)

    • 5/5

      Installation Time: Afternoon

      August 03, 2017

      Perfect sound for your pony

      My mustang was based stock, single exhaust. She sounded OK when you got on the gas, but didn't have that tone I wanted. But now, even with stock headers and cats she sounds perfect even on slow take off. Not overly loud, but definitely sounds more like a mustang should.

      KaelynJ

      Year: 2002 Submodel: V6

      Helpful (3)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: 0-$100

      May 04, 2017

      Nice

      Made my v6 sound and look way better than before 10/10

      JoeyM

      Year: 2003 Submodel: V6

      Helpful (2)

    • 4/5

      Installation Time: Afternoon

      April 29, 2017

      Great Exhaust

      This exhaust is one of the best exhausts you can buy for a new edge V6! The install took me and 2 other people around 3 hours with a lift. We only had a little bit of trouble getting it to fit around the axle on the passenger side, but with a bit of maneuvering we got it in place perfectly. Now in my personal opinion, this exhaust will only make your V6 sound like a V8 at low RPMs. (around 1-2.5) otherwise it sounds like a 350Z or a 370Z. (especially around 2.5-3.5) Even thought it doesn't sound like a V8, it still sounds very very good! Also it is not as loud as I expected but that is ok because this is my daily driver and I personally don't want a very loud exhaust and I can always take out my cats if I want it louder. Also it does not "drone" at all. Overall this is a very good exhaust and i highly recommend it to anyone new edge V6 owner looking for a new exhaust.

      Crashin

      Year: 2002 Submodel: V6

      Helpful (4)

    • 5/5

      March 21, 2017

      Dual exhaust

      Sounds and looks great. Soon as it was installed and started up. Noticed a big difference in sound. Highly recommended product

      HowardJ

      Year: 2002 Submodel: V6

      Helpful (2)

    • 4/5

      Installation Time: Afternoon

      December 17, 2016

      Nice clean tone

      Let me start by saying I love the note this exhaust puts out its exteremly clean and really enhances the motors sound rather then sound like all pipes like a lot of mustangs these days. Fitment wasn't too bad other then having to mess around with the lift to get the axle to raise so we could get the x pipe bolted to the stock pipe. Other then that just 2 21 year olds and less then 2 hours to install. Overall great product I always wanted this exhaust system. Only downside is between 25-33 rpm the tone sorta cuts out. So keep on rippin it and it sounds great 100 of the time!!

      Raddhaddz

      Year: 2002 Submodel: V6

      Helpful (3)

    • 5/5

      Installation Time: Less than 1 Hour

      September 26, 2016

      Well worth it

      It is not as loud as I would have hopeb but still sounds great and easy and quick to install

      X1xdawgx1x

      Year: 2003 Submodel: V6

      Helpful (3)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: 0-$100

      September 22, 2016

      GREAT PRODUCT!

      This exhaust gave my mustang a great look and sound! I highly recommend this product!

      RStang29

      Year: 2004 Submodel: V6

      Helpful (4)

    • 5/5

      September 19, 2016

      Flowmaster rules

      Very pleased with the Flowmaster Force ll cat back. The quality of the components was top rate. The tailpipes were bent exactly as needed for proper routeing all the way back. All the hardware was top rate also. I installed it on a lift where I worked before retirement. I would strongly recommend a lift for installation. an take your time for a perfect installation. they sound an look great. took me 2 hours.

      retiredmarine

      Year: 2003 Submodel: V6

      Helpful (2)

    • 5/5

      August 17, 2016

      exhaust

      I like the sound I got not load but deep and my response is wild but it is only v6 , I am happy

      dmiller57

      Year: 2000 Submodel: V6

      Helpful (3)

    • 4/5

      Installation Time: Shop Install

      Installation Cost: $100-$250

      June 23, 2016

      Flowmaster Force II Dual Catback Exhaust

      Good exhaust. A major upgrade from the stock exhaust. It's got that classic Flowmaster sound that we all love and overall I'm satisfied with them. They really kick in at around 3000 RPM. Always brings me a smile to my face. I got them installed at a shop and it took about 2 hours.

      Flava

      Year: 2004 Submodel: V6

      Helpful (2)

    • 4/5

      Installation Time: Full Day

      February 12, 2016

      Great sound, not so great fit.

      Overall i would recommend this exhaust. going from a stock to this is quite the improvement. I noticed an increase in horse power simply because it didnt get choked up in the higher rpms the way the stock exhaust did. the exhaust as loud as a gt with a very nice deep pur and a rumble while idling. Do not let under estimate the difficulty of putting an exhaust like this together. I recommend a lift but if you don't own one jack up both the back axles. although it was difficult ALMOST everything fit fine. the screw holes on the new exhaust did not match up with the screws coming from the old exhaust pipe. I had to drill new holes to make it fit.

      Grant

      Year: 2000 Submodel: V6 Omaha, NE

      Helpful (2)

    • 4/5

      Installation Time: Afternoon

      August 19, 2014

      This great for the V6 owner

      Awesome sound! Easy installation, highly recommend for V6 owners looking for great sound from their stang!

      Sarge204

      Year: 1995 Submodel: V6 Endwell, NY, USA

      Helpful (4)

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