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Flowmaster Force II True Dual Cat-Back Exhaust (05-09 V6)

Item 18466
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      Review & Installation Video

      Product Information

      Features, Description, Reviews, Q&A, Specs & Installation


      • True Dual Exhaust for the V6
      • Includes X-Pipe, Cat-Back and 60 Series Mufflers
      • 2.25" 409 Stainless Steel Mandrel-Bent Tubing
      • 3.5" Polished Stainless Steel Tips
      • Reuses Stock Catalytic Converters
      • Fits 2005-2009 V6 Mustangs


      True Dual Exhaust. Convert your V6 Pony to a true dual exhaust with the Flowmaster Force II True Dual Cat-Back Exhaust Conversion Kit. This system includes the X-Pipe, Cat-Back, and Mufflers needed to give your Mustang an impressive V8 sound and an increase in rear wheel horsepower.

      Signature Flowmaster Sound. Add the classic Flowmaster sound you want to your V6 without worrying about attracting unwanted attention with a Flowmaster Force II catback. The Flowmaster 60 Series Delta Flow mufflers give your Pony a deep, aggressive sound at wide open throttle, but don't create a lot of interior noise when cruising. They're a great choice for enthusiasts who want to improve exhaust flow and tone without being obnoxious.

      Reuses Stock Cats. The installation of the included Flowmaster V6 X-Pipe will require cutting the factory Y-pipe and reuses the factory catalytic converters saving you money and keeping you smog legal.

      Quality Construction. Constructed from durable 2.25" 409 stainless steel tubing for its corrosion resistant properties, the Flowmaster catback features chambered 60 Series mufflers with massive 3.5" diameter polished stainless steel tips for great muscle car looks and sound. As an added bonus the tips are embossed with the "Flowmaster" logo for true custom styling.

      Application. This Flowmaster Force II True Dual Cat-Back Exhaust Conversion Kit is designed to fit the 2005-2009 V6 Ford Mustangs equipped with the 4.0L V6 engine. Reuses the factory Catalytic Converters.

      Technical Note: This Flowmaster system attaches after your factory catalytic converters to convert your single exhaust to a true dual exhaust from the cats back. Modifications or a new rear bumper valance are required to accommodate the dual pipes. AmericanMuscle recommends a GT Rear Bumper or a Shelby GT500/CS Rear Bumper Cover (sold separately).

      Note: When buying a dual cat-back or axle-back exhaust kit for your 2005 and newer V6 Mustang, you will need to select the "2005+ Mustang 304 Stainless Steel Exhaust Hanger Kit" from the drop down option menu above to properly install your new exhaust.

      Fitment: 2005 2006 2007 2008 2009 Details

      MPN# 817510

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (20)

      Write a Review

      Ratings Summary

      4.8 out of 5 overall rating from 20 customers

      Installation Time: Weekend

      Installation Cost: $100-$250

      • August 01, 2018

        5 2007 V6 - PhillipB Installation Time: Shop Install

        Great deal

        The Flowmaster dual Force two pipes are awesome sound great look great couldn't be happier

        Helpful (5)
      • July 18, 2018

        5 2007 V6 - jonniebgood Installation Time: Shop Install

        Looks and sounds great

        Should I do if you were a spare lobby we used to use Flowmaster back in the day 60s and 70s

        Helpful (5)
      • July 07, 2018

        5 2007 V6 - WindveilProject Installation Time: Shop Install Installation Cost: $100-$250

        Nice product

        I should have bought this system before I bought the Pypes pipe bombs. This Flowmaster system is just what a v6 should have on it. It will NEVER sound like a v8 but it adds a little more sound without sounding like a rice burner.

        Helpful (6)
      • May 17, 2018

        5 2008 V6 - GregP Installation Time: Shop Install Installation Cost: $100-$250

        Flowmaster Force II catback

        I got them in a timely fashion the packaging was excellent no problems everything was there. Had them professionally installed took him an hour and a half he said he had to do some minor bending of the pipes but that is expected with kits not too loud just wright throaty sound through the gears very little drown on the highway nice product look great sound great

        Helpful (7)
      • April 30, 2018

        4 2006 V6 - Dwight

        Costs a bit more but worth it

        My car is the one that appears in AM's install video for this product. I've been driving it for a few weeks now. The fit is very good and quality of components seems top notch. The sound is more of a low rumble that builds to a growl. The external sound clips in the video are accurate. The interior sound is definitely louder than stock. For the most part it is pleasant but you will have some drone cruising on the highway under load from about 2000-2500 rpms. This is probably inescapable with any 'true dual' system that doesn't have Ford OEM mufflers. It appears to mimic the GT exhaust so if the drone gets to you some stock GT mufflers would probably bolt right on. That one small gripe aside I am very pleased with it and do believe it is worth the extra cost over the cheaper options.

        Helpful (7)
      • April 20, 2018

        5 2007 V6 - Vics2007Mustang Installation Time: Shop Install Installation Cost: $100-$250

        FlowMaster Force ll

        Great sounding V6 Dual Exhaust. You won't be disappointed.

        Helpful (6)
      • October 09, 2017

        5 2007 V6 - VictorE Installation Time: Shop Install Installation Cost: $100-$250

        Flowmaster force IN True Duel cat -Back exhaust

        Bought this system for my 07 4.0 Sounds really good I have no regrets Love the sound :)

        Helpful (6)
      • August 29, 2017

        5 2006 V6 - JonathanM Installation Time: Afternoon

        Great product!

        Everything fit great, clamps all fit didn't need to weld. Sounds great. 100 times better than stock at startup, rev, idle, and while driving. Not obnixous, just loud enough.

        Helpful (7)
      • April 06, 2017

        5 2008 V6 - ChadL Installation Time: Shop Install Installation Cost: $100-$250

        Brought a smile to my face

        I was lost looking at different exhausts for my car. I knew i wanted duels but had no idea what to get. I listened to clips on youtube but that only helps so much because you still dont really get the full effect. I settled on the flowmasters. Shipping was fast. Everything got here in one piece. It cost under $200 to get it installed. The chrome tips out the back look very nice. The garage that installed it said it took alittle time getting them installed right but they finally got it. When i fired it up i knew i made the right choice as i turned and looked at my kid and realized we both had a huge smile on our faces. I am very happy. Thanks AM

        Helpful (10)
      • July 11, 2016

        5 2005 V6 - Riderboy

        Flowmaster Force II

        They have a very nice sound and I am Glad I put them on my 2005 Mustang

        Helpful (7)

      Questions & Answers (10 answers)

      5 Top Rated Questions

      Does this come with cutout template for rear bumper to convert from single exhaust for 2007 mustang 4.0?

      • The Flowmaster Force II True Dual Cat-Back Exhaust does come with the cutout for the additional exhaust hole in the bumper.

      Helpful (2)

      The price says each, does this mean I have to buy it twice?

      • The price for the cat-back is $759.97. This will include the x-pipe, two over-axle pipes, two muffler assemblies, six clamps, as well as installation hardware. You will not need to buy two kits.

      Helpful (2)

      If I install CAI and this Dual Exhaust am I going to have to buy a programmer to re tune it? Or is the programmer just needed to optimize the benefits of the other changes?

      • The Flowmaster Force II True Dual Cat-Back Exhaust will not require a tune, however, depending on the cold air intake you select, a tune may be required.

      Helpful (1)

      Is this California legal? If not are there any dual exhaust add on that is?

      • This Flowmaster Force II True Dual Cat-Back Exhaust would not affect any emissions devices on your Mustang and would pass a smog inspection in California.

      Helpful (1)

      how many decipals does that produce on a 2005 v6

      • At this time we do not have a decibel reading for this exhaust.

      Helpful (0)
      Post Your Question
      5 More Questions
      I've been looking into getting a cat-back for my vehicle, but was wondering if this would be legal in the state of NY. Some say no, others say yes. 1 answer
      Will the pacesetter long tube headers pair up with this set up? 1 answer
      I am considering the flowmaster dual exhaust for my 2007 V6 mustang. My car has been lowered, is there any issue with the install due to the lowering. thanks, Larry 1 answer
      Does it require a tune and do you have to use premium gas? 1 answer
      how much horse power would this exhaust add 1 answer

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) X-pipe
      • (2) Over-axle pipes
      • (2) Muffler assemblies
      • (6) Clamps
      • Installation hardware
      • Instructions

      Tech Specs

      Cat-Back Exhaust Specifications
      Piping Material: 409 Stainless Steel Tip Material : Polished Stainless Steel
      Piping Size: 2.25" Tip Size: 3.5"
      Muffler Type: Chambered Fitment: 2005-2009 V6 Mustangs

      Will It Fit My Mustang

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