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Flowmaster Force II Stainless Steel Axle-Back Exhaust (07-18 Jeep Wrangler JK)

ExtremeTerrain no longer carries the Flowmaster Force II Stainless Steel Axle-Back Exhaust (07-18 Jeep Wrangler JK). Please check out 2007-2018 JK Jeep Wrangler Cat-Back Exhaust for an updated selection.
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Features, Video & Details

  • Axle-Back System
  • 16 Gauge Stainless Steel
  • Black High-Temperature Coating
  • 2.5 Inch Diameter Pipe
  • Mandrel-Bent
  • 3 Inch Brushed Stainless Steel Tip
  • Made in the U.S.A.
  • Stainless Steel Hangers and Hardware Included
  • Flowmaster Limited Lifetime Warranty
  • Fits 2007-2018 JK Wranglers

Review & Installation Video

Review & Install Video

Construction. Flowmaster's Force II exhaust system mounts behind the rear axle, utilizing factory mountings for easy installation. Tubing is fashioned from tough, 16 gauge, 409 stainless steel with a 2.5 inch diameter and 3 inch tip for strong, efficient exhaust flow. This axle-back system includes Mandrel bends to avoid exhaust restriction, and the system is finished in a black, heat resistant coating. This system is made in the USA.

The Force II is designed for Jeepers who want maximum performance combined with a quiet, conservative exhaust note. The sound level is mild inside the vehicle. Throttle response is boosted, and your Wrangler will get more miles per gallon while producing more horsepower and torque.

Application. Flowmaster backs this system with a limited lifetime warranty. This system fits 2007-2018 JK Wranglers, both 2-door and 4-door models.

Fitment: 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 Details

MPN# 817437

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

What's in the Box
  • (1) Muffler Assembly
  • (1) Tail Pipe
  • (2) Exhaust Clamps
Installation Info
Tech Specs
Will it fit my Wrangler?
  • JK Rubicon 2 Door - 07, 08, 09, 10, 11, 12, 13, 14, 15, 16, 17, 18
  • JK Rubicon 4 Door - 07, 08, 09, 10, 11, 12, 13, 14, 15, 16, 17, 18
  • JK Wrangler 2 Door - 07, 08, 09, 10, 11, 12, 13, 14, 15, 16, 17, 18
  • JK Wrangler 4 Door - 07, 08, 09, 10, 11, 12, 13, 14, 15, 16, 17, 18

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Customer Reviews (16) Write a Review

Overall Rating 4.7

out of 5 stars

Installation Time:Afternoon

Installation Cost:0-$100

  • Exhaust Note 4.3125 4.3
  • Fit & Finish 4.9375 4.9
  • Bang For Your Buck 4.5 4.5



  • 5/5

    Installation Time: Less than 1 Hour

    March 08, 2019

    Review from Flowmaster Force II Stainless Steel Axle-Back Exhaust (12-18 Jeep Wrangler JK)

    Best muffler yet

    I love how the muffler sounds, I didn’t even try to do it my self I took it to the muffler shop and within 20 mins I had my flow master done. Sound is amazing I read a lot of reviews saying that it will sound like a civic and this is not the case.

    VictorF

    Year: 2012Submodel: Wrangler

    Helpful (0)

  • 5/5

    Installation Time: Less than 1 Hour

    December 20, 2018

    Review from Flowmaster Force II Stainless Steel Axle-Back Exhaust (12-18 Jeep Wrangler JK)

    As advertised

    Installed it on my 2016 JK Rubi - exactly as advertised Great sound precession muffler

    MarioK

    Year: 2016Submodel: Wrangler

    Helpful (8)

  • 5/5

    Installation Time: Less than 1 Hour

    July 18, 2018

    Review from Flowmaster Force II Stainless Steel Axle-Back Exhaust (12-18 Jeep Wrangler JK)

    Just right

    Simply put this has the right amount of sound for a Wrangler. Not too much, not to little. Super easy install.

    PhillipG

    Year: 2018Submodel: Wrangler

    Helpful (11)

  • 5/5

    Installation Time: Afternoon

    May 09, 2018

    Review from Flowmaster Force II Stainless Steel Axle-Back Exhaust (12-18 Jeep Wrangler JK)

    New Exhaust

    We really enjoy this new exhaust system, its not to loud and over bearing and looks a lot better than factory. It took approx two hours to install, just because it was hard to get the old exhaust off.

    ZAllen

    Year: 2016Submodel: Rubicon

    Helpful (12)

  • 5/5

    Installation Time: Less than 1 Hour

    April 12, 2018

    Review from Flowmaster Force II Stainless Steel Axle-Back Exhaust (12-18 Jeep Wrangler JK)

    Fit great

    Fits really good , easy to install, harness part is taking off old one, little to loud , and haven’t noticed to much improvement over the kandn breather , but it does look great once installed

    RogerB

    Year: 2012Submodel: Wrangler

    Helpful (12)

  • 4/5

    Installation Time: Less than 1 Hour

    March 07, 2018

    Review from Flowmaster Force II Stainless Steel Axle-Back Exhaust (12-18 Jeep Wrangler JK)

    A little louder than expected...

    I have had Flowmaster products on Mustangs for years so I know they tend to be loud. I guess the Mustang has more sound deadening material than the Jeep so I was a bit surprised at the interior cabin noise. Along with the KandN cold air kit, this does slightly improve performance and the dual exhaust looks great on the Wrangler. Sound is good.... but loud. Hardest part of install was removing the stock muffler which I finally had to cut the support arms to remove and then wiggle the muffler off the exhaust pipe as it was rusted. Once it came off, I had the new muffler installed in 5 minutes. Total time was roughly 1 hour.

    WBS1971

    Year: 2012Submodel: Wrangler

    Helpful (11)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: 0-$100

    January 17, 2018

    Review from Flowmaster Force II Stainless Steel Axle-Back Exhaust (12-18 Jeep Wrangler JK)

    Looks awesome

    I had a hard time removing stock muffler so I took it to a shop and I was in and out in less than 30 minuets. I had them weld the Flowmaster on as the clamp I was sent was too big. I preferred the welding anyway. Looks and sounds awesome. Happy with my purchase!

    JM

    Year: 2013Submodel: Wrangler

    Helpful (12)

  • 5/5

    Installation Time: Less than 1 Hour

    September 01, 2017

    Review from Flowmaster Force II Stainless Steel Axle-Back Exhaust (12-18 Jeep Wrangler JK)

    More than I expected.

    Being around a mechanic all of my life (father) I am a bit of a greaser my self. I was a bit skeptic at first from the reviews mentioning it's more like an import rocket. But combined with K and N intake and JMS pedalmax I am more than happy with the results. The sound is a nice almost V8 loudness. Did not take long at all to install this, I didn't even use a jack. HIGHLY RECOMMEND! And the heads turn when they hear me coming....

    MarioM

    Year: 2017Submodel: Wrangler

    Helpful (14)

  • 4/5

    Installation Time: Less than 1 Hour

    August 03, 2017

    Review from Flowmaster Force II Stainless Steel Axle-Back Exhaust (12-18 Jeep Wrangler JK)

    Installing exhaust

    It was a easy install but had trouble with how the tips extended at the bumper , one stuck out further than the other.

    Sara

    Year: 2015Submodel: Wrangler

    Helpful (13)

  • 2/5

    March 18, 2017

    Review from Flowmaster Force II Stainless Steel Axle-Back Exhaust (12-18 Jeep Wrangler JK)

    Mad bumble bee!

    From the minute you start the vehicle you will realize this sound should be on a Honda Civic in the fast and furious movies. Why would anyone want an obnoxious rumble in the woods. Sounds great when standing behind the vehicle while idleing. Reminds me of my 1974 Camaro LT. But once inside and you accelerate it sounds like a vehicle that needs a muffler badly.

    RustyH

    Year: 2010Submodel: Rubicon

    Helpful (17)

  • 5/5

    March 09, 2017

    Review from Flowmaster Force II Stainless Steel Axle-Back Exhaust (07-11 Jeep Wrangler JK)

    Great look

    Easy to install an sounds great I would recommend this muffler to anyone

    JoelW

    Year: 2008Submodel: Wrangler

    Helpful (13)

  • 5/5

    Installation Time: Less than 1 Hour

    September 19, 2016

    Review from Flowmaster Force II Stainless Steel Axle-Back Exhaust (12-18 Jeep Wrangler JK)

    Good product!

    Installed this on my JKU about a year ago has held up well while off roading and has a nice sound to it!

    Chris

    Year: 2012Submodel: Wrangler Unlimited

    Helpful (13)

  • 5/5

    Installation Time: Less than 1 Hour

    June 22, 2016

    Review from Flowmaster Force II Stainless Steel Axle-Back Exhaust (07-11 Jeep Wrangler JK)

    Big improvement

    Easy to install once you get the old exhaust off, hardest part is getting it off of the rubber hangers, so use plenty of penetrating oil. Sound is great compared to the stock muffler.

    JKBud

    Year: 2007Submodel: Wrangler

    Helpful (17)

  • 5/5

    Installation Time: Less than 1 Hour

    August 22, 2015

    Review from Flowmaster Force II Stainless Steel Axle-Back Exhaust (07-11 Jeep Wrangler JK)

    Exhaust note

    The tone has a great rumble at low RPM (under 3 M) Over 3M RPM it gets distorted The Down shift is about the same scenario

    Ricky2008

    Year: 2008Florida

    Helpful (16)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: 0-$100

    May 15, 2015

    Review from Flowmaster Force II Stainless Steel Axle-Back Exhaust (12-18 Jeep Wrangler JK)

    LOOKING GOOD

    sound level is a little louder and not as deep as hoped for. but this is a v-6 ,not a v-8. installed on a 2014 jeep wrangler unlimited.-dual tips look good!

    4LVRAY

    Year: 2014Las Vegas, NV, USA

    Helpful (13)

  • 5/5

    Installation Time: Less than 1 Hour

    June 30, 2014

    Good sounding muffler.

    Fits well, sounds good. It was easy to install. I was able to remove stock muffler and install this one in the driveway. No lift needed.

    jkgriss

    Year: 2007Orange, Tx

    Helpful (14)

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