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Magnaflow Rock Crawler Cat-Back Exhaust (07-11 Wrangler JK 4 Door)

Market Price $646.92 You Save 32% ($205.84)
Starting At

$441.08 (kit)

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  • Item J100255
  • MPN# 15239

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Ship to: ASHBURN - 20146
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    Features, Video & Details

    • Improves Outflow and Horsepower
    • Aggressive Exhaust Sound
    • Straight-Through, Perforated Muffler
    • 2.5" Stainless Steel Tubing
    • Bare Steel Slant-Cut Tip
    • Direct Clam-on Installation
    • For 2007-2011 JK Wrangler 4-Door Models

    Review & Installation Video

    Review & Install Video

    Unlock some Power. This moderately louder Magnaflow Rockcrawler Exhaust from Magnaflow is a great way to wake up your Wrangler's performance and sound. A single high-flow, straight-through muffler increases outflow dramatically, letting your engine breathe better and provide better performance.

    Unleash More Noise. The Magnaflow Rockcrawler Exhaust is a more aggressive cat-back, featuring a straight-through Magnaflow muffler with a perforated core. This core helps reduce interior cabin drone and hones the exhaust notes to avoid raspy, empty tones in the higher end of the power band.

    Mandrel-Bent Steel. The Magnaflow Rockcrawler is as tough as it sounds, featuring quality stainless steel 2.5" tubing that's mandrel-bent to precision specs, making for a simple installation and perfect fit. This precision construction keeps the whole kit close to the body to ensure high clearance for off-road use.

    Bolt-on Installation. The Magnaflow Rockcrawler Cat-Back Exhaust is a bolt-on installation, utilizing the provided clamps without the need for cutting, welding, or custom fabrication.

    Application. This Magnaflow Rockcrawler Cat-Back Exhaust fits 2007-2011 JK Wrangler 4-door models.

    Note: Coupon codes cannot be applied to this product.

    Fitment: 2007 2008 2009 2010 2011 Details

    What's in the Box
    • (1) Inlet Pipe
    • (1) Over-Axle Pipe
    • (1) Extension Pipe
    • (1) Muffler
    • (1) Tail Pipe
    • (5) Exhaust Clamps
    Installation Info
    Tech Specs
    Cat-Back Exhaust Specifications
    Piping Material: Stainless Steel Tip Material : Stainless Steel
    Piping Size: 2.5" Tip Size: 2.5"
    Muffler Type: Straight-through Fitment: 2007-2011 4-Door JK
    Will it fit my Wrangler?

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    3 Questions / 2 Answers

    Ask a Question

    Is this system made specifically for a 2-door model JK or will I still have to cut 20ish inches off like most of them?

    DanielW

    Can I use the stock bumper with this exhaust? I've heard that the exhaust might damage the factory bumper by melting it or causing heat damage and I need to change my rear bumper to a metal one to use this exhaust. Is it true?

    Mechedjun

    • The Magnaflow Rock Crawler Cat-Back Exhaust will work with the stock bumper yes!

      Ricky36

    Helpful (0)

    What type of stainless steal is this made of?

    ZacharyC

    • The Magnaflow Rockcrawler Exhaust uses 409 stainless steel in the piping and muffler.

      Rob D

    Helpful (0)

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    Customer Reviews (23) Write a Review

    Overall Rating 4.1

    out of 5 stars

    Installation Time:Afternoon

    Installation Cost:$100-$250

    • Exhaust Note 4.130435 4.1
    • Fit & Finish 4.434783 4.4
    • Bang For Your Buck 4.217391 4.2



    • 5/5

      Installation Time: Less than 1 Hour

      April 18, 2018

      Good Purchase

      Easy installation, noticeable power increase and better gas mileage

      DeanH

      Year: 2008Submodel: Wrangler

      Helpful (1)

    • 5/5

      Installation Time: Less than 1 Hour

      March 30, 2018

      Magnaflow Rock Crawler Cat Back Exhaust

      Received it fairly fast giving that it came from California all the way to Ohio (5 days) and just had the time to install it today. Just as everyone says getting the old exhaust off was a major pain, about an hour, an adult beverage and a few choice words but nothing that grinder and a cut off wheel couldn't handle....... on to the install.....super easy, took about 20 minutes total and I really like the sound. Nothing ricey just a nice lower tone and on the highway it actually is pretty quiet. So overall I would highly recommend this Magnaflow exhaust to all JK owners

      Douglas

      Year: 2007Submodel: Wrangler

      Helpful (1)

    • 4/5

      Installation Time: Afternoon

      March 30, 2018

      Review from Magnaflow Rock Crawler Cat-Back Exhaust (12-18 Wrangler JK 2 Door)

      Better than stock

      Install was easy although it doesn't quite fit correctly. keeping it straight and from rubbing was next to impossible. Need to get some rubber shims. The note sounds more like a car than a truck. I can see where people are comparing it to a "ricer" I don't think it is as bad as that. should deepen after it gets some miles on it. (Removing Stock exhaust is where you will spend most of your time. clamps are tac welded. lots of rust. 2012 )

      NoXskuses

      Year: 2012Submodel: Wrangler

      Helpful (1)

    • 1/5

      Installation Time: Shop Install

      Installation Cost: $250-$500

      March 06, 2018

      Review from Magnaflow Rock Crawler Cat-Back Exhaust (12-18 Wrangler JK 2 Door)

      Bad Fit

      The exhaust did not fit properly on a 2017 JK 2 door. Two hanger points had to be cut then re-welded in order for the exhaust to fit. Without the re-welds, the exhaust resonator hit the frame and the exhaust tip hit the rear frame. Horrendous build quality. The install cost doubled due to the fitment issue.

      Mechedjun

      Year: 2017Submodel: Wrangler

      Helpful (1)

    • 5/5

      Installation Time: Less than 1 Hour

      February 28, 2018

      Review from Magnaflow Rock Crawler Cat-Back Exhaust (12-18 Wrangler JK 4 Door)

      magnaflow rock crawler

      installed on a 2018 rubicon well made easy to install sounds great

      KawikaK

      Year: 2018Submodel: Rubicon

      Helpful (1)

    • 1/5

      Installation Time: Shop Install

      Installation Cost: 0-$100

      February 24, 2018

      Review from Magnaflow Rock Crawler Cat-Back Exhaust (12-18 Wrangler JK 2 Door)

      Bad system

      This exhaust system will not fit a 2015 JK without banging against the frame in 2 places. Very disappointed in Magnaflow for the design. I did replace it with a Magnaflow system with the muffler in the back. Cost me almost $500.00 for the screwed up system.

      JerryF

      Year: 2015Submodel: Wrangler

      Helpful (1)

    • 5/5

      Installation Time: Afternoon

      February 06, 2018

      Review from Magnaflow Rock Crawler Cat-Back Exhaust (12-18 Wrangler JK 4 Door)

      Magnaflow muffler

      Actually like getting into my jeep now sound very good sound very sporty and powerful

      TitoC

      Year: 2014Submodel: Wrangler

      Helpful (2)

    • 4/5

      Installation Time: Afternoon

      November 18, 2017

      Review from Magnaflow Rock Crawler Cat-Back Exhaust (07-11 Wrangler JK 2 Door)

      Good Exhaust for the right person

      This install took right around 3hrs. This exhaust cleans up the underneath and greatly increases the sound. Some might even say it is to loud for them. However I find it just right. The exhaust itself is very well made and the directions are very clear. The only reason this took me so long to install is due to 8 years of rust and corrosion. Make it easy on yourself and have a vehicle lift and a rotary cutter on hand along with air tools. Also you might want to consider on buying some heavy duty rubber to put between the frame rails since the exhuast lays against it to reduce noise vibration. Other than that this exhaust is fantastic and highly recommend it.

      08JeepJk

      Year: 2008Submodel: Wrangler

      Helpful (2)

    • 5/5

      Installation Time: Less than 1 Hour

      November 15, 2017

      Love it so easy to install

      It fit perfect only about a hour to install. love the low exhaust note

      JakeD

      Year: 2007Submodel: Rubicon

      Helpful (2)

    • 5/5

      Installation Time: Less than 1 Hour

      November 02, 2017

      Review from Magnaflow Rock Crawler Cat-Back Exhaust (12-18 Wrangler JK 4 Door)

      Great sound

      Good addition to any jeep for extra clearance. Gives a more powerful note over stock. Install was simple and straightforward once I was able to remove the factory exhaust hangers

      AndrewB

      Year: 2017Submodel: Rubicon

      Helpful (2)

    • 4/5

      Installation Time: Afternoon

      October 31, 2017

      Review from Magnaflow Rock Crawler Cat-Back Exhaust (12-18 Wrangler JK 2 Door)

      Awesome Addition

      Moderate sound at acceleration but very reasonable at cruising speed

      WilliamF

      Year: 2017Submodel: Wrangler

      Helpful (2)

    • 5/5

      Installation Time: Less than 1 Hour

      September 21, 2017

      Review from Magnaflow Rock Crawler Cat-Back Exhaust (12-18 Wrangler JK 2 Door)

      Sound is amazing!

      Got this magnaflow kit for a willys edition wrangler and the sound is better than I heard in videos. Real simple to put on. Turning heads on other jeepers everywhere I go.

      Cory

      Year: 2017Submodel: Rubicon

      Helpful (2)

    • 5/5

      Installation Time: Afternoon

      August 22, 2017

      Review from Magnaflow Rock Crawler Cat-Back Exhaust (12-18 Wrangler JK 2 Door)

      No complaints at all!

      High clearance, really great sound on highways and at low speeds. Done some light off-roading since having the magnaflow rockcrawler exhaust installed. Couldn't be happier, coming off of ledges there is no contact anywhere on the exhaust so it does what exactly what it was designed for. Noticed a slight power kick as well and I haven't been loosing gas as quick so overall I'd say it lived up to what it was meant for! I also can't help but crack a smile every time I start up the jeep!

      ScottC

      Year: 2017Submodel: Wrangler

      Helpful (3)

    • 3/5

      Installation Time: Afternoon

      August 15, 2017

      Review from Magnaflow Rock Crawler Cat-Back Exhaust (12-18 Wrangler JK 4 Door)

      Perfectly tucked but sounds like Honda

      I love Magnaflow and have used there exhaust on everything from hot rods to mustangs and always loved the tone and fit. I don’t know if it is the Penstar V-6 or the muffler, but my Rubicon sounds like a ricey Honda driven by a 16 year old. I have since thrown away the muffler this kit came with and replaced it with a RIPP muffler and it sounds great.

      Ande

      Year: 2017Submodel: Rubicon

      Helpful (4)

    • 5/5

      Installation Time: Less than 1 Hour

      May 31, 2017

      Rockcrawler

      Sound is great. A little growl but not so much to wake the neighbors. Much cleaner looker without the rusty old muffler.

      JohnA

      Year: 2010Submodel: Wrangler

      Helpful (3)

    • 1/5

      Installation Time: Less than 1 Hour

      October 26, 2016

      Do don't buy

      I purchased this exhaust for my Jk unlimited wranger. was very disappointed in the sound of it. It sounds like a suped up honda now. loved magnaflow in the past , but i would go with the Black Series performance exhaust if i could do it over again.

      GR

      Year: 2010Submodel: Rubicon Unlimited

      Helpful (2)

    • 1/5

      Installation Time: Shop Install

      Installation Cost: $250-$500

      July 21, 2016

      Review from Magnaflow Rock Crawler Cat-Back Exhaust (12-18 Wrangler JK 2 Door)

      Awful Exhaust Tone

      Why Magnaflow did not include a resonator is beyond me. It sounds like I'm riding a motorcycle down the street now. I'm all for a lower, little more manly exhaust sound (part of the reason I went with the product, on top of replacing the stock garbage can muffler), but what I got is just terrible. Heading to a muffler shop this weekend to see if they can add a resonator. I've purchased Magnaflow systems in the past...this will be the last time.

      cgrosen

      Year: 2016Submodel: Rubicon

      Helpful (5)

    • 5/5

      Installation Time: Less than 1 Hour

      February 19, 2016

      Love it!

      Best sound to date on the 3.8L and no drone! tucked up out of the way and perfect fitment.

      ClarkKent

      Year: 2007Submodel: Wrangler UnlimitedBoise, ID

      Helpful (5)

    • 5/5

      Installation Time: Afternoon

      February 12, 2016

      Review from Magnaflow Rock Crawler Cat-Back Exhaust (12-18 Wrangler JK 4 Door)

      Love this Exhaust!

      I decided to go with the Magnaflow over the competition due to reputation. I am very happy with the performance as well as sound of the new MF muffler. Entire unit tucks up nicely behind the rear bumper as it adds more clearance by getting rid of the big bulky OE muffler. Highly recommended!

      Flyguy52

      Year: 2013Thornton, CO, USA

      Helpful (5)

    • 5/5

      Installation Time: Afternoon

      October 16, 2015

      Review from Magnaflow Rock Crawler Cat-Back Exhaust (07-11 Wrangler JK 2 Door)

      Nice exhaust for the money....

      Love the look, the sound and the ease of installation. Keeps pipe and everything above the frame height and actually tucks the exhaust tip above my after market Rock Hard 4X4 rear bumper. The bumper will hit and drag before the exhaust tip. Sound is incredible. Not too load as a jeep with an exhaust leak, but just enough. Mine is a manual and sounds great shifting and downshifting. Would recommend this product to anyone wanting a little better than factory sound......

      Robert09

      Year: 2007Newnan, GA, USA

      Helpful (3)

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