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Magnaflow Rock Crawler Series Cat-Back Exhaust (12-18 Jeep Wrangler JK 4 Door)

Item J100253
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Market Price $573.99 You Save 12% ($66.57)
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$507.42 (kit)

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      Review & Installation Video

      Product Information

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


      • Has a Fully-Welded Tubing
      • Made of Stainless Steel
      • Easy to Install
      • Fits 2012-2018 Jeep Wrangler JK 4-Door Models


      Function. The Magnaflow Rockcrawler Exhaust reduces engine heat and backpressure to enhance your vehicle's overall performance. It also delivers superior horsepower and torque gains.

      Design. Made of solid stainless steel, this mandrel-bent exhaust offers excellent durability. It has a fully-welded tubing for extra strength.

      Fitment. This exhaust is designed for 2012-2018 Jeep Wrangler JK 4-door models.

      Note: Coupon codes cannot be applied to this product.

      Fitment: 2012 2013 2014 2015 2016 2017 2018

      MPN# 15237

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (42)

      Write a Review

      Ratings Summary

      4.4 out of 5 overall rating from 42 customers

      Installation Time: Afternoon

      Installation Cost: $100-$250

      • February 18, 2020

        5 2017 Wrangler - ChrisW Installation Time: Less than 1 Hour

        Great sound

        Install was easy. Got the existing off in 20 minutes and took another 20 to install the new one. Sounds great on startup with a really nice note when accelerating. There is a drone but it’s nothing too loud. The crackle when shifting gears is great. Not too many miles on it yet but it feels like I get a bit better acceleration and my mpg has gone up a tick. Also, getting rid of the stock muffler gives the back of the Jeep a much cleaner look.

        Helpful (1)
      • July 14, 2019

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

        5 2008 Wrangler - Edwin Installation Time: Less than 1 Hour

        Helpful (2)
      • July 08, 2019

        5 2017 Rubicon - i3onzai Installation Time: Afternoon

        Great Exhaust

        Showed up on time with no damage to the packaging! Installed on 2017 JKUR. Removing factory exhaust was the hardest. I ended up using a saw to cut the pipe out in easy to maneuver chunks, and a cut off wheel to slice the nipple of the exhaust hangers and pull them out. Install on the Magnaflow was really nice. Everything fit just right and had all the correct hardware. After all said and done, there are no rattles, plenty of clearance around everything, and the sound is awesome. Nice low rumble at idle and while on the trails. Gets good and noisy when you put the hammer down getting on the highway, or passing. Clearance wheeling is great also. Flexed out on the rocks there was plenty of clearance for suspension. Thumbs up

        Helpful (3)
      • June 17, 2019

        5 2015 Rubicon - JohnF Installation Time: Less than 1 Hour

        This exhaust rocks!

        Installed the Magnaflow Rock Crawler Cat-Back Exhaust two weeks ago and couldn't be happier. The install was easy and the sound is fantastic. If you are looking for something with a little more rumble, but not too loud, this is the ticket. Fairly quiet at idle and at cruising speeds. Nice sound when on throttle. I can also feel a tangible performance improvement at higher RPMs. Exactly what I was looking for in an exhaust system.

        Helpful (2)
      • June 14, 2019

        5 2017 Wrangler - Jerry Installation Time: Less than 1 Hour

        Great exhaust

        Bolted on easy, I recommend using torch gun to make it real tight. Great sound, it’s not too loud. Much more clearance on the back end. Great product.

        Helpful (2)
      • June 11, 2019

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

        5 2010 Wrangler - PaulB Installation Time: Afternoon

        Big difference..

        I am glad I chose this exhaust after looking at several types and brands. Not the cheapest, or most expensive system but it was worth the cost and wait. I notice a huge difference in horsepower and the nice low sound is a definite improvement over the cheaper competitors rear exhaust that I had . Professionally installed and an Awesome Mod!

        Helpful (4)
      • June 03, 2019

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

        4 2007 Wrangler - Hardcase Installation Time: Afternoon

        Good sound

        Pretty easy to install with a great sound. Not too loud till you put the peddle down, but you can definitely hear the notes.

        Helpful (2)
      • May 31, 2019

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

        5 2018 Wrangler - emjman18 Installation Time: Afternoon

        Nice exhaust

        First things first, hit ALL of your rubber hangers with bb blaster or wd40 before attempting to remove your old system. It took me 2 hours to remove it bc i didn't do that step. The new exhaust went on in less than 20 minutes, very nice clamps and easy to install piping. After a few heat cycles it got a louder, crackles and pops a little bit between shifts or when going into neutral. Doesnt drone untill you hit 3k rpm, not bad on the highway at all. Feels like the engine breathes a lot better with this pipe and with a cold air intake. Jeep whips doughnuts in the dry now

        Helpful (2)
      • May 12, 2019

        5 2017 Wrangler - DisneyJK Installation Time: Less than 1 Hour

        Love it

        Quick and easy install. Sounds great. Took maybe half an hour for me and a friend to put on. Couldn’t be happier.

        Helpful (2)
      • March 20, 2019

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

        5 2011 Wrangler - ckiel123 Installation Time: Less than 1 Hour


        I love the sound. Really changed the way my Jeep sounds and looks honesty. Cold starts are amazing now. Install took me 5 minutes once I took my old system off. Packaging was solid as well. Use lots of WD-40

        Helpful (4)

      Questions & Answers (10 answers)

      5 Top Rated Questions

      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?

      • Hi, The magnaflow rock crawler cat back is designed for the 2012-2018 jk 2 door models.

      Helpful (3)

      Will this fit my 2018 JKU Willy's Wheeler?

      • Yes, the Magnaflow Rock Crawler Cat-Back Exhaust will be compatible with your 2018 JKU Willy's Wheeler.

      Helpful (0)

      How loud is it when Jeep is stripped down?

      • If there is no interior in your Jeep, it will be a bit louder then normal, but as per our reviews, it has a nice tone that is not obnoxious.

      Helpful (0)

      Will I still need exhaust extensions if i get this exhaust with a 3.5 lift?

      • You would still need the exhaust extension with any lift over 2.5".

      Helpful (0)

      Is there one of those I can use for my 2013 4 door wrangler. 3.6

      • For the JKU item, J100253 is the part number you would need.

      Helpful (0)
      Post Your Question
      5 More Questions
      Is this 50 state CARB ( California ) approved? 1 answer
      Would this work well in conjunction with the magnaflow loop delete y pipe? 1 answer
      You say that the exhaust works with stock rear bumper but why then does magnaflow say on their website that it doesn’t fit stock plastic bumber? Are you certain it works without damage or interference on stock wrangler sport 2 Dr rear bumber? 1 answer
      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? 1 answer
      What type of stainless steal is this made of? 1 answer

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