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MBRP Installer Series Cat-Back Exhaust (00-06 Jeep Wrangler TJ, Excluding Unlimited)

Item J18121
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      Review & Installation Video

      Hey guys, what's up? I'm Ryan from ExtremeTerrain. And today, I'm here with the MBRP Installer Series cat-back exhaust for your 2000 to 2006 TJ. Now, this system is going to be for anyone that's looking for an easy upgrade that's a direct bolt-on for a reasonable price. Whether you're looking for some power and sound improvements, or you're just trying to ditch that old exhaust, you really can't go wrong with this system. Coming in at just over $200, this is currently the most affordable system on our site. As far as muffler design goes, MBRP actually mirrored this off of their Pro Series, so you're going to get the power and sound of a much higher dollar system at a much lower cost. As far as loudness goes on a scale of one to five, I'm going to rate this at about a three since it's going to give you a more aggressive and louder tone over your stock exhaust. This is going to come as a complete kit. Whether you have a four or six cylinder, this will work and it uses all the OEM hangers. This is made of 16-gauge heavy duty steel, and it has an aluminized coating to resist rust. As far as install goes, I'm going to give this a two out of three wrenches since you can use simple hand tools and install this in a few hours. With that being said, let's jump in to the install. So, first up to this install, we're going to unbolt the muffler from the catalytic converter. Now, the flange at the front of it has two bolts, we're going to use a 15-millimeter socket for that. To make it a little easier, if you can remove your skid plate, you'll have better access to get to that. However, our bolts are a little stuck so we're going to just use a long extension and get those out. So, afteryou get those two front bolts out, we're going to need to cut the exhaust so we can fit it out and around the rear axle housing. So, we're going to cut it right here at the back of the muffler where this tailpipe goes over the axle. So, you're gonna want to wear safety gloves and safety glasses. After it's cut, you can go ahead and pull muffler out and then we'll remove the rest of the tail section. So, to remove the tail section, there's two hangers. One is going to be at the front of the axle, the other one's going to be right here. I actually have an exhaust hanger removal tool but you can use a pry bar or really anything to get those off. You want to spray it with some WD-40, that's actually going to make them a little more slippery and easy to come off. So, we're going to remove this first one back here first. And now, we're going to do the other one. This point, you're going to want to grab onto it so it doesn't fall out of the Jeep. So now that we have our factory exhaust removed from our Jeep and our new MBRP Installers Series laying next to it, I wanted to take a minute just to do a side by side comparison. Now, the first thing you're going to notice is the new muffler is smaller. Not only is the muffler smaller, but it's actually going to mount up higher in the vehicle, but it's going to maintain that factory location. The next thing you're going to notice is the inlet and the outlet are larger tubing. This is also a straight through design which is going to give you better flow and more sound. Next, you are going to notice that this piping is a lot straighter and is high clearance as well, so it's going to avoid all the springs, axle and everything back there. So, the last thing to point out is the tip. Now, the tip is made of 304 stainless, so it's not going to rust and it also looks much better than just a pipe sticking out of the back. This is also removable, so if you are going to hit the trails you don't want to scratch it up, you can take it off easily. Now, that piece is stainless steel. The rest of the exhaust is steel, but it's coated in aluminized coating. Now, this is much cheaper than a stainless setup but it's also going to last a lot longer than steel. With that being said, let's show you how this gets installed. So now, that we're back under the jeep, we're ready to start assembling our exhaust. First, we're going to start with our muffler. We're going to go ahead and slide the one end up over the skid plate and then we're going to hook on this back hanger while we get the front bolts in. So next, we're going to use our provided hardware, we're going to put a washer on the bolt, and then we have a washer, a lock washer and a nut. So now that we have our muffler installed, we're going to install our tail section. This is just going to slide over that existing pipe and then we're going to put this hanger on. Now that we have this pipe connected to the muffler, we can go ahead and install this hanger and then we can install our tip. Next, we're going to install our provided clamp and then we'll tighten that up using a nine-sixteenths. So, after you have your clamp tight, we're going to go ahead and move up to the front of the muffler and then tighten up those bolts. We're going to use a nine-sixteenths wrench and a nineteen-sixteenths socket. So, after everything is tightened up, you're ready to install your tip. You're going to use a five-sixteenths Allen key to tighten it up. So, with everything adjusted properly and tightened up, that wraps up my review and install. For more videos like this, check us out at

      Product Information

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


      • Cat-Back Exhaust System
      • Delivers a Rich, Mellow Exhaust Note
      • Boosts Torque and Horsepower
      • Aluminized Steel Piping
      • Mirror Polished T304 Stainless Steel Tip
      • Designed for 2.5L 4 Cylinder and 4.0L 6 Cylinder Engines
      • Fits 2000-2006 TJ Wrangler, Excluding Unlimited Models


      A More Aggressive Sound. If you are looking for an exhaust that will give your Wrangler a more aggressive tone, then check out the MBRP Installer Series Cat-Back Exhaust. You will love the louder, deeper exhaust sound over stock.

      More Horsepower, More Torque. Improving your Wrangler's exhaust sound is great, but you will also need your performance to match. With the MBRP Installer Series Cat-Back Exhaust you will see an improvement in both horsepower and torque. This is thanks to the free flowing design that out flows the factory exhaust.

      Made with Aluminized Steel. This MBRP Installer Series Exhaust System is extremely durable and strong thanks to the use of aluminized steel in the tubing with a natural finish. The exhaust exits out the back with a mirror polished T304 stainless steel tip.

      Hang it Up. This MBRP exhaust kit is designed with easy installation in mind. The system mounts using the existing exhaust hanger locations, and doesn't require cutting or welding. It's simple, fast and easy. Installation takes around two hours to complete, and that's a pretty convenient little kit if you ask me.

      Application. This MBRP Installer Series Cat-Back Exhaust is specifically designed to fit 2000-2006 Jeep Wrangler TJ models powered by the 2.5L 4-Cylinder or 4.0L 6-Cylinder engine.

      Fitment: 2000 2001 2002 2003 2004 2005 2006

      MBRP S5500AL

      CA Residents: WARNING: Cancer and Reproductive Harm -

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Muffler
      • (1) Tail Pipe
      • (1) Exhaust Tip
      • Hardware

      Tech Specs


      Customer Reviews (100+)

      Write a Review

      Ratings Summary

      4.7 out of 5 overall rating from 100+ customers

      Installation Time: Afternoon

      Installation Cost: $100-$250

      • May 01, 2020

        5 2001 Wrangler - TacticalCastle Installation Time: Afternoon

        What I wanted (if I have to run a muffler)

        The muffler on my jeep literally broke off. It looked like several people had tried different things to get my OEM muffler to stay put. When it finally broke it sounded like a screaming daemon, and it was beautiful! I would love to run it that loud all the time but it is not feasible. So I went with MBRP. I have a soft top, with a fully bed-lined interior and am still able to have a clear conversation at 55mph.

        Helpful (0)
      • April 01, 2020

        4 2001 Wrangler - Chris Installation Time: Afternoon

        Sounds Great!

        It was a little harder than I thought so I had a buddy help me because he had a lift. Then it was piece of cake! Looks good and gives my jeep a nice rumble. Nothing over the top, low growl. It's worth it...don't worry!

        Helpful (1)
      • March 31, 2020

        Review shared from MBRP Installer Series Cat-Back Exhaust (04-06 Jeep Wrangler TJ Unlimited)

        5 2005 Wrangler Unlimited - JosB Installation Time: Afternoon

        Best Bang for the Buck

        Easy and Simple installation. Took me about 2hours alone with floor jack and stands. Only down fall play around with rear hanger due to hitting gas tank skid plate.

        Helpful (0)
      • March 19, 2020

        Review shared from MBRP Black Series Cat-Back Exhaust (00-06 Jeep Wrangler TJ, Excluding Unlimited)

        5 2001 Wrangler - MikePapesh Installation Time: Less than 1 Hour

        Cat-Back Exhaust

        Easy install and looks and sounds great. Would recommend

        Helpful (0)
      • March 11, 2020

        Review shared from MBRP Black Series Cat-Back Exhaust (00-06 Jeep Wrangler TJ, Excluding Unlimited)

        4 2006 Wrangler - MReed Installation Time: Less than 1 Hour

        Sounds great, easy to install. Not as loud as you would think but a great replacement for the stock exhaust.

        Helpful (1)
      • March 09, 2020

        Review shared from MBRP Installer Series Cat-Back Exhaust (97-99 Jeep Wrangler TJ)

        5 1999 Wrangler - TJ1212 Installation Time: Less than 1 Hour

        Excellent quality and fit

        Installation was straightforward and easy. Added power with a nice low grumbly exhaust note.

        Helpful (0)
      • February 16, 2020

        Review shared from MBRP Installer Series Cat-Back Exhaust (97-99 Jeep Wrangler TJ)

        5 2001 Wrangler - BrianC Installation Time: Afternoon

        MBRP Exhaust

        Great exhaust for the price . Not too loud , good exhaust note . Install was super easy . Hardest part is taking off the old exhaust .

        Helpful (1)
      • January 09, 2020

        5 2003 Wrangler - JohnR

        MBRP Cat-Back Exhaust

        Exhaust installed and fits as well as the original factory exhaust It sounds great!!!!!!!

        Helpful (3)
      • December 14, 2019

        Review shared from MBRP Black Series Cat-Back Exhaust (00-06 Jeep Wrangler TJ, Excluding Unlimited)

        5 2000 Wrangler - BrettJ Installation Time: Less than 1 Hour

        Great sound and fit

        Everything bolts straight up to factory cat easy install just have to wiggle a bit and if you have a lift you need to stretch the rubber hangers a bit to get them in but they still work louder tone than factory

        Helpful (2)
      • December 10, 2019

        Review shared from MBRP Installer Series Cat-Back Exhaust (04-06 Jeep Wrangler TJ Unlimited)

        4 2005 Wrangler Unlimited - JasonH Installation Time: Afternoon

        Install easy, more interior volume than expected

        I installed this in about 3 hours including some work to cut the old exhaust off. The rear most hanger attaches in the inside of the frame rail and on my LJ it was rubbing the plastic of the gas tank. This may be due to my tummy tuck. I reused the factory hanger location by cutting the hanger off the old muffler and reusing it. Overall the sound outside the Jeep is pretty good, deeper and louder than stock. A little louder than I was expecting. I'm finding however that the extra noise in the cabin is louder than I wanted on a daily driver. The quality and fit of the product were very good and the price was right. If not for the additional interior noise I would be completely satisfied.

        Helpful (2)

      Questions & Answers (28 answers)

      5 Top Rated Questions

      How much horse power will this exhaust add?

      • Upgrading the cat back exhaust can see a 5-10 increase in power. 

      Helpful (6)

      will this fit my unlimited?

      • The MBRP Black Series Cat-Back Exhaust will not properly fit the TJ Unlimited model.

      Helpful (6)


      • Hello, The diameter of the pipe for this system is 2.5"

      Helpful (4)

      in my search this does say that this system will fit the tj unlimited 2004 model. though in the Q A section is says it will not fit properly. Was there a change done over the years?

      • This cat back exhaust is only designed to work with the standard cab size 00-06 Wranglers.

      Helpful (2)

      I have a 2005 LJ unlimited will this exhaust work on it also if I want a louder sound what will work with this model

      10 More Questions
      What is the warranty on this product? 1 answer
      Even though it says "Unlimited" under the Applcations, what is the part number for the Unlimited? Does this mount right to the header, thus requiring ? Do I then need a right and left pipes? Or am I totally of the mark here? 1 answer
      Will this fit a 98 2.5 4l ? 0 answer
      Will this fit California 2002 jeep wrangler the 4.0 with 3 cats this looks like it connects with 2 bolt to the original pipe mine has 3 bolts and and is flat not coned 1 answer
      Will this replace the entire system up to the headers? 1 answer
      Will this fit my 1997 Sahara? 1 answer
      Will this fit my Wrangler with a RE long arm lift? 1 answer
      Is the black finish durable/ 1 answer
      Will this fit the lj 1 answer
      Will this fit a 2004 wrangler TJ X model? 1 answer

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