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Teraflex Heavy Duty Ball Joints (07-18 Jeep Wrangler JK)

Item J102893
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Market Price $296.99 You Save 11% ($32.00)
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$264.99 (set of 4)

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      Review & Installation Video

      I'm Ryan from, and this is my review of the Teraflex Heavy Duty Ball Joint fitting all 2007 and up JKs. This will fit either the Dana 30 or the Dana 44, so regardless of which trim package you have, these are going to work on your JK.Today, we're gonna talk through the installation of these ball joints, which I'm gonna give a strong two out of three wrenches. This is something you can do in your driveway if you have some traditional hand tools and a ball joint press. Although, it is an involved installation that not everyone is going to be comfortable getting into. We'll talk a little bit more about the installation. If you're not comfortable getting into the amount of detail you need to get into, to get these installed, you can absolutely take your Jeep to a shop and have these installed for you. We're also gonna be talking about the construction and a few of the features that make these ball joints unique compared to the other options on the market.A new set of ball joints is necessary for those of you who have worn-out ball joints. A good way to check if your ball joints are worn is to jack up the front tire, grab it at 12;00 and 6:00 and move it. If it does wiggle, then chances are you have worn ball joints, and they should be replaced. Having larger tires, different backspacing, and wheeling are all things that can prematurely wear out a set of factory-style ball joints. If you're replacing the ball joints because they wore out quickly because of the way your jeep is set up, it is a good idea to upgrade them and not just replace them with another set of OE ball joints. These ones from Teraflex are touted as the last set of ball joints you will ever need to buy, because you can actually adjust the preload on these ball joints. Even if they do start to wear out a little bit, you can adjust them without completely disassembling everything, tighten them down, and get rid of any wiggle that might start to occur.These are a great option for replacement in your Dana 30 or Dana 44. In my opinion, they're really fairly priced. They're only a little bit more than other heavy-duty ball joints on the market that aren't adjustable. This set comes with all four ball joints that you'll need, both upper and lower for both sides of your vehicle. These are a 4140 chromemoly that is heat-treated to give them maximum strength. On the inside, there are no plastic bushings or wear surfaces. This is all metal. This is definitely heavy-duty, and this is definitely designed to hold up for a good long time.Now, what makes these really unique is the adjustability that's built in to the ball joint. Up on the top here, if you loosen a couple of set screws, you can actually spin this section, which will tighten down the preload on the ball joint stud. That's something that you can't find in a lot of places. These are adjustable while they're on the Jeep, and they're also greasable on the Jeep. Sometimes even if you have a grease fitting on your aftermarket ball joint, the factory ones don't have it, but if you have aftermarket ball joints that have a grease fitting, you can't get to them without doing some level of disassembly to your vehicle.These ones come with a special Zerk fitting. As long as you line up the grease passages, you can grease these and service them while they're installed in the Jeep, making these really the last set of ball joints you're going to need to buy. You can service them in the Jeep. You can tighten them down if they ever start to wear. These are gonna keep you from having to swap out ball joints over and over again if you're really hard on your components, because, again, you either wheel your jeep and/or have a large set of tires with a little backspacing that can wear out your ball joints prematurely.Like I said before, I'm giving this a two out of three wrenches as far as installation goes, and it's a strong two out of three wrenches at that. You are going to have to do a good bit of axle disassembly in order to get these installed. You are going to need to have a ball joint press tool handy in order to get these done. Some of you might not feel comfortable tackling this job, and that's perfectly fine. You can always take your Jeep to a shop to have these installed.Another thing to note is that if you have a 2012 or newer JK, they did come with a slightly different yoke on the end of the axle shaft. That is going to need to be ground down in order to install these with clearance. Again, that's another level that adds to this install that some of you might not be comfortable with. If you have a newer Jeep, you're not comfortable grinding on your axle shafts, I would recommend taking your Jeep to a shop. If you have a 2007 to 2012 JK and you are comfortable, you have the tools or you wanna rent them, then this is certainly something you can do in your driveway.The first step in the installation is, of course, removing the tire. Then you'll remove the brake caliper, its brackets, the brake rotor and eventually remove the entire unit bearing and the axle shaft out of the front axle. From there, you can remove the outer C and finally press out the old ball joints. From there, it's just a matter of pressing in the new ball joints and reassembling your axles.Now, you will wanna be very careful when pressing in these new ball joints. A lot of the time, it doesn't matter what the orientation of the ball joint is. Because these are serviceable, you are going to wanna make sure that you follow the instructions carefully for how you orient them. That's going to ensure that you can get to the Zerk fittings and to the set screws so that you can adjust these on the Jeep without needing to disassemble things when they do need adjustment. The nice thing about them is they come right out of the box, the preload properly set, so you won't have to adjust them right when you install them right off the bat.As far as tools go, you'll need a jack and some jack stands. You'll need your traditional hand tools, and you're also going to need that ball joint press. A lot of auto part stores will rent them for you, oftentimes for free. They aren't easy-to-use tool. If this is something that you're comfortable with, again, it's completely doable in your driveway. If you're not comfortable with it or if you have one of those new Jeeps that requires grinding on the axle and you're not comfortable with that, then I would recommend taking your Jeep to a shop to get this done. If you are doing it in your driveway, this is something that I would probably set aside a good three, maybe even four hours if this is your first time doing this, get everything disassembled, pressed out, pressed back in, and reassembled.If you've already gone through a set of ball joints on your Jeep either because you wheel hard, you have big heavy wheels and tires, or a low backspacing on your wheels, this is going to be a great option. It could be the last set of ball joints you'll ever need to buy and install in your JK.That's my review of Teraflex Heavy Duty Ball Joint Set fitting all 2007 and up JKs that you can find right here at

      Product Information

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


      • Upper and Lower HD Ball Joint Set
      • Replaces Factory Ball Joints
      • 4140 Chrome Moly Steel Construction
      • Unique Design for Optimum Performance
      • Heat Treated for Durability
      • Grease Fittings for Easy Servicing
      • Without Knurls
      • Sold as a Set of Four
      • Fits 2007-2018 Jeep Wrangler JK Models


      Off Road Integrity. Your JK's weak factory ball joints aren't made to take repeated abuse from the trail. TeraFlex's Heavy Duty Replacement Ball Joints are a unique solution to handle the demands of your off road life style. Engineered to perform under heavy stresses with excellent wear, this ball joint set out performs factory and includes grease zerks for easy maintenance.

      Extreme Construction. TeraFlex's heavy duty ball joints are made from 4140 chrome moly steel for extreme strength and durability. They're heat treated providing superb fatigue, wear and abrasion resistance. Featuring a completely different design than your weak factory equipment, these ball joints feature metal bearings to handle rotational load and a threaded cup, carbon steel spring plate, ball stud design specific to the lower joint for superior performance under your Jeep's weight.

      Application. The TeraFlex HD Ball Joints are designed for use on 2007-2018 Jeep Wrangler JK models including Unlimited and Rubicon models.

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

      MPN# 3442002

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (58)

      Write a Review

      Ratings Summary

      4.8 out of 5 overall rating from 58 customers

      • March 20, 2020

        5 2013 Wrangler - Oldman2013jeep

        Teraflex ball joints

        Change my factory balls to the new teraflex adjustable ball joints noticed the change in ride and steering. My 2013 jk Wrangler is like new . Also while you are doing this job or having some shop do it replace the tire rod drag line and u joints. Do it once do it right it’s expensive but worth every penny

        Helpful (0)
      • March 08, 2020

        4 2008 Wrangler - Godzuki

        New Jeep!

        Installed them on a 2008 Wrangler jk. Perfect and drives like new. Death wobble, hump stear gone.

        Helpful (0)
      • February 19, 2020

        5 2008 Wrangler - FrancisG

        5 stars

        Easy installation I feel the difference right away 5k miles and all great 2k of those has been Offroad I recommend this ball joins.

        Helpful (0)
      • February 16, 2020

        4 2015 Wrangler - HaroldT

        Must have

        I am running 37” inch tires and this tightened everything up. Highly recommend.

        Helpful (0)
      • January 06, 2020

        5 2010 Wrangler - Sluna915

        Beefy ball joints

        Received them fast and were really packaged safely. No need for ball joints in the future.

        Helpful (1)
      • December 02, 2019

        5 2008 Wrangler - HENRYB

        Easy install with right tools.

        Very hard to do unless you have the right tools. I used Matco Tools Ball Joint kit and that made it easy.

        Helpful (1)
      • November 12, 2019

        5 1991 Wrangler - BlueDragon

        Hefty boogers

        I'm just having a ball with these beefy joints... Axle swapped a Dana HD30 from 2013 Wrangler Sahara into my YJ while doing a Spring Over Axle lift, the donor ball joints were shot so I upgraded with these babies...

        Helpful (1)
      • November 11, 2019

        5 2015 Wrangler - Phoenixwd

        Ball joints

        Love them. Did not take long to install. Can be regreased

        Helpful (1)
      • September 26, 2019

        5 2010 Wrangler - DionV

        The Jaborwocky loves them

        My Jk had a severe alignment problems and was beginning to wobble from 10 years of off road Jeepin. I’m really surprised that they lasted this long! However, I was hesitating to pull the trigger and spend the money as I was on a budget and wasn’t really sure which brand was best for my bucks. Boy am I glad I chose these as they were right at the edge of my price point. These ball joints are superior in every way! from the minute I opened the box I could tell they were high quality as everything was packaged in precut foam to secure all parts from damage. I had them professionally installed and was glad I did because I didn’t own a press and my stock 2010 joints were literally froze in there and required a lot of effort to remove. But once the old wore out ones finally came loose these new very well designed and built ball joints fit perfectly. I really appreciate the grease fittings being installed on both top and bottom that are easy to get to. I had a different mechanic go over the steering parts and linkages afterwards and had another shop do the alignment just in case anything got missed. My JK is now super tight driving down the road with confidence back in my steering and suspension. Very Very pleased and satisfied with this purchase and you will be too! THANK YOU TERAFLEX and EXTEAM TERRAIN

        Helpful (4)
      • September 25, 2019

        5 2012 Rubicon - Butter

        Awesome 5 stars

        Way better than my stocked ball joints 100 better. Love. My stocked ones wore out so fast with just 35 on my Jeep an with these there’s simple no play. I had terrible death wobble at 39 but now with these absolutely none

        Helpful (1)

      Questions & Answers (15 answers)

      5 Top Rated Questions

      I have seen some sites say these require 2012 and newer outer axle ears to be trimmed. I did not see any reference to that on the Teraflex install video. Is there any modification required on the newer JK axle shafts?

      • These ball joints will require not extra modification for proper fitment and functionality.

      Helpful (8)

      Will this fix a death wobble?

      • The Teraflex Heavy Duty Ball Joint may help reduce or eliminate death wobble. However, death wobble can be caused by a number of different suspension components, not just ball joints.

      Helpful (6)

      Are the upper or lower ball joints adjustable to account for positive or negative castor or camber? 1 1/2 degrees?

      • These ball joints are not adjustable for caster/camber adjustments.

      Helpful (4)

      What kind of warranty do they have?

      • TeraFlex Inc. warrants TeraFlex products to the original retail purchaser to be free of defects in material and workmanship for as long as the original purchaser owns the vehicle on which products were originally installed.

      Helpful (1)

      Do I need to carry out any modifications to allow installation at my 2018 JKU? Some sellers quote that kind of grinding is needed or is it just plug in?

      • You can check out the install guide on the page under "Installation Guides" next to the product description. As referenced in the install guide, "Some 2012 and ALL newer Jeep Wranglers come factory with larger front axle shafts (Dana 30 & 44) than previous years, and will require grinding on the stub shaft forging parting line for clearance. Check axle shaft clearance by rotating the unit bearing pointed straight, and turned both directions. Grind where needed to provide adequate clearance."

      Helpful (0)
      Post Your Question
      10 More Questions
      Will these ball joints fit factory stock 2007 Jeep Wrangler? 1 answer
      Is this product made in USA ? 1 answer
      Clarification- previous Q A states this fits up to 2012 jk but the item states 7-18 jk... will it fit my 2014? 1 answer
      Are this ball joints rebuildable. Also if they can be rebuilded do you have to remove or leave in place. 1 answer
      Will these adjust camber issues 1 answer
      will it fit 2012 jeep wrangler sahara unlimited without any grinding for any modification 1 answer
      Are these the new redesigned ball joints with the new relocated grease fitting? Non-knurled? The picture shows original design. 1 answer
      Are these suitable for 2015 JK? i have a 2015 Rubicon unlimited. but the description on the HD Ball joint says 07-12 Wrangler JK. This has put my purchase on hold at the last minute. 1 answer
      Why only 2007-2012? We have an additional half a decade of JK's running around. Would you happen to have any for 2012 onward? 1 answer

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (2) Upper ball joints
      • (2) Lower ball joints

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