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Synergy Dana 30/44 HD Ball Joint Set (07-18 Jeep Wrangler JK)

Item J101340
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Market Price $249.99 You Save 20% ($49.99)
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$200.00 (set of 4)

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      Review & Installation Video

      I'm Ryan from and this is my review of the Synergy Ball Joint Set for all of you with either the Dana 30 or the Dana 44 axle in your 2007 and up JK. Today we are going to talk through the installation of this ball joint set, which I am going to give a two out of three wrenches. There isn't any major modification, cutting, drilling, or grinding necessary to get these installed, although you will need a ball joint press in order to get the old ball joints out and the new ones in. And there is a good bit of disassembly of your front axles to do in order to get access to the ball joints. So this isn't something that everyone is going to wanna tackle. If you do decide to tackle this on your own in your driveway, you are going to have set aside around four hours, but we'll get more into the installation in a bit. We're also gonna talk through the construction and a few of the features of these ball joints.A new set of ball joints like this is for those of you who have large, heavy tires on your Jeep and/or go off-roading a lot and have worn out the factory ball joints. The factory ball joints aren't going to last a long time with the big, heavy wheel tire package, heavy wheeling, or with a low backspacing on your wheels, which can push the wheel tire package away from the Jeep. Those are all things that will add additional stress and can wear out those factory ball joints fairly quickly. So an upgraded set like this is a great option if you're replacing your factory ball joints because you're going to get a lot more life out of these joints than you will if you just replace what you have with an OEM set that's exactly the same. These are going to be much, much stronger than those factory OEM ball joints are. Now, these are not an adjustable set of ball joints. You cannot adjust the preload on these like you can with, say, the Teraflex. These are much more of a traditional style ball joint that is just built very, very tough and is very, very strong.As far as construction goes, these studs on these ball joints are a heat-treated 4140 steel. All of the wear surfaces on the inside of the ball joint are metal on metal to give you that strength. These are, of course, a greasable ball joint. They come with these silicone grease boots and spring retainers. They also come with all of your castle nuts, your cotter pins, your Zerk fittings, all of the stuff that you're going to need to actually get these installed. Now, some of the grease fittings aren't your traditional Zerk fitting that you're gonna be able to attach your grease gun to and pump with grease. You will need a specific fitting for the end of your grease gun that is a pointed nozzle in order to depress the ball and fill that particular type of grease fitting. So keep that in mind when you're installing these. You may need that additional piece for your grease gun if you don't currently have it.As I said before, the install for these is going to be a two out of three wrenches, no cutting necessary. However, there is a good bit of disassembly of your front axle to do in order to get your old ball joints out and your new ones in. This is going to take around four hours, give or take, depending on your experience and the tools you have at your disposal. Now, as far as tools go, you are going to need that ball joint press that we talked about. It's not necessarily something you have to purchase, most auto parts stores will rent it or even loan it for free, but it is something you're going to have to have on hand in order to get this job done.So the first step in getting these ball joints installed is removing the tire and the brake assembly. Then you're going to be removing the outer C with the unit bearing and the axle shaft all as one piece to finally expose the inner C with the ball joints in place. You'll use your press to remove the old ball joints and press the new ones into place and then reverse that process in order to get everything put back together. Now, again, I know I made it sound simple, but there are a lot of smaller steps within that process that need to take place. This is going to be an involved install that not everyone is going to feel comfortable with, and that's okay. There are shops that will install these for you without a problem. Again, you'll definitely have to have all your hand tools handy, you're gonna have to have your ball joint press, and you're gonna have to have about four hours if you decide to do this in your driveway.Synergy is known for making really high-quality components, and their ball joints fall right into line with that. These are going to be a very strong ball joint that's gonna hold up really, really well, especially when you compare it to those OEM ball joints, but even when you compare it to some of the other aftermarket ball joints. So I don't think that the asking price of $200 is too much for these ball joints. I think that they are appropriately priced. However, if you are interested in something that's a little bit more modern, a little bit less traditional, the Teraflex ball joints that are adjustable, that are touted as the last set of ball joints you'll ever have to install, are only $40 more than these ones. And again, you can adjust the preload on those if they do start to wear out on you. So that is something to consider. If you're somebody who's a little bit more traditional and you want a more traditional style but very beefed up ball joint, that's where these fall into place and, again, appropriately priced. If you have 40 more dollars, if you want something that's adjustable that you can add preload to if they start to wear, the Teraflex ball joints are available as well.So if you have a big, heavy wheel tire package on your Jeep, you're running low backspacing on your wheels or even wheel spacers, and/or you wheel your Jeep hard, chances are your factory OEM ball joints are not going to last very long. And when it comes time to replace them, you might as well upgrade them to something that is much, much stronger than that original equipment on your Jeep, because these are gonna hold up a ton better than those factory ball joints ever would.So that's my review of the Synergy Ball Joints, fitting all 2007 and up JKs with either the Dana 30 or Dana 44 front axle, that you can find right here at

      Product Information

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


      • Set Includes Upper and Lower Ball Joints
      • Fully Greasable Metal-On-Metal Bushing Design
      • Replaces Factory-Made Ball Joints
      • Made from Wear-Resistant Silicone Polyurethane
      • 12 Month Unlimited Warranty
      • For Use with JK Dana 30 and Dana 44
      • Sold As a Set of Four
      • Suitable for 2007-2018 Wrangler JK Models


      Design and Construction. The Synergy Heavy-duty Front Ball Joint Set is an upgrade from stock which completely eliminates the old nylon liner style for extended durability and performance. The ball joint boots are made from durable wear and tear resisting silicone polyurethane.  Featuring a stud made from 4140 steel and induction heat treated bearing surfaces for the smoothest operation while maintaining the life of the ball joint.

      Advantage. The Synergy heavy-duty ball joint set is ideal for replacing your existing factory-made ball joint sets especially if you're lifting your rig. Both the lower and upper ball joint pieces feature fully greasable metal-on-metal bushing design that offers high wear resistance, giving you more security than stock ball joints which are prone to premature wear on lifted Jeeps.

      Warranty.  Synergy backs this heavy duty ball joint kit with a 12 month unlimited warranty, giving you full security and value for a solid year. Please see manufacture's warranty for full details.

      Application. The Synergy heavy-duty front ball joint set is designed for use with Dana 30 and Dana 44 applications on 2007-2018 Jeep Wrangler JK models.

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

      MPN# 8009-12

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (25)

      Write a Review

      Ratings Summary

      4.2 out of 5 overall rating from 25 customers

      • January 30, 2020

        4 2012 Wrangler - Chileric

        Great replacement!

        I recently purchased these for my jeep because I was having horrible death wobble. Found out both my lowers were shot. I was accidently giving a defective new ball joint. So I contacted the extreme terrain team right away and they were very understanding and sent me a new one that worked. No more death wobble!

        Helpful (0)
      • August 04, 2019

        5 2016 Wrangler - ChristopherM


        a huge improvement from stock joints. really stiff during break in period but much better after.

        Helpful (0)
      • October 03, 2018

        1 2012 Wrangler - MichaelM

        Balljoints bind

        I purchased these after reading the positive reviews and this being my 1st Jeep. After I installed them the steering had memory steer and handled horribly. I took the tie rods off and found it was the right upper joint binding. I got another upper from Orielly's and it's steering good again. Next time I will probably just get Moogs locally.

        Helpful (4)
      • June 29, 2018

        5 2009 Wrangler - ColtonB

        Awesome product!

        Love them, gives a new feel to the rig! My Wrangler was having lots of bump steer and it was really dangerous. Ordered these bad boys and installed them in 4 hours. Love the beefiness of them.

        Helpful (5)
      • February 13, 2018

        5 2014 Wrangler - chaz


        product was all i expected and shipping and delivery

        Helpful (5)
      • January 24, 2018

        3 2013 Wrangler - LoganC

        Get bigger and stronger joints

        They look strong and good out of the box, but when installed one my 2013 jku lifted 3.5 on 35’s there wasn’t much of a difference. Not too happy with it.

        Helpful (5)
      • December 13, 2017

        5 2012 Wrangler - KalimahT

        Awesome upgrade from factory

        Had a crazy death wobble needed a change being my tires are 33in and I want a lift. Haven’t done the lift yet but these ball joints hold up very well however it’s only been about 1month 1/2 so give it time I’ll be back with an updated review

        Helpful (5)
      • December 08, 2017

        1 2001 Wrangler - JimmyS

        Expect 1 year of life

        Pretty much junk, don't expect them to last much past the warranty date and don't expect any exceptions to the 12 month warranty. It seems some have been happy with some of their products, but digging a little deeper it seems they are having some pretty serious quality issues.

        Helpful (5)
      • November 27, 2017

        4 2009 Rubicon - MacMan

        Seem nice, grease boot fitment issue

        Seems to be high quality. The grease boot on the upper ball join is too tight in the hole. I tried to install one prior to installing the ball joint and it cut it. On the other one, I tried installing it after the ball joint was put in, and I can't get it on all the way because the ridges on the ball joint are too recessed in the hole. I *think* it'll still seal o.k. but if I was running in a wetter environment, I'd be worried.

        Helpful (7)
      • October 23, 2017

        5 2007 Wrangler - RileyG

        I'm quite happy with them

        Well, don't plan on swapping ball joints without the special ball joint press. Once I got that, the swap went easy. I just got them in, taking it to get aligned tomorrow, and already the death wobble is gone. The old ball joints were toast and these seem heavier duty and have grease zerks, so I feel confident that they will last awhile. The only unhappiness I have is that the regular grease zerk does not have enough clearance on the axle C to get the grease gun nozzle attached. They do come with a needle type fitting that I probably should use, but I don't have an anything like that for my grease gun, and it's easier for me to loosen the zerk slightly to get the grease gun to fit onto it and tighten it back up. I would recommend these to anyone.

        Helpful (5)

      Questions & Answers (2 answers)

      2 Top Rated Questions

      Just to verify, is this a full set of (4) ball joints plus hardware? This pictures for this product show one upper and one lower ball joint pair plus hardware, but the "whats in the box" tab for this product indicates (2) upper & (2) lower. Thanks.

      • The Synergy Dana 30/44 HD Ball Joint Set (07-17 Wrangler JK) includes the following items: (2) Upper ball joints, (2) Lower ball joints and pictured hardware.

      Helpful (1)

      *SOME 2012 and ALL newer Jeep Wranglers come factory with larger front axle shafts (Dana 30 44) than previous years. Will it require any grinding? Thanks.

      • Thank you for your question! These will not require any grinding or modification to install.

      Helpful (0)
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      Installation & What's in the Box

      Installation Info

      What's in the Box

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

      Tech Specs

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