Alloy USA Ball Joint Kit Upper/Lower Heavy-Duty Jeep Wrangler JK 2007-2018

Alloy USA:


  • 4150 Chromoly Steel
  • Low Profile Zerk Fitting
  • Improved Strength
  • Improves Handling
MSRP $255.50
You save 10%

Alloy USA Heavy-Duty Upper and Lower Ball Joint Kit for 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017 and 2018 Jeep JK Wranglers.

This Heavy-Duty Upper and Lower Ball Joint Kit from Alloy USA is a must have if you have lifted your 2007-2018 Jeep JK Wrangler or if you are experiencing steering related issues due to worn out components.

Features and Benefits of the Alloy USA Heavy-Duty Upper and Lower Ball Joint Kit (11800):
- Includes passenger side and driver side upper and lower ball joints (4 total)
- SAE 4150 Chromoly steel construction
- Low profile zerk fitting
- Steel insert increases strength
- Improves steering

The Alloy USA JK HD ball joints are designed with a low profile (grease) zerk fitting, a feature not offered on factory replacement parts. The inner insert is replaced by a high strength steel socket. This replaces your JK's factory plastic nylon insert. The steel insert increases ball joint strength. The ball and socket use an exclusive threaded preload system that prolongs joint life. The ball and shaft are constructed from SAE 4150 Chromoly steel.

Please Note: Alloy USA heavy-duty ball joints will not work with RCV performance axle shafts.

Alloy USA is a manufacturer of performance drive train products, high strength axle shafts and kits and performance ring and pinion sets. They have over 20 years of experience in the performance market and know what works and how to make it at a fair price.

Order Alloy USA's 11800 Heavy-Duty Upper and Lower Ball Joint Kit for your 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017 or 2018 Jeep JK Wrangler from CJ Pony Parts today!

California Residents: Proposition 65 Warning

Installation Difficulty


Novice skill is required for this installation.

Installation Videos

Video Transcript

Today on CJ Off-road, we're going to make your Jeep's on-road performance a whole lot better.

The fact that your ball joints in your JK can wear out after many years of abuse and a larger tire. So, to fix the problem, today we're going to look at these alloy USA ball joints fitting your 2007-2018 Jeep Wrangler. This alloy USA ball joint kit includes both upper and lower heavy duty ball joints to completely replace the ball joints on your 2007-2018 Wrangler. They feature an SAE 41-50 chromoly steel construction with a low profile zerk fitting to allow it to be able to run with many aftermarket knuckles. Now, the steel inserts are gonna increase strength and improve your steering capabilities on your Wrangler. So, let's get them installed in our 2008 Jeep.

Now, for the tool list on this install, it's gonna be a little bit longer than usual so I'd recommend having a well-stocked mechanics tool set. You're gonna need to have a ball joint press, some 12 point sockets and then even an axle nut socket to make sure you can get the install done properly.

So, we're at the front of our JK and as you can see, we've got it up on the lit and we have the wheels and tires removed. You can use a jack and jack stand to get it up. Just make sure it's safe when you put it up off the ground. We're gonna start with our brake caliper bolts, get those removed, and then we'll show you how to get the ball joints installed. Now, we're gonna remove these 21mm caliper bolts. There's one up top and one on the bottom. We've let them sit in some PB Blaster to make it a little bit easier to get em off.

Now, we can remove the caliper and we're gonna hang it up on the frame wheel. That way there's not too much tension on the brake lines. Pull to rotor off. Pull the axle nut off. We're gonna use a 36mm socket. Now, we're gonna need a 12 point half inch socket to get off these bolts that bolt on the hub assembly.

Now, we had to disconnect the ABS sensor. The location is behind your shock tower so it's kinda hard to see but you simply pull off the red tab and then separate these two and you'll get the ABS sensor disconnected so you can pull your axle assembly out.

We're gonna disconnect the tie rod in. Pull this little push pin here and then we'll disconnect it with a 24mm socket. Ours is aftermarket so it uses a 24. If you have a factory, it will be a 21mm. Put the nut back on. That way, when we disconnect the tie rod, it doesn't fall all the way. Now we can take the lower ball joint nut off. Now we can remove the upper ball joint nut. Make sure you hang onto this ABS line and brake line retaining bracket as you'll put it on with a new set of ball joints. With the nuts removed from the bottom and the top ball joint, we can use a mini sledge and hit on the top to remove the steering knuckle.

So, now we've got our heavy duty ball joint press on our upper ball joint. We've got it with all the necessary attachments and we're gonna get started removing this upper ball joint. This is what your ball joint shouldn't look like. Now we're gonna install our new alloy USA ball joints and I've got one pulled apart here. We've already got it set up to be pressed in. We're gonna start with the lower and push it upwards. Make sure you remove this little dust cap here before you repress it in. We're gonna put a little grease right in here on the ball joint to make it go in to the knuckle a little bit easier. Put the cover back on the bottom of the lower ball joint. We got the upper ball joint installed. Now we're gonna put on that same cap that we out on the bottom. This one goes on the top and then we're gonna put a zerk fitting right up top here.

Now, we're gonna put the zerk fitting right up top here. Just get this snugged up. You don't really need to get it super tight, you're just gonna use it to put grease into your new ball joints. So, once you get the ball joint completely pressed in, you can put the included clip underneath here.

All right. So, we're just about ready to put our old knuckle back on. We actually went and sand blasted it a little bit and cleaned it up because it was really rusty so let's get it back on here now. Now that we have it on, we're gonna use the larger nut and washer on the bottom and then the top just gets the smaller nut. Then we can go back and tighten these up and put the safety cotter pins in both of them. Once you get them both on, you can tighten up the castle nuts and we'll put the cotter pins inside once they're completely tightened up. We're gonna put the cotter pins onto our castle nuts so you're gonna use the larger cotter pin on the bottom nut and the smaller one up top.

Now we can reinstall the axle shaft. Make sure the ABS sensor is facing the front of the jeep. That's how you know the axle shaft is properly aligned. We're gonna put a little anti seize on our hub bolts. That way they're easier to get out if we ever have to access the hub again. Go back and make sure you tighten all the hub bolts evenly. Now you can reinstall the axle nut. We have some anti seize already applied. Now reinstall the rotor. Now you can reinstall the caliper back onto the rotor. I'm just using my hand to get them tight and then we'll go ahead and tighten them up with the torque wrench later. Everything's tightened down including the caliper, the rotor and the axle nut. We can reinstall the tire rod up into the steering knuckle. We'll come back and tighten this down. This is a 24mm. If you have a factory tie rod, it's a 21mm. We're gonna reinstall the ABS line. That way there's no lights on the dash. Complete all the same steps on the other side and your installation is complete.

We just finished up the install of the alloy USA ball joints on our JK and it looks really great and it's gonna make our Jeep ride 100 times better than it did before. The install times was a little bit long. You're gonna give yourself a whole day, if not, a long weekend to do this. We had a lift but you can use a jack and jack stands. Now, you can find these alloy USA ball joints, as well many other great parts for your JK, right here at

Vehicle Fitment

This product will fit the following Wrangler years:

Only registered users can ask/answer questions. Please sign in or create an account.
Write Your Own Review
Only registered users can write reviews. Please sign in or create an account.