Made in USA
Orem, Utah
Lifetime Guarantee
Unconditional
10 Colors
In-house powder coat
Fully Adjustable
0-6" of lift
3 X-Series Options
Only Core 4x4
RockJock's left hand side UHMW frame bushing out of their JL rear Antirock sway bar kits that include a 28 spline bar. This bushing knocks into the tube in the stock JL frame and supports the Antirock torsion bar.
| Make | Model | Submodel | Years |
|---|---|---|---|
| Jeep | Wrangler | 2018 - Present |
| Vehicle | Jeep Wrangler JL / JLU (18–Present) |
| Brand | RockJock |
Reviews of Core 4x4
5.0
★
★
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132 reviews
RC
Ryan Colligan
Mar 4, 2026
★
★
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I have nothing but good things to say about Core 4x4. I have the crawler series on my JKU and we take it all over the place. These parts handle everything we throw at them.
HK
Harold Kruder
Mar 23, 2024
★
★
★
★
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I needed some parts and had to replace 1 lower control arm and their customer service is great. Helped with answering my questions and got parts shipped quickly.
EL
Eric Labrum
May 27, 2025
★
★
★
★
★
Best customer service I have ever experienced. They are my go to source do to quality and service
JJ
JT JT
Dec 23, 2025
★
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We have all shopped places where the person on the phone makes you feel like they don't have the time to talk to you the customer or answer your questions. I can tell you first hand that's not Core 4x4. They have the best customer service I have seen so far. They have taken the time to respond to all of my questions in a very prompt and professional manner, taking the time to answer each and every question I have had. Lets put it this way if Core 4x4 sells a product I am wanting for my truck I will buy it from them, I highly recommend Core 4x4.
RG
Robert Van Gorder
Apr 27, 2025
★
★
★
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Amazing service. Bought a track bar through Americantrucks.com and they sent it with the wrong size bushing sleeve. Korby at Core 4x4 was quick to get me the correct size and very responsive. Will definitely be using more of their stuff.
MR
Melanee Raynes
Mar 25, 2019
★
★
★
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★
Awesome product and service! I even got some of their swag because it looked pretty darn good. I will definitely be going back and would suggest this business to others looking for quality control arms. Buy local!
RC
Robert C
May 27, 2025
★
★
★
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Fantastic products! Outstanding performance!! Absolutely the best customer service!! You will not be disappointed!
AL
Aaron Lake
Apr 27, 2025
★
★
★
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Korby was a great help with getting me a set of leaf springs for my Cherokee. Great customer service and an awesome product all made in the USA. Proud to support and rock their parts on my vehicle. 👍 …
LM
Logan Matejek
May 27, 2025
★
★
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The parts are a massive improvement over factory. I accidentally ordered the wrong endlinks and they helped me figure out the correct size and sent me new ones.
Definitely an awesome store
AP
Ajay Paynter
Mar 4, 2026
★
★
★
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Great company, who worked with me on shipping parts to arrive in time for a show. When I explained my concern they went above and beyond to make it happen. Quality of the parts is top notch.
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Specifications
| Vehicle | Jeep Wrangler JL / JLU (18–Present) |
| Brand | RockJock |
