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
All necessary hardware included. Ships direct from supplier.
| Make | Model | Submodel | Years |
|---|---|---|---|
| Jeep | Grand Cherokee | 1999 - 2004 |
| Brand | Iron Rock |
| How Much Lift? | 2-3" or 3.5-5" or 5.5-7" or 8" |
| Placement on Vehicle | Rear |
| Mounting Style | Bolt-On |
Reviews of Core 4x4
5.0
★
★
★
★
★
132 reviews
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.
CT
Canon TeSelle
Jun 26, 2025
★
★
★
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Great Experience. I wanted to make changes to my order and Korby was more than willing to work with me to get everything corrected. Hope to deal with these guys again in the future.
TM
T Mac
Mar 23, 2026
★
★
★
★
★
CORE 4X4 Company produces/manufactures exceptional products. My rear upper and lower control arms and rear track bar were powder coated custom Fox “Shock Orange” for my 2024 Bronco Wildtrak. OEM looks minimal compared to the CORE 4X4 control arms. Plus they’re adjustable, serviceable and rebuildable. Shipment was very fast and packaging used custom foam wrapped around the arms and heavy duty boxes. Not even UPS could damage. Korby L. was great to work with and responded quickly with emails and product information. Great products. Great people from the State of Utah. All Made in the USA. 5 Stars!!!
DW
Derek Whitfield
Nov 20, 2025
★
★
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★
Solid product, the lifetime warranty sealed the deal for me. Installed on my TJ and the ride quality improved noticeably. Shipping took a bit longer than expected but the parts were worth the wait.
RH
R and H H
Oct 24, 2025
★
★
★
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★
Top notch company. Mechanic lost bolts that clamp upper control arms. Korby sent out spare bolts no charge. Best customer service I’ve come across in a long time. Only suspension brand I’ll ever use.
MT
Marcus Torres
Jan 15, 2026
★
★
★
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★
Best control arms I have installed on any of my builds. After running every major manufacturer, Core 4x4 is on par or better than all the high-end companies at a fraction of the cost. Lifetime warranty is the cherry on top.
RT
Ruby Timm
Apr 27, 2025
★
★
★
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Bought a new 2019 Ram 1500. Had bad rear wheel hop since new, got all four core 4x4 control arms and it fixed the issue. Thanks
MH
Matthew Handy
Sep 24, 2025
★
★
★
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Ran into an issue with a part that I ordered. Got ahold of them explained to them the issue I was having and they jumped in and got the issue fixed. Hands down the best customer service I have ever dealt with. The parts are hands down amazing. Highly recommend.
N
niceguyr1
Mar 24, 2023
★
★
★
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I purchased upper and lower adjustable arms for my WJ and lowers were missing the spacers. I didn't know until 3 months later when I was installing them. With absolutely zero hassles they quickly sent me the missing spacers. Fantastic product and service! Huge thank you guys for the awesome service and parts!!! Customer service is quickly becoming a lost commodity and you guys gave me hope that it's still alive and well, you just have to buy from the right people... Thanks again for going above and beyond! 👍👍
BW
Brian Wadsworth
Jun 26, 2025
★
★
★
★
★
Amazing product! Shipping was quick, packaging was great and support was outstanding!!
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Specifications
| How Much Lift? | 2-3", 3.5-5", 5.5-7", 8" |
| Brand | Iron Rock |
