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
Front Lower Control Arm Hardware Kit Includes:
4 5/8” x 4” high grade bolts, 4 5/8” top lock nuts, 8 5/8” flat washers
Front Upper Control Arm Hardware Kit Includes:
4 12mm x 80mm high grade bolts, 4 12mm top lock nuts, 8 12mm flat washers
Rear Lower Control Arm Hardware Kit Includes:
4 9/16” x 4” high grade bolts, 4 9/16” top lock nuts, 8 9/16” flat washers
Rear Upper Control Arm Hardware Kit Includes:
4 9/16” x 4” high grade bolts, 2 9/16” top lock nuts, 2 9/16” catch tabs, 8 9/16” flat washers
Front Track Bar Hardware Kit Includes:
2 9/16” x 2.75” high grade bolts, 2 9/16” top lock nuts, 4 9/16” flat washers
Rear Track Bar Hardware Kit Includes:
2 9/16” x 2.75” high grade bolts, 2 9/16” top lock nuts, 4 9/16” flat washers"
Front End Link Hardware Kit Includes:
2 12mm x 70mm high grade bolts, 2 12mm x 80mm high grade bolts, 8 12mm flat washers, 4 12mm top lock nuts, 2 aluminum spacers
Rear End Link Hardware Kit Includes:
2 12mm x 70mm high grade bolts, 2 12mm x 80mm high grade bolts, 8 12mm flat washers, 4 12mm top lock nuts, 2 aluminum spacers
Reviews of Core 4x4
5.0
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132 reviews
RH
Rex Hodges
Jun 26, 2025
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After ordering an upper and lower adjustable control arm kit manufactured by CORE 4X4 from a jeep parts distributor who's intials are E.T., they came with 3 of the threaded ends missing. After over 2 months of phone calls and emails to this E.T. company nothing was resolved. I finally decided to call CORE 4X4 myself and tell them my dilemma. I spoke with a very personable and professional gentleman named Korby, who is one of CORE 4X4's representatives, after a brief discussion of what I went thru he simply asked me for a picture and some measurements and the items I was missing and asked if I could cover ONLY the cost of shipping and I had my missing parts in exactly 1 weeks time. This company not only builds all it's parts in the U.S.A., they stand behind their products with great customer service and life time warranty. My experience with this company and their Rep Korby was fantastic. I would definitely recommend CORE 4X4 to anyone who needs parts for any 4x4 projects. You just can't beat their quality and service.
Rex Hodges
Valparaiso, Indiana
TH
Todd Hume
Jan 22, 2026
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Their products are great but the service is even better!! Thanks Korby.
JT
jacob trice
Apr 27, 2025
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Core 4x4 has outstanding products at a fair price and unmatched customer service. When you call Korby, it's like talking with a friend. Very cool and helpul!
I ordered some custom control arms, but from the wrong product line and they were super cool about returning them and upgrading to a better "Crawl" series. Only charged the difference between the two products. They paid all the return shipping and sent the uprgaded arms super quick. It was only a couple days. Awesome!!
I couldn't be happier with the transaction👍🏼
Also, these control arms are stout and take a beating. I run heck out my Jeep in the rocks and desert. No problems whatsoever.
Thanks Core 4x4, ya'll are welcome at my campfire anytime!
Jake T.
Pleasant Hill, Or.
JI
Jerome Segura III
Jun 26, 2025
★
★
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I bought the 16pc Cruise Series Adjustable Control Arm, Track Bar, Steering, End Link Kit to replace a worn budget 4" lift on my used JKU. These are top quality parts; very solid. Customer service is unsurpassed. They even matched prices on my order placed before the tax day sale. I made an error in ordering a drag link flip kit; they were quick to help me fix this too. There's peace of mind knowing these components are made in the USA. Thank you. 👍👍
PM
Paul Melancon
Aug 25, 2025
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Ordered a control arm and track bar kit for my WJ from Core 4x4 on Monday 7/28 and received it today, Friday 8/1. Im not a state or two away, im in CT aka the other side of the country. Communication is phenominal, emails were responded too in an hour or less. Parts arrived well packed, not damaged, and are great quality for my needs. There arent many companies left that service customers as well as Core 4x4 and i wont hesitate to check them out again if i need something else. Well done!
MP
Mirko Pompili
Mar 19, 2026
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I want to share a truly positive experience.
I ordered a car kit consisting of two packages, but unfortunately one was lost during shipping with UPS. The situation could have become complicated... but it didn't.
The company manager was extremely helpful and professional: he personally followed up on the situation and did everything he could to resolve the issue, even sending me the package again without hesitation.
It's rare to find such attentive and reliable customer service these days.
My sincere congratulations on your professionalism and commitment: that makes all the difference.
SH
Shawn Hooten
Apr 27, 2025
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Great products, shipped the next day during a big sale event. Core 4x4 gets it right and gets it done! Thank you all.
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!
MV
Mr. V
Mar 24, 2021
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Good quality parts, much stronger than stock
JM
Jason Mitchell
Dec 8, 2025
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Installed the full kit on my XJ. Ride quality is night and day better than what I had before. The articulation on the trail is insane. These guys know what they are doing. Already recommended Core 4x4 to everyone in my club.
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