CORE 4X4 X-SERIES RATING SYSTEM
$ 72
"Street Smart"— Daily driving, light duty
CORE 4X4 X-SERIES RATING SYSTEM
Compare Series
$ 78
"Trail Capable"— Off-road capable, weekend trails
CORE 4X4 X-SERIES RATING SYSTEM
$ 84
"Maximum Articulation"— Competition, extreme articulation
$ 72
"Street Smart"— Daily driving, light duty
CORE 4X4 X-SERIES RATING SYSTEM
Compare Series
$ 78
"Trail Capable"— Off-road capable, weekend trails
CORE 4X4 X-SERIES RATING SYSTEM
$ 84
"Maximum Articulation"— Competition, extreme articulation
Not Sure Which X-Series? Compare All Three.
Same American steel. Same warranty. Same quality. Choose by how you drive.
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| Tagline | "Street Smart" | "Trail Capable" | "Maximum Articulation" |
| Joint Type | Polyurethane Bushings | Johnny Joint (Single) | Full Articulation Bar |
| Articulation | ~30% | ~65% | ~95% |
| Tubing | 1.625" OD / 3/16" Wall DOM | 1.75" OD / 5/16" Wall DOM | 1.75" OD / 5/16" Wall DOM |
| Price | $72 | $78 | $84 |
| Maintenance | Zero | Periodic grease | Periodic grease |
| Best For | Daily driving, light duty | Off-road capable, weekend trails | Competition, extreme articulation |
| Warranty | Lifetime ✓ | Lifetime ✓ | Lifetime ✓ |
Made in USA
Orem, Utah
Lifetime Guarantee
Unconditional
10 Colors
In-house powder coat
Ships in 3 Days
From our UT facility
Fully Adjustable
0-6" of lift
3 X-Series Options
Only Core 4x4
Why Builders Choose Core 4x4
The only aftermarket suspension brand with an X-Series product system
vs. MetalCloak
One price point, no tier options. Core 4x4 Crawl matches their performance at a better price with a better warranty.
vs. Teraflex
Skip a grease interval? Warranty voided. Core 4x4 Cruise requires zero maintenance — and our warranty covers everything.
vs. Clayton / Budget
Cheaper arms exist. But adjustable, American-made, 10 colors, lifetime guarantee, and an upgrade path? Only Core 4x4.
Everything you need to refresh your suspension.
This rebuild kit includes all the essential components needed to replace common wear items and restore performance.
CE-9110RK × 2
BSH-CB-2579 × 2
See It Installed
Install videos and build guides on our YouTube channel.
Watch more installs on YouTube
Reviews from Google
5.0
★
★
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132 reviews
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.
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.
MT
Marcus Torres
Jan 15, 2026
★
★
★
★
★
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.
GK
GLENN KOSZKA
Apr 27, 2025
★
★
★
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The folks at Core 4X4 are always wonderful to deal with. They explain your options and never pressure or rush things. The quality of the Core Control Arms is top shelf, especially if your goal is to stop wheel hop. I recommend Core 4x4 without reservation ! ! !
CT
Canon TeSelle
Jun 26, 2025
★
★
★
★
★
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.
E(
Eric Hernandez (savagefit)
May 27, 2025
★
★
★
★
★
The whole process was quick and painless. The products are top tier and when I reached out them for package update info, Korby Linscomb was very responsive, and got me the answers I needed the same day. Even when I emailed back to some additional info, he sent what I was looking for that same day. I love core 4x4 and will be giving them my business from now on.
D
DSI
Jul 26, 2025
★
★
★
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Great products with excellent customer service after the sale
ZA
Zen Asher
Mar 23, 2025
★
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The quality and durability of the arms are the best. They are super heavy duty. And lifetime warranty is crazy
JT
Jay Taylor
May 27, 2025
★
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Had a worn out set of rear upper control arms on my TJ. These were old rubicon express long arms. can’t buy replacements and no one makes a direct fit replacement.
Talked with Korby at core off road sent some measurements and photos and a week later new arms showed up. Packaging was perfect fit was perfect.
Would highly recommend giving these guys a call.
JG
James Griffin
Jul 26, 2025
★
★
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★
Customer service is top notch. They answered all of my questions and got me my tracking number for my packages. I just received both of them and the quality is next level. You guys are truly awesome.
