CORE 4X4 X-SERIES RATING SYSTEM
$ 120
"Street Smart"— Daily driving, light duty
CORE 4X4 X-SERIES RATING SYSTEM
$ 144
"Trail Capable"— Off-road capable, weekend trails
CORE 4X4 X-SERIES RATING SYSTEM
Compare Series
$ 168
"Heavy-Duty Hauler"— Towing, hauling, heavy loads
$ 120
"Street Smart"— Daily driving, light duty
CORE 4X4 X-SERIES RATING SYSTEM
$ 144
"Trail Capable"— Off-road capable, weekend trails
CORE 4X4 X-SERIES RATING SYSTEM
Compare Series
$ 168
"Heavy-Duty Hauler"— Towing, hauling, heavy loads
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" | "Heavy-Duty Hauler" |
| Joint Type | Polyurethane Bushings | Johnny Joint (Single) | Heavy-duty Johnny Joint |
| 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 | $120 | $144 | $168 |
| Maintenance | Zero | Periodic grease | Periodic grease |
| Best For | Daily driving, light duty | Off-road capable, weekend trails | Towing, hauling, heavy loads |
| 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 × 4
CE-9110NRK × 4
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
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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.
MN
Mike Nielsen
Nov 23, 2025
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The customer service is first class. I had an issue with a track bar I installed on my F350. I don’t have any other Core 4x4 parts yet, but with the way I was treated, I know their parts are well done, because they went above and beyond to make sure I was made whole. They wouldn’t be in business if they had to take care of a lot of people like they took care of me. Will definitely be back when it’s time to build the Jeep!
EC
Eric Cox
Jul 26, 2025
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Prompt, professional, and courteous service! Quality parts and broad assortment of products to suite your 4x4 needs:)
GV
Gil Valk
Sep 24, 2025
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Excellent service, Prompt responses when needing technical assistance, Amazing looking parts that fit excellently. I would recommend them to anyone looking for suspension components. Also very well packaged when we received the shipment, which means no damage from shipping company!! We went with the Crawl Series double adjustable kit and it definitely looks killer on our build!!!
CM
Cameron Masters
Mar 24, 2023
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Absolutely incredible family owned business. I asked to pick up my order since I’m local and they came in on a weekend to accommodate. Had to make some adjustments to parts and took the time to make sure it was perfect. Parts are incredible quality. If you have a Jeep, do not hesitate to support this local business.
DD
DANIEL DUSSAULT
Nov 23, 2025
★
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Very beefy items for a very reasonable price. Personally have CORE rear track bar and all upper control arms for my 04 Jeep TJ. Had a slight issue with control arm length and they went above and beyond to swap jam nuts to get me where I needed to be. Really have to appreciate a company like this.
RM
R2d2 Movi78
Feb 21, 2026
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I’m extremely impressed with Core 4x4. The quality of their parts is outstanding — everything feels solid, well‑built, and engineered with real attention to detail. Shipping was fast and everything arrived perfectly packaged. Their customer service is just as good as their products: responsive, helpful, and genuinely committed to making sure you get exactly what you need.
Overall, a top‑tier experience. I’ll definitely be buying from them again. Specially thank you Mr. Linscomb from Core 4x4. Arturo M.
M
Matt
Mar 23, 2024
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The best products on the market. 95% of my xj is core 4x4 products
