This kit includes 3 components, each built and powder-coated in-house.
Apex Chassis Jeep Wrangler JK & Grand Cherokee HD Ball Joint Kit Includes: 2 Upper & 2 Lower
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Jeep Wrangler JK / JKU 07-18 2pc Crawl Series Front Lower Adjustable Control Arms
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Jeep Wrangler JK / JKU 07-18 2pc Crawl Series Front Upper Adjustable Control Arms
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Elevate your Jeep Wrangler JK's performance with the Crawl Series Front Control Arms Set, designed for model years 2007-2018. Combining superior off-road capability with on-road refinement, this set provides unmatched durability, flexibility, and performance, surpassing competitor aftermarket options.
Engineered for Durability
Built to withstand the rigors of off-road adventures, the lower control arms are constructed from 1.75" OD DOM Tubing with a 5/16” wall thickness, while the upper control arms utilize 1.5" OD DOM Tubing of the same thickness.
- Lower Control Arms: Equipped with Johnny Joints at both ends, delivering enhanced articulation, durability, and smoother performance.
- Upper Control Arms: Feature a U-bracket at the axle end for easy attachment to the factory-installed bushing, while the body end includes a Johnny Joint for adjustability and flexibility.
Precise Adjustability
Designed to support lifts from 0 to 6 inches, this control arms set enables precise alignment correction and front axle re-centering, ensuring optimal suspension performance. For vehicles with lifts beyond 6 inches, additional options and support are available upon request.
Two-Stage Powder Coating for Maximum Durability
Every control arm undergoes a rigorous two-stage powder coating process, beginning with a zinc primer base coat for corrosion resistance, followed by a durable top coat in your choice of 10 color options. This ensures lasting protection and allows you to customize your vehicle’s appearance.
Proudly Made in the USA
The Crawl Series embodies the excellence of American manufacturing. Produced in our Orem, UT facility, these control arms reflect rigorous quality control and the highest standards of craftsmanship, supporting local industries and providing you with a premium product.
Convenient Installation
Designed for straightforward installation using factory hardware, this set can be quickly and efficiently installed. For those dealing with rusted or stubborn bolts, optional Grade 8 hardware kits are available separately for a smooth and secure fit.
Vehicle Fitment: Jeep Wrangler JK 07-18 – Enhances stability, articulation, and handling for both off-road performance and daily driving.
CORE Advantage: Johnny Joints provide insane articulation, improving suspension travel, durability, and control over rugged terrain.
Adjustability: Fully adjustable for 0–6” lifts, ensuring precise axle re-centering, caster correction, and pinion angle optimization.
Construction: Built from heavy-duty DOM tubing with 5/16” walls, powder-coated for superior strength, durability, and corrosion resistance.
Two-Stage Powder Coating: Zinc primer base and top coat available in 10 vibrant colors protect against corrosion and allow for personalized styling of your rig.
Warranty and Origin: Proudly manufactured in the United States, our product includes a lifetime warranty on all non-wear items, providing you with confidence and peace of mind in your purchase.
Built With
Front Lower Control Arm Built With 1.75” OD 5/16” Wall DOM. Welded Johnny Joint on the fixed end and a Forged Johnny Joint on the adjustable end with 1.25” x 12 TPI - 2.625” long threads.
Front Upper Control Arm Built With 1.5” OD 5/16” Wall DOM. Welded u-bracket on the welded end and a Forged Johnny Joint on the adjustable end with 1” x 14” TPI - 2.32” long threads.
| Make | Model | Submodel | Years |
|---|---|---|---|
| Jeep | Wrangler | 2007 - 2018 |
Each rebuild kit includes all necessary components to replace and restore wearable parts.
Construction & Materials
Front Lower control arm built with 1.75” OD 5/16” Wall DOM. Welded Johnny Joint on the fixed end and a Forged Johnny Joint on the adjustable end with 1.25” x 12 TPI - 2.625” long threads.
Front Upper control arm built with 1.5” OD 5/16” Wall DOM. Welded u-bracket on the welded end and a Forged Johnny Joints on the adjustable end with 1” x 14” TPI - 2.32” long threads.
| Vehicle | Jeep Wrangler JK / JKU (07–18) |
| Brand | CORE 4X4 |
| Color | Black or Blue or Charcoal or Green or LightGreen or Orange or Purple or Red or White or Yellow or Custom Color - Other than what is listed above. Extra charge varies. We will reach out after order is placed. |
| Hardware | No Hardware or Complete Kit |
| Series | Crawl Series |
| Placement on Vehicle | Front Upper, Front Lower, Front |
| Mounting Style | Bolt-On |
Reviews of Core 4x4
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Apex Chassis Jeep Wrangler JK & Grand Cherokee HD Ball Joint Kit Includes: 2 Upper & 2 Lower
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Jeep Wrangler JK / JKU 07-18 2pc Crawl Series Front Lower Adjustable Control Arms
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Jeep Wrangler JK / JKU 07-18 2pc Crawl Series Front Upper Adjustable Control Arms
$ 309.70Accessories & Add-ons
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Jeep Wrangler JK / JKU 07-18 10pc Crawl Series Adjustable Control Arm, Track Bar Kit
$ 1,994.95
Jeep Wrangler JK / JKU 07-18 12pc Crawl Series Adjustable Control Arm, Track Bar, Steering Kit
$ 3,097.45
Jeep Wrangler JK / JKU 07-18 16pc Crawl Series Adjustable Control Arm, Track Bar, Steering, End Link Kit
$ 3,622.45Specifications
| Color | Black, Blue, Charcoal, Green, LightGreen, Orange, Purple, Red, White, Yellow, Custom Color - Other than what is listed above. Extra charge varies. We will reach out after order is placed. |
| Hardware | No Hardware, Complete Kit |
| Vehicle | Jeep Wrangler JK / JKU (07–18) |
| Brand | CORE 4X4 |
| Series | Crawl Series |
| Note to Core4x4: | - |
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