This kit includes 6 components, each built and powder-coated in-house.
Jeep Wrangler JL / JLU 18+ 2pc Crawl Series Front Lower Adjustable Control Arms
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Jeep Wrangler JL / JLU 18+ 2pc Crawl Series Front Upper Adjustable Control Arms
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Jeep Wrangler JL / JLU 18+ 2pc Crawl Series Rear Lower Adjustable Control Arms
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Jeep Wrangler JL / JLU 18+ 2pc Crawl Series Rear Upper Adjustable Control Arms
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Jeep Wrangler JL / JLU 18+ Crawl Series Front Heavy-Duty Adjustable Track Bar
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Jeep Wrangler JL / JLU 18+ Crawl Series Rear Heavy-Duty Adjustable Track Bar
View Component →Achieve Perfect Suspension Geometry and Unmatched Off-Road Performance
Transform your Jeep Wrangler JL’s suspension with the Crawl Series Total Control Kit (CRL-J-JL-K10). Designed to provide complete control over your vehicle's axle and suspension, this comprehensive kit ensures proper alignment, axle centering, and superior articulation for both on-road and off-road applications. With 8 adjustable control arms and front and rear track bars, this kit is the ultimate solution for maximizing performance and handling.
Key Features and Benefits
- Ensures Proper Axle Alignment: Maintains precise suspension geometry by centering the axle in the wheel well, correcting pinion and caster angles, and ensuring alignment left to right, preventing issues like crab walking.
- Unmatched Off-Road Articulation: Featuring Johnny Joints at both ends of all control arms and track bars, this kit allows for exceptional flexibility and articulation on challenging trails without compromising durability.
- Tailored for Suspension Lifts: Fully adjustable to accommodate lifts from 0 to 6 inches, the control arms and track bars enable fine-tuning of alignment, axle re-centering, and optimal suspension geometry. For lifts over 6 inches, additional solutions are available upon request.
- Heavy-Duty Construction: Built from 1.75” OD DOM Tubing for lower control arms and 1.5” OD DOM Tubing for upper control arms and track bars, all components feature a 5/16” wall thickness for incredible strength and durability under extreme conditions.
Two-Stage Powder Coating
Every component in the Crawl Series Total Control Kit undergoes a rigorous two-stage powder coating process for maximum protection against the elements. The zinc primer base resists corrosion, while the durable topcoat—available in 10 customizable colors—adds an additional layer of defense and personalization.
Made in the USA
Proudly manufactured in Orem, UT, the Crawl Series Total Control Kit reflects CORE 4X4’s dedication to American craftsmanship. By managing production in-house, we deliver premium-quality products while supporting local industries and maintaining competitive pricing.
Optional Hardware Upgrade
Designed for straightforward installation, the kit uses factory hardware. Optional Grade 8 hardware kits are available separately for vehicles with rusted or stubborn bolts, ensuring a hassle-free upgrade process.
Vehicle Fitment: Jeep Wrangler JL 18+ – A complete suspension overhaul for precise axle alignment, stability, and off-road capability.
CORE Advantage: Provides absolute control over axle positioning, pinion angle, and caster adjustments, ensuring optimal suspension geometry and handling.
Adjustability: Fully adjustable for 0–6” lifts, allowing fine-tuned alignment correction, axle re-centering, and improved articulation for extreme terrain.
Construction: Built from heavy-duty DOM tubing with 5/16” walls, featuring 1.75” OD lowers and 1.5” OD uppers for maximum strength and durability.
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 Joints on the adjustable end with 1” x 14” TPI - 2.32” long threads.
Rear Lower control arm built with 1.75” OD 5/16” Wall DOM. Forded Johnny Joints on both adjustable ends with 1.25” x 12 TPI - 2.625” long threads.
Rear Upper control arm built with 1.5” OD 5/16” Wall DOM. Forged Johnny Joints on both adjustable ends with 1” x 14 TPI - 2.32” long threads.
Front Track Bar built with 1.5” OD 5/16” Wall DOM. Welded Johnny Joint on the fixed end and a Forged Johnny Joints on the adjustable end with 1” x 14 TPI - 2.32” long threads.
Rear Track Bar built with 1.5” OD 5/16” Wall DOM. Welded Johnny Joint on the fixed end and a Forged Johnny Joints on the adjustable end with 1” x 14 TPI - 2.32” long threads.
Tie Rod and Drag Link made from 2" 7075 Aluminum. Tie Rod and Drag Link use Apex Chassis Forged Rod Ends.
| Make | Model | Submodel | Years |
|---|---|---|---|
| Jeep | Wrangler | 2018 - Present |
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.
Rear Lower control arm built with 1.75” OD 5/16” Wall DOM. Forded Johnny Joints on both adjustable ends with 1.25” x 12 TPI - 2.625” long threads.
Rear Upper control arms built with 1.75” OD 5/16” Wall DOM. Forged Johnny Joints on both adjustable ends with 1.25” x 12 TPI - 2.625” long threads.
Front Track Bar built with 1.5” OD 5/16” Wall DOM. Welded Johnny Joint on the fixed end and a Forged Johnny Joints on the adjustable end with 1” x 14 TPI - 2.32” long threads.
Rear Track Bar built with 1.5” OD 5/16” Wall DOM. Welded Johnny Joint on the fixed end and a Forged Johnny Joints on the adjustable end with 1” x 14 TPI - 2.32” long threads.
| Vehicle | Jeep Wrangler JL / JLU (18–Present) |
| 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. |
| Lift Size | 0" — 6" or 6"+ |
| Hardware | No Hardware or Complete Kit |
| Series | Crawl Series |
| Placement on Vehicle | Front Upper, Front Lower, Rear Upper, Rear Lower, Front, Rear |
| Mounting Style | Bolt-On |
Use the vehicle selector on our website to shop by your year, make, and model. On product pages, use the kit builder to select your color, series, lift height, and any add-on options, then add to cart. If you need help, call or email our team.
Standard orders typically ship within 1–3 business days of ordering. Custom color orders take approximately 5–10 business days. Because everything is built in-house, we can turn orders quickly even for custom specifications.
You can reach our team through the contact form on our website, or browse to the Contact Us page. Our team is available to answer pre-sale and technical questions before and after your purchase.
Reviews of Core 4x4
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| 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. |
| Lift Size | 0" — 6", 6"+ |
| Hardware | No Hardware, Complete Kit |
| Vehicle | Jeep Wrangler JL / JLU (18–Present) |
| Brand | CORE 4X4 |
| Series | Crawl Series |
| Note to Core4x4: | - |
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