Product Details
This kit includes 9 components, each built and powder-coated in-house.
Jeep Wrangler JK / JKU 07-18 2pc Crawl Series Front Fixed Length End Links
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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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Jeep Wrangler JK / JKU 07-18 2pc Crawl Series Rear Fixed Length End Links
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Jeep Wrangler JK / JKU 07-18 2pc Crawl Series Rear Lower Adjustable Control Arms
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Jeep Wrangler JK / JKU 07-18 2pc Crawl Series Rear Upper Adjustable Control Arms
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Jeep Wrangler JK / JKU 07-18 2pc Heavy-Duty Tie Rod, Drag Link Steering Kit
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Jeep Wrangler JK / JKU 07-18 Crawl Series Front Heavy-Duty Adjustable Track Bar
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Jeep Wrangler JK / JKU 07-18 Crawl Series Rear Heavy-Duty Adjustable Track Bar
View Component →Transform Your Jeep Wrangler JK with Ultimate Suspension and Steering Performance
Transform your Jeep Wrangler JK into the ultimate off-road and on-road machine with the Crawl Series Total Suspension Control Kit (CRL-J-JK-K16). This all-inclusive kit is designed to deliver unparalleled suspension and steering performance, combining adjustable control arms, track bars, front and rear sway bar end links, and a 2.5-ton heavy-duty aluminum steering kit. With this kit, your Jeep is equipped for extreme off-road flexibility, smooth on-road comfort, and precise control in any terrain. Just add springs and shocks, and you have a fully integrated lift kit that outperforms the competition.
Key Features and Benefits
- Complete suspension transformation – The Crawl Series Kit combines all essential suspension and steering components, ensuring they work seamlessly together for unmatched performance. From control arms and track bars to sway bar end links and steering, this kit delivers total harmony and exceptional flexibility.
- Built to outperform the competition – Crafted from high-strength DOM Tubing with a 5/16” wall thickness, upper control arms feature 1.5” OD tubing, while lower control arms use 1.75” OD tubing for maximum strength. Every component is designed to handle the most extreme off-road conditions while providing smooth, controlled handling on-road.
- Superior flexibility with Johnny Joints – Equipped with premium Johnny Joints from Rock Jock 4x4 at every connection, this kit provides unparalleled articulation for tackling uneven terrain. The joints’ durable, low-friction design also enhances ride quality, making this kit as impressive on the highway as it is on the trail.
- Optimized adjustability for lifted Jeeps – Fully adjustable to accommodate lift heights from 0 to 6 inches, this kit allows you to fine-tune alignment, axle centering, and suspension geometry. For lifts beyond 6 inches, custom solutions are available upon request.
Two-Stage Powder Coating
Each component is finished with a two-stage powder coating process for superior durability and corrosion resistance. The zinc primer base provides a robust layer of protection, while the topcoat—available in 10 customizable colors—ensures long-lasting performance and adds a personalized touch to your Jeep’s style.
Made in the USA
Proudly designed and manufactured in the United States, the Crawl Series Total Suspension Control Kit is built to the highest standards of quality and reliability. By choosing this kit, you’re supporting American craftsmanship and investing in premium components that stand the test of time.
Optional Hardware Upgrade
The Crawl Series Kit is designed for straightforward installation, utilizing your Jeep’s factory hardware for a seamless fit. Optional Grade 8 hardware kits are available for vehicles with rusted or stubborn bolts, ensuring a hassle-free setup.
Vehicle Fitment: Jeep Wrangler JK 07-18 – A complete suspension and steering solution for unmatched stability, handling, and off-road capability.
CORE Advantage: Includes 8 adjustable control arms, front and rear track bars, sway bar end links, and a 2.5-ton aluminum steering kit for total vehicle control.
Adjustability: Fully adjustable for 0–6” lifts, allowing precise axle re-centering, caster correction, and optimized suspension geometry for any terrain.
Construction: Built from heavy-duty DOM tubing with a 5/16” wall, featuring Johnny Joints for extreme articulation and powder-coated for long-lasting 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 Joint 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. Welded Johnny Joint on the fixed end and a Forged Johnny Joint on the adjustable end with 1” x 14 TPI - 2.32” long threads.
Rear Upper Control Arm Built With 1.5” OD 5/16” Wall DOM. Welded Johnny Joints on the fixed end and a Forged Johnny Joint on the adjustable end 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 Joint 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 Joint on the adjustable end with 1” x 14” TPI - 2.32” long threads.
Front End Links Built With .75” Cold Rolled Steel. Welded Johnny Joints on both fixed ends.
Rear End Links Built With .75” Cold Rolled Steel. Welded Johnny Joints on both fixed ends.
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 | 2007 - 2018 |
Each rebuild kit includes all necessary components to replace and restore wearable parts.
Construction & Materials
Front End Links built with .75” Cold Rolled Steel. Welded Johnny Joints on both fixed ends.
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 End Links built with .75” Cold Rolled Steel. Welded Johnny Joints on both fixed ends.
Rear Lowers built with Forged Johnny Joints on the adjustable end and a Welded Johnny Joints on the fixed end 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.
Tie Rod and Drag Link made from 2" 7075 Aluminum. Tie Rod and Drag Link use Apex Chassis Forged Rod Ends.
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 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. |
| Series | Crawl Series |
| Lift Size | Stock Height or Lifted 1" or Lifted 2" or Lifted 3" or Lifted 4" or Lifted 5" or Lifted 6" or Lifted 7" or Lifted 8" or Custom length or 1/2 sizes (put desired length in the Order Notes) |
| Hardware | No Hardware or Complete Kit |
| Drag Link Orientation | Factory Mounting (under the knuckle) or Drag Link Flip w/ Tapered Sleeve And Drill Bit (over the knuckle) |
| Stabilizer Clamp | Standard Clamp or Hydraulic Assist Clamp |
| 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.
Accessories & Add-ons
FOX 2.0 IFP Stabilizer Jeep Wrangler JK
$ 229.95
Jeep JK Fox 2.0 Performance Shock Kit
$ 874.99
Apex Chassis Jeep Wrangler JK & Grand Cherokee HD Ball Joint Kit Includes: 2 Upper & 2 Lower
$ 240.00
Jeep JK/JKU Front Track Bar Relocation Bracket Bolt-On
$ 220.00
Jeep JK/JL/JT Weld On Track Bar Bracket
$ 180.00
Reviews of Core 4x4
Suggested Products
Jeep Wrangler JK / JKU 07-18 2pc Crawl Series Front Fixed Length End Links
$ 335.95
Jeep Wrangler JK / JKU 07-18 2pc Crawl Series Front Lower Adjustable Control Arms
$ 493.45
Jeep Wrangler JK / JKU 07-18 2pc Crawl Series Front Upper Adjustable Control Arms
$ 309.70
Jeep Wrangler JK / JKU 07-18 2pc Crawl Series Rear Fixed Length End Links
$ 335.95
Jeep Wrangler JK / JKU 07-18 2pc Crawl Series Rear Lower Adjustable Control Arms
$ 482.95
Jeep Wrangler JK / JKU 07-18 2pc Crawl Series Rear Upper Adjustable Control Arms
$ 461.95
Jeep Wrangler JK / JKU 07-18 2pc Heavy-Duty Tie Rod, Drag Link Steering Kit
$ 1,160.00
Jeep Wrangler JK / JKU 07-18 Crawl Series Front Heavy-Duty Adjustable Track Bar
$ 330.70
Jeep Wrangler JK / JKU 07-18 Crawl Series Rear Heavy-Duty Adjustable Track Bar
$ 346.45