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16pc Kit
SKU: CRL-J-JK-K16 ★★★★★ (132 reviews)
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$ 3,079.08 3079.08 USD $ 3,622.45

$ 3,622.45

(Save 15%)

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Order today — ships by Mon, Jun 1
Salt Lake City, UT change
Order by 3:00 PM MT today — we'll start tomorrow
See full timeline
Lifetime warranty Fitment guarantee Ships from Orem, UT 4–8 hr install
Free mounting hardware included — a $100 value
COLOR 11 colors — pick yours
https://core4x4.com/web/image/product.template/1659/image_1920?unique=982bc5a

16pc Crawl Series Adjustable Control Arm, Track Bar, Steering, End Link Kit

SKU: CRL-J-JK-K16
Pick your vehicle to confirm fit
Google 5.0 ★★★★★ (132 reviews)

$ 3,079.08 3079.08 USD $ 3,622.45

$ 3,622.45

(Save 15%)

COLOR 11 colors
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.
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Build Your Kit

  • Vehicle
    Confirm this matches your vehicle. Use Shop by Vehicle to filter correctly.
  • Brand
  • Color
    Powder coat color for control arms and track bars. Does not affect performance.
  • Series
    Cruise: daily driving and light off-road. Camp: overlanding. Crawl: aggressive rock crawling.
  • Lift Size
    Choose your current front lift height. Measure from center of wheel to fender if unsure.
  • Hardware
    Choose upgraded hardware if your factory hardware is worn, damaged, or missing.
  • Drag Link Orientation
    Select flipped drag link only if your steering has already been converted to over-the-knuckle.
  • Stabilizer Clamp
    Match your steering stabilizer mounting style. Standard clamp, hydraulic assist, or tie rod clamp.
  • Note to Core4x4:

Select Color to see price and add to cart.

Order today — ships by Mon, Jun 1
Salt Lake City, UT change
Order by 3:00 PM MT today — we'll start tomorrow
See full timeline
Free mounting hardware included — a $100 value

Alignment recommended Lifetime warranty on all non-wear items Made In USA

Made in USA Orem, Utah
Lifetime Guarantee Unconditional
10 Colors In-house powder coat
Fully Adjustable 0-6" of lift
3 X-Series Options Only Core 4x4

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

Construction & Materials

Jeep Wrangler JK / JKU 07-18 2pc Crawl Series Front Fixed Length End Links

Front End Links built with .75” Cold Rolled Steel. Welded Johnny Joints on both fixed ends.

Jeep Wrangler JK / JKU 07-18 2pc Crawl Series Front Lower Adjustable Control Arms

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.

Jeep Wrangler JK / JKU 07-18 2pc Crawl Series Front Upper Adjustable Control Arms

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.

Jeep Wrangler JK / JKU 07-18 2pc Crawl Series Rear Fixed Length End Links

Rear End Links built with .75” Cold Rolled Steel. Welded Johnny Joints on both fixed ends.

Jeep Wrangler JK / JKU 07-18 2pc Crawl Series Rear Lower Adjustable Control Arms

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.

Jeep Wrangler JK / JKU 07-18 2pc Crawl Series Rear Upper Adjustable Control Arms

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.

Jeep Wrangler JK / JKU 07-18 2pc Heavy-Duty Tie Rod, Drag Link Steering Kit

Tie Rod and Drag Link made from 2" 7075 Aluminum. Tie Rod and Drag Link use Apex Chassis Forged Rod Ends.

Jeep Wrangler JK / JKU 07-18 Crawl Series Front Heavy-Duty Adjustable Track Bar

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.

Jeep Wrangler JK / JKU 07-18 Crawl Series Rear Heavy-Duty Adjustable Track Bar

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.

Google

Reviews of Core 4x4

See all on Google
5.0
★ ★ ★ ★ ★
132 reviews
5 ★
97%
4 ★
2%
3 ★
0%
2 ★
1%
1 ★
0%
BZ
Brandon Zeiders Dec 23, 2025
★ ★ ★ ★ ★ Google
I ordered the jeep xj long arm lift kit. Control arms showed up first they turned out amazing!! Had some issues with the powder coating on the cross member and sent korby and the team at core4x4 an email. They got right on making me another cross member and sending it out. I appreciate all the help they've given me along the way. Very fast response thru emails. Build quality seems to be pretty dang nice!! Can't wait to install it and enjoy it!
EL
Eric Labrum May 27, 2025
★ ★ ★ ★ ★ Google
Best customer service I have ever experienced. They are my go to source do to quality and service
MT
Marcus Torres Jan 15, 2026
★ ★ ★ ★ ★ Google
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.
GM
George Mar Sep 24, 2025
★ ★ ★ ★ ★ Google
Great company. Highly satisfied with Core 4x4 customer service. Had some bushings fall apart around 600 miles from home. Called and spoke with Korby Linscomb on Thursday, late in the afternoon. He was able to get my bushings sent across country overnight at a very reasonable rate. Had me up and running by Friday evening with enough time to enjoy the Great Smoky Mountain Jeep Invasion. Thanks Guys!
Review photo 1
MR
Melanee Raynes Mar 25, 2019
★ ★ ★ ★ ★ Google
Awesome product and service! I even got some of their swag because it looked pretty darn good. I will definitely be going back and would suggest this business to others looking for quality control arms. Buy local!
AP
Ajay Paynter Mar 4, 2026
★ ★ ★ ★ ★ Google
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.
GK
GLENN KOSZKA Apr 27, 2025
★ ★ ★ ★ ★ Google
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 ! ! !
BC
Brad C Mar 24, 2021
★ ★ ★ ★ ★ Google
Outstanding experience! I asked Core to build me a set of custom control arms that were larger/heavier than they normally build. They gladly accepted the challenge and turned out an expertly crafted and super strong product ahead of schedule. Fit and finish are excellent. Spence and Cameron were a pleasure to work with every step of the way. And all of this for a very reasonable price. I highly recommend these guys!
Review photo 1
A
Aaron Mar 23, 2024
★ ★ ★ ★ ★ Google
I have recently come to know Core 4x4 when I purchased a Jeep XJ and was looking for a place that had dedicated XJ suspension and components. Here is what makes them different than most other shops. All of their components are top shelf quality and they back it up if you break any of it. I was able to see their shop when I picked up an order locally and was impressed with their attention to detail and how they assemble and powder coat each part. I had an issue with a shackle and needed the threaded shaft to be shorter. I called in and talked to Kaden and he told me to come by and they would shorten it for me. When I got there, Kaden and Spencer (the owner) met me and talked about options and proceeded to make the right adjustments to fit my XJ. Told me if anything changes in the future and I need additional length, they would take care of me. So what really sets them apart from others is their Customer Service. Try calling in to any other Jeep suspension or part shop and see how they treat you. Been there - done that. Will continue to do business with Core and their team. Getting that kind of service for just a shackle has me thinking I may need to replace my JT components with Core's. Thanks Guys for being helpful good humans!
OJ
Oldgreg jr Mar 23, 2025
★ ★ ★ ★ ★ Google
Good company, they offer well built parts and Great customer service. I had a couple of hang ups with my control arms that I purchased, they were very easy to work with and found the solution to make them work.

Specifications

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 Stock Height, Lifted 1", Lifted 2", Lifted 3", Lifted 4", Lifted 5", Lifted 6", Lifted 7", Lifted 8", Custom length or 1/2 sizes (put desired length in the Order Notes)
Hardware No Hardware, Complete Kit
Drag Link Orientation Factory Mounting (under the knuckle), Drag Link Flip w/ Tapered Sleeve And Drill Bit (over the knuckle)
Stabilizer Clamp Standard Clamp, Hydraulic Assist Clamp
Vehicle Jeep Wrangler JK / JKU (07–18)
Brand CORE 4X4
Series Crawl Series
Note to Core4x4: -
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ARMOR & BODY Choose vehicle for fit
Frame Brackets Coming Soon Mounting + relocation brackets › Panhard Mount Coming Soon Track bar relocation mount › Axle Truss Weld-on axle reinforcement 2 › Rear Bumpers Heavy-duty rear bumpers 1 › Frame Stiffener Coming Soon Frame reinforcement plates for big lifts › Skid Plates Coming Soon Engine · Oil pan · Muffler · Gas tank › Exterior Accessories Bumper guards · Cargo racks · Light mounts 8 › Armor Axle trusses · Diff covers · Crossmembers 22 ›
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Drivetrain Coming Soon Axles · Gearing · Driveshafts ›