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LIFETIME WARRANTY
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MADE IN UTAH, USA
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3,441.33 3441.33 USD 3,622.45

3,622.45

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🔧 Built to order · Ships in 1–3 business days

COLOR 11 colors — pick yours
https://jerdev.core4x4.com/web/image/product.template/1659/image_1920?unique=608eb6f
SKU: CRL-J-JK-K16
Fits: 2007 - 2018 Jeep Wrangler JK / JKU Add vehicle

3,441.33 3441.33 USD 3,622.45

3,622.45

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.

WHAT’S INCLUDED
4
Upper Control Arms
4
Lower Control Arms
2
Front Track Bars
2
Rear Track Bars
4
End Links

4–8 hr install Moderate 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
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

Warranty facts, not marketing language.

vs. MetalCloak

Their “lifetime” language refers to their service model. Actual parts warranty: 1 year. Ours: lifetime.

vs. Teraflex

Skip a maintenance interval? Their warranty voids. Ours doesn’t.

vs. Clayton Off Road

Clayton warrants their Johnny Joints for 90 days. We cover ours for life.

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.

What's Included in the Kit

  • Crawl Series Front Upper Control Arms (CRL-J-JK-FU2)
  • Crawl Series Front Lower Control Arms (CRL-J-JK-FL2)
  • Crawl Series Rear Upper Control Arms (CRL-J-JK-RU2)
  • Crawl Series Rear Lower Control Arms (CRL-J-JK-RL2)
  • Crawl Series Front Track Bar (CRL-J-JK-FTB1)
  • Crawl Series Rear Track Bar (CRL-J-JK-RTB1)
  • Crawl Series Front Sway Bar End Links (CRL-J-JK-FEL2)
  • Crawl Series Rear Sway Bar End Links (CRL-J-JK-REL2)
  • 2.5-Ton Heavy Duty Aluminum Steering Kit (ST-J-JK-SK2)

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.

Upgrade Today!

The Crawl Series Total Suspension Control Kit (CRL-J-JK-K16) is the ultimate all-inclusive solution for transforming your Jeep Wrangler JK’s suspension and steering. With unmatched articulation, incredible durability, and seamless integration of all components, this kit delivers the flexibility and performance needed for extreme off-road adventures and daily on-road driving. Just add your preferred springs and shocks, and your Jeep is ready for anything. Upgrade today and experience the quality, reliability, and precision of American-made craftsmanship.

 

Make Model Submodel Years
Jeep Wrangler 2007 - 2018

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

Select your lift size in Step 1 — the kit ships with the correct geometry for that height. If you’re running a non-standard setup, call us before ordering and we’ll confirm compatibility.

Death wobble is a geometry problem, not just worn parts. Cruise Series corrects caster angle and eliminates the flex points that let shimmy start. Replacing one part at a time delays the fix — this replaces the geometry.

Yes, if you’ve done a lift kit before. Full-day project. Watch the complete JT install walkthrough on our YouTube channel — most owners wrap it in a day. Any off-road shop can run it if you’d rather have it done.

Any non-wear component fails — we replace it. No mileage cap. No maintenance intervals to track. No fine print about voiding if you miss a service. Lifetime means lifetime.

Teraflex’s lifetime warranty voids if you miss a maintenance interval. MetalCloak’s actual parts warranty is 12 months — their “lifetime” language refers to their service program. No conditions here.

See It Installed

Install videos and build guides on our YouTube channel.

Watch more installs on YouTube
Google

Reviews from Google

See all on Google
5.0
132 reviews
5
97%
4
2%
3
0%
2
1%
1
0%
MT
Ma TheMeatLoaf Mar 23, 2024
Google
Their website estimated 2 days to get my parts but actually took 11. No communication to let me know what’s going on. Parts were missing. Some days they answer questions, some they don’t. Didn’t let me know I’d have to alter stock bolts to fit their parts. All around just seems like they don’t care.
TW
Travis Walker Sep 24, 2025
Google
I have nothing but great things to say about this company and their customer service. If you like American made products backed by warranty and amazing customer support, this is the company for you. I have a Lexus GX470 and love their rear control arms.
P
Paul Mar 24, 2023
Google
I've been having trouble with the track bar (on my 2nd gen Dodge) since I installed the 3rd gen Synergy adapter bracket and a 3rd gen stock bar.. oddly, they call it a '3rd gen bracket' and the stock 3rd gen bar doesn't quite fit, making contact with the bracket. I had attempted to clearance the bracket but it was still making contact and I could feel it over large bumps. I reached out to a lot of companies, but Core 4x4 offered to make a custom bar for the application with adjustability and dual Johnny joints. The first pass on it didn't work but they sent me out another passenger side end that made it fit incredibly well. This was all done solely over email/descriptions/pictures/measurements. Bar is super high quality and heavy duty, made in the US by a family owned company and carries a lifetime warranty. The customer service was responsive and superb, and the price was a lot less than I expected.
AH
Abbey Hiett Mar 25, 2019
Google
Company finally made things right
TH
Todd Hume Jan 22, 2026
Google
Their products are great but the service is even better!! Thanks Korby.
WT
William Turton Nov 23, 2025
Google
Finally a company with a great product and customer service to match. I changed my order last minute from short arms to long arms. The lift is extremely well built. Korbey was awesome! Highly recommend Core 4x4
TM
T Mac Mar 23, 2026
Google
CORE 4X4 Company produces/manufactures exceptional products. My rear upper and lower control arms and rear track bar were powder coated custom Fox “Shock Orange” for my 2024 Bronco Wildtrak. OEM looks minimal compared to the CORE 4X4 control arms. Plus they’re adjustable, serviceable and rebuildable. Shipment was very fast and packaging used custom foam wrapped around the arms and heavy duty boxes. Not even UPS could damage. Korby L. was great to work with and responded quickly with emails and product information. Great products. Great people from the State of Utah. All Made in the USA. 5 Stars!!!
C
Chris Oct 24, 2025
Google
Great product for a good price. Customer service is top notch, I had an issue which was self cause and Core 4x4 helped me out even though it was my own fault. Would definitely recommend and use them again.
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 ! ! !
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.

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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