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.
Conquer Any Terrain with the Crawl Series Lift Kit
Transform your Jeep JK Wrangler into the ultimate off-road machine with Core4x4’s Crawl Series Lift Kit. Designed for extreme off-roading, this comprehensive kit delivers unparalleled strength, precision, and durability to tackle even the most challenging trails with ease.
What’s Included?
- Front and Rear Triple Rate Coil Springs (4)
- (Optional) Front and Rear High-Performance Shock Absorbers (4)-Make Selection Above
- Crawl Series Adjustable Control Arms (Front and Rear) (8)
- Crawl Series Adjustable Track Bars (Front and Rear) (2)
- Crawl Series Extended Sway Bar End Links (Front and Rear) (4)
- Extended Brake Hoses (4)
- Extended Front and Rear Bump Stops (4)
- Raised Rear Track Bar Bracket (1)
- Installation Hardware
Key Features Benefits
- 3.5" Lift for Extreme Off-Roading – Gain significant ground clearance to accommodate larger tires and navigate rugged terrain with ease.
- Heavy-Duty Adjustable Control Arms – Includes all 8 Crawl Series adjustable control arms, providing maximum durability and precise suspension articulation.
- Adjustable Front and Rear Track Bars – Ensures optimal axle alignment and stability, improving handling during extreme off-road conditions.
- Triple Rate Coil Springs – Designed for unmatched comfort, stability, and superior ride quality across all terrains.
- High-Performance Shock Absorbers – Specifically matched to the lift height for enhanced damping control, ensuring a smooth, controlled ride.
- Extended Brake Hoses – Accommodates increased suspension travel while maintaining reliable braking performance.
- Extended Sway Bar End Links – Improves handling and stability, ensuring better control on and off the trail.
- Extended Bump Stops Raised Rear Track Bar Bracket – Protects suspension components during extreme compression and improves roll center for enhanced stability.
Two-Stage Powder Coating for Maximum Protection
All components undergo a two-stage powder coating process for superior durability and corrosion resistance. A zinc primer base coat provides rust protection, while a durable topcoat is available in 10 color options to match your build.
Made in the USA
Proudly designed, engineered, and manufactured in Orem, UT, ensuring superior craftsmanship, strict quality control, and long-term reliability.
Complete Hardware Included
This kit comes with all necessary installation hardware, eliminating the need for additional purchases.
Conclusion
The CORE 4X4 Crawl Series Lift Kit (CMP-JK-LK3.5-CRL) is the ultimate suspension upgrade for Jeep JK Wrangler owners who demand extreme off-road performance, durability, and articulation. Upgrade today and experience next-level control, stability, and ride quality on the toughest trails!
Important Notes:
When using this lift kit with a factory front driveshaft, contact between the driveshaft and exhaust is inevitable-leading to failure of the factory driveline. Exhaust spacers can prolong the life of the factory shaft, but we recommend upgrading to an aftermarket driveshaft to permanently fix this issue.
| 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 Light Green 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 Kit Steering Upgrade | No or Yes, include 2.5 ton steering upgrade with included front track bar bracket and flipped drag link. |
| Lift Kit Steering Stabilizer Clamp | Standard Clamp or Hydraulic Assist Clamp |
| JK Long Arm Upgrade for Lift Kit | No thanks-stick with short arms. or Yes, upgrade to long arms for full width front axle (straight aluminum lowers) or Yes, upgrade to long arms for factory width front axle (bent steel lowers) |
| Shocks | Source My Own Shocks or Fox 2.0 Performance Series Shock Package or RockKrawler 2.25" RRD Shock Package |
| Number of Doors | 2-Door or 4-Door |
| Series | Crawl Series |
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
Reviews from Google
5.0
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132 reviews
DW
Darin Wuebbels
May 27, 2025
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Thanks for the fabulous customer service. Your products and customer service are first class. I highly recommend these guys. Excellent experience.
MT
Marcus Torres
Jan 15, 2026
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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.
NM
Noah Myers
Mar 23, 2024
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I contacted these guys on a Saturday through email and needed some control arms by the following weekend, Spence got back with me and told me he would make sure the order got shipped out on Monday, they got busy and wasn’t able to ship the package out so he got back with me that evening and upgraded my shipping for free and shipped out the next day, only because he told me he’d make sure I’d have them by the weekend! This company sticks to their word! The customer service from these guys are unmatched and they will have another lifetime customer here!
DR
David Rogers
Aug 25, 2025
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Ive had the front adjustable control arm kit in bright green for my 1996 ZJ.
Ive had the kit for about a year now and i have to say, im extremely impressed, over 1000 miles off-road and roughly 20,000 miles on the highway. These control arm kits for any vehicle built by core 4x4 are well worth the money, just be aware thereight be some minor scatches or chips from shipping ( but who should care about that if you're beating the crap out of em' they way they were built and designed for)
JA
Jonathan Aguilera
Jan 22, 2026
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Great experience with Core 4x4! I purchased some suspension parts for my dad's 98 Jeep TJ. The products they make are super durable and look even better in person. Attention to detail and overall superior quality. The staff at Core 4x4 is super helpful also, Korby has been great. Updating me on the status of my order and sending me tracking numbers as well. Thank you all at Core 4x4, keep up the amazing work!
CW
Cody Whitlock
Sep 24, 2025
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10/10 overall experience, shipping, customer service, and such a great product!
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Norb Pranger
Oct 24, 2025
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Not sure where to start, Products or Service or Warranty.
Products: I found Core4x4 through a very respected YouTuber in the Jeeping community. I purchased an entire set of Core4x4 Control Arms three years ago and have beat the daylights out of them and they are still in great condition. Now, I purchased another Jeep, this time for my daughter and bought yet another set of Control Arms because I know that these things can take a beating and stand up to it. I plan on replacing more parts on this TJ and my JL and will continue to buy from Core4x4.
Service: This isn't some huge name conglomerate that treats you like you're just another customer. They are quick with responses and will always make things right should something be a problem. Oh and the quickness in which they ship their products is unmatched. I bought these CAs for my TJ on Thursday, I received them on Monday. Most other manufacturers will tell you weeks, they had them to me in 2 shipping days.
Warranty: Seriously, a lifetime warranty? Yes please. Nothing more to say.
I can't say enough about how great of a company this is. I've even spoken to the owner through email a few years back on some questions that I had. Support small American built businesses.
P.S. Core 4x4, feel free to make me an ambassador and send me some swag :) .
DT
Dean Tk421
Feb 21, 2026
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I purchased the Jeep WJ control arms Camp series over a year ago. Very pleased and impressed. Easy installation and solid build. Bracket broke for rear upper control arm, they redesigned it to be more robust and sent me a new one with hardware, honoring their guarantee!
TW
Travis Walker
Sep 24, 2025
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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.
GC
Grant Chaisson
Jun 26, 2025
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These guys are awesome!! They have helped me build multiple jeeps from zjs to mjs and now with my lj build they all ways impress.
There products are the best on the market in my eyes. The best part about it all is it's all made right here in american and shipped anywhere in the world 🌎 .
Don't think twice when your looking for control arm or lift kits for your vehicle if these guys sell it BUY IT!!!
Accessories & Add-ons
Steering Stabilizer
FOX 2.0 IFP Stabilizer Jeep Wrangler JK
$ 229.95
8pc Kit
Jeep Wrangler JK / JKU 07-18 8pc Crawl Series Adjustable Control Arm Kit
$ 1,574.95
10pc Kit
Jeep Wrangler JK / JKU 07-18 10pc Crawl Series Adjustable Control Arm, Track Bar Kit
$ 1,994.95
12pc Kit
Jeep Wrangler JK / JKU 07-18 12pc Crawl Series Adjustable Control Arm, Track Bar, Steering Kit
$ 3,097.45
16pc Kit
Jeep Wrangler JK / JKU 07-18 16pc Crawl Series Adjustable Control Arm, Track Bar, Steering, End Link Kit
$ 3,622.45
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Specifications
| Color | Black, Blue, Charcoal, Green, Light Green, 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 Kit Steering Upgrade | No, Yes, include 2.5 ton steering upgrade with included front track bar bracket and flipped drag link. |
| Lift Kit Steering Stabilizer Clamp | Standard Clamp, Hydraulic Assist Clamp |
| JK Long Arm Upgrade for Lift Kit | No thanks-stick with short arms., Yes, upgrade to long arms for full width front axle (straight aluminum lowers), Yes, upgrade to long arms for factory width front axle (bent steel lowers) |
| Shocks | Source My Own Shocks, Fox 2.0 Performance Series Shock Package, RockKrawler 2.25" RRD Shock Package |
| Number of Doors | 2-Door, 4-Door |
| Vehicle | Jeep Wrangler JK / JKU (07–18) |
| Brand | CORE 4X4 |
| Series | Crawl Series |
| Note to Core4x4: | - |
| Tags | |
|---|---|
| Tags | |
