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6pc Crawl Series Heavy-Duty Rear Adjustable Long Arm Upgrade Kit

Jeep Grand Cherokee ZJ 93-98 6pc Crawl Series Heavy-Duty Rear Adjustable Long Arm Upgrade Kit
Pick your vehicle to confirm fit

892.46 892.46 USD 1,049.95

1,049.95

(Save 15%)

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Order today — ships within 1–3 business days
Enter ZIP for arrival estimate 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
COLOR 12 colors — pick yours
https://dev.core4x4.com/web/image/product.template/1565/image_1920?unique=edc8f61

6pc Crawl Series Heavy-Duty Rear Adjustable Long Arm Upgrade Kit

Jeep Grand Cherokee ZJ 93-98 6pc Crawl Series Heavy-Duty Rear Adjustable Long Arm Upgrade Kit
SKU: CRL-ZJ-RLAK4
Pick your vehicle to confirm fit

892.46 892.46 USD 1,049.95

1,049.95

(Save 15%)

COLOR 12 colors
Black Blue Charcoal Green LightGreen 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.

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.
  • Note to Core4x4:

Select Color to see price and add to cart.

Order today — ships within 1–3 business days
Enter ZIP for arrival estimate change
Order by 3:00 PM MT today — we'll start tomorrow
See full timeline

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

Unmatched Off-Road Performance On-Road Comfort

Upgrade your Jeep Grand Cherokee ZJ with the Crawl Series Rear Long Arm Upgrade Kit, engineered to maximize suspension travel, axle stability, and ride quality. Designed for aggressive off-road performance and smooth highway driving, this kit transforms your ZJ’s suspension geometry, improving articulation and eliminating binding, even in extreme conditions.

Key Features and Benefits

  • Heavy-Duty Construction – Built from 5/16” wall DOM tubing, these long arms deliver exceptional strength and articulation compared to factory and short-arm setups.
  • Optimized Suspension Geometry – The longer control arms allow for a smoother, more controlled axle range of motion, improving traction and reducing stress on suspension components.
  • Precision-Engineered Brackets – 1/4” laser-cut and precision-bent steel brackets ensure a perfect fit and rock-solid durability.
  • Increased Ground Clearance Travel – Allows for maximum articulation without limiting suspension movement.
  • Full Bolt-On Installation – No welding required—bolt-on design makes installation straightforward with included hardware.

Two-Stage Powder Coating for Maximum Protection

Each component in this kit undergoes a two-stage powder coating process for long-lasting durability and corrosion resistance.

Zinc Primer Base Coat – Prevents rust and protects against harsh environmental conditions.

Durable Top Coat – Available in 10 custom colors for added protection and personalization. Custom colors available upon request.

Made in the USA

Manufactured in Orem, UT, the Crawl Series Rear Long Arm Upgrade Kit is built to the highest standards of American craftsmanship. By choosing CORE 4X4, you’re investing in high-quality, American-made products designed to withstand the most demanding conditions.


  • Vehicle Fitment: Jeep Grand Cherokee ZJ 93-98 – A rear long-arm suspension transformation that enhances articulation, axle stability, and ride quality, making your ZJ unstoppable on and off the trail.

  • CORE Advantage: This true 4-link rear long-arm system eliminates the binding and limitations of short-arm setups, allowing for smoother suspension movement, increased down travel, and enhanced off-road flexibility.

  • Adjustability: Corrects pinion angle, reduces driveline vibrations, and ensures proper axle alignment at all lift heights (0–6 inches), optimizing both off-road performance and on-road handling.

  • Construction: Heavy-duty 5/16” wall DOM tubing combined with precision-engineered 1/4” plate steel brackets for maximum durability, ensuring reliability in extreme conditions.

  • 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

Rear Lowers 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. 

Rear Uppers 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.

Make Model Submodel Years
Jeep Grand Cherokee 1993 - 1998

Construction & Materials

Rear Lowers 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. 

Rear Uppers 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.

Vehicle Jeep Grand Cherokee ZJ (93–98)
Brand CORE 4X4
Color Black or Blue or Charcoal or Green or LightGreen 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.
Series Crawl Series
Lift Size 0" — 6" or 6"+
Placement on Vehicle Rear Upper, Rear Lower, 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.

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Reviews of Core 4x4

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5.0
132 reviews
5
97%
4
2%
3
0%
2
1%
1
0%
LS
Leonard Smith Jan 22, 2026
Google
I don’t write reviews often, but Core 4x4 absolutely earned this one. I recently ordered leaf spring mounts and realized after the fact that I messed up my order. Totally my mistake. Instead of giving me the runaround or pointing at a return policy, Core 4x4 emailed me back and forth, worked through exactly what I was doing with my build, and made sure I ended up with the correct parts. That kind of customer service is rare these days — especially in the off-road world where a lot of companies stop caring once the order is placed. The parts themselves are exactly what you hope for: solid, well-made, confidence-inspiring hardware that looks like it belongs under a vehicle that actually gets used. You can tell these are designed by people who understand suspension geometry and real-world abuse, not just CAD screenshots. Mistakes happen — especially on custom or modified builds — and Core 4x4 handled mine like pros. Fast responses, clear communication, and a genuine effort to help me get it right. If you’re on the fence: don’t be. Core 4x4 is the kind of company you want backing your build — the kind that treats customers like fellow enthusiasts, not order numbers.
J
Justin Mar 24, 2021
Google
Small business, family owned, made in the USA, lifetime warranty. Purchased Tier 3 control arms and rear track bar for a 2006 Jeep LJ. Simple website and easy to contact over phone and email. I had some technical questions and they were happy to answer them. They allow local pickup and were built to order same week. The order was wrapped and ready when I walked in and even gave a tour of the shop. They abrasive blast all raw materials to achieve a better surface profile for powdercoat to adhere and create a smooth, durable finish. I also noticed several CNC machines and a robotic welder they use for all their parts. A small outfit with a robotic welder? Their concern for quality is obvious and it shows in the parts they make. Very impressed. Happy to do business with these guys.
Review photo 1
CM
Craig MacIver May 27, 2025
Google
Got the CAMP version of adjustable control arms and track bars for our 03 TJ with a 3” lift and 33x10.5 KO 2’s. Super beefy bars, great fit and adjustability. Friendly advice and support from Korby at CORE 4X4. Good follow up as well. The ride quality is great as well as the handling. I think it all looks pretty good as well.
Review photo 1 Review photo 2 Review photo 3 Review photo 4
MH
mark hinz Mar 2, 2026
Google
Went above and beyond to get the parts we needed to complete our customers build for Moab Easter safari cant thank you enough for all your hard work and efforts Thank you and look forward to working with you in the near future
RG
Robert Van Gorder Apr 27, 2025
Google
Amazing service. Bought a track bar through Americantrucks.com and they sent it with the wrong size bushing sleeve. Korby at Core 4x4 was quick to get me the correct size and very responsive. Will definitely be using more of their stuff.
JW
Jonathan Word Aug 25, 2025
Google
Beefy parts made and painted well, very fair pricing for what you get, and fantastic customer service to boot. Easily my favorite place to get suspension parts.
E(
Eric Hernandez (savagefit) May 27, 2025
Google
The whole process was quick and painless. The products are top tier and when I reached out them for package update info, Korby Linscomb was very responsive, and got me the answers I needed the same day. Even when I emailed back to some additional info, he sent what I was looking for that same day. I love core 4x4 and will be giving them my business from now on.
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
DD
DANIEL DUSSAULT Nov 23, 2025
Google
Very beefy items for a very reasonable price.  Personally have CORE rear track bar and all upper control arms for my 04 Jeep TJ.  Had a slight issue with control arm length and they went above and beyond to swap jam nuts to get me where I needed to be.  Really have to appreciate a company like this.
JL
John Luna Nov 23, 2025
Google
Great team, and help to support my jeep and provide best stuffs

Specifications

Color Black, Blue, Charcoal, Green, LightGreen, 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 Size 0" — 6", 6"+
Vehicle Jeep Grand Cherokee ZJ (93–98)
Brand CORE 4X4
Series Crawl Series
Note to Core4x4: -
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