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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
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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%
8
89Patriot Jan 22, 2026
Google
Great company! I have used there products consistently with no complaints with quality you can see and feel. From my experience, their customer service is also amazing. Core 4x4 has no issues standing behind their already amazing products and will quickly and professionally solve issues may they arise. I will continue to be a customer.
ST
Sal Torres May 27, 2025
Google
upper control arms look great and went on easy.. only reason I gave 4 stars and not 5 is because of a shipping issue which put my build a week behind. The issue was resolved quickly and painlessly, great customer service. Only time will tell how control arms perform but they look great and like they will go above and beyond control arm demand.
JC
John Cutler Oct 24, 2025
Google
In September 2025, we visited CORE 4x4 in Orem, Utah. CORE 4x4 makes control arms and other similar parts that stiffen the suspension of an off-road 4x4 vehicles, so that the off-road vehicles can travel on more rugged terrain. CORE 4x4 used to share this building with another business, and since this other business has moved elsewhere, CORE 4x4 will continue to expand and grow their business. Good for CORE 4x4 to be a growing company and to expand into the vacant part of the building.
Review photo 1 Review photo 2 Review photo 3 Review photo 4
TR
Tim Reigies Mar 25, 2018
Google
Received the track bar I ordered, product looks extremely strong, thx core 4x4
MD
Mark DiGrappa Apr 27, 2025
Google
First off: Korby, the gentleman that helped me decide on which kit to go with is EASILY the nicest, and most patient person I’ve dealt with, when ordering parts for this build. Second: the quality of the product is INSANE! These parts are so nicely fabricated, then powder coated for extra longevity, and they even offer an aluminum upgrade in some cases (which I went with, to save weight). Having said all of this, the most impressive thing was the lead time. These parts are build to order, and I literally ordered my suspension one week ago, today! Yes, they built, powder coated, packaged, shipped my suspension components (RAM 1500 Track rear trailing arm full set in 7075 aluminum, and front upper control arms), AND they arrived, all within a week! Granted, that I’m only one state away, but WOW!!! One week?! Amazing! So, in sort: excellent products, which arrived excellently packaged (no damage, an boxes not over-stuffed with heavy suspension parts; three boxes total, as opposed to one super heavy one…my back thanks you), super quickly, and customer service that ANY business would be envious of….so, if you’re in the market, absolutely go with Core 4X4!
HK
Harold Kruder Mar 23, 2024
Google
I needed some parts and had to replace 1 lower control arm and their customer service is great. Helped with answering my questions and got parts shipped quickly.
KK
Kevin Kinard Oct 24, 2025
Google
Great product, excellent customer service. I mistakingly ordered a track bar for the wrong year model and Korby helped me out by sending me the correct part that I needed no questions asked. I highly recommend.
RH
R and H H Oct 24, 2025
Google
Top notch company. Mechanic lost bolts that clamp upper control arms. Korby sent out spare bolts no charge. Best customer service I’ve come across in a long time. Only suspension brand I’ll ever use.
PG
Paul Griffin Feb 21, 2026
Google
Great long arm kit with everything else I needed as well! They worked with me to ensure that I was getting an upgraded components kit just like I wanted. Fast shipping with some of the best packaging that I have ever seen. Nothing was scratched or missing and this kit is even more impressive than the videos or website can show. Powder coating looks great with no issues. I would highly recommend CORE 4x4 to anyone looking for a great quality kit.
K
Korosunagi Jul 26, 2025
Google
I broke a grease fitting off in my end link. I thought I was going to have to buy a new one. Reached out to Core 4x4 and wham! bam! They fixed it and sent it back with 2 day shipping. Got it a day early even. If they couldn't fix it they were going to send me a new one. Now that's customer service! They are now a permanent part of my garage. Thank you Core 4x4!

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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