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Jeep Grand Cherokee WJ 99-04 Crawl Series Rear Upper A-Arm w/ Bracket

SKU: CRL-J-WJ-AA1
Fits: 1999 - 2004 Jeep Grand Cherokee WJ Add vehicle

352.53 352.53 USD 414.74

414.74

Starting at $110/mo or 0% APR with . See if you qualify

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.
  • Hardware
    Choose upgraded hardware if your factory hardware is worn, damaged, or missing.
  • Series
    Cruise: daily driving and light off-road. Camp: overlanding. Crawl: aggressive rock crawling.
  • Note to Core4x4:

Select Color to see price and add to cart.

4–8 hr install Moderate Alignment recommended Lifetime warranty on all non-wear items Made In USA

Optimized Rear Suspension Control

Upgrade the performance, adjustability, and durability of your Jeep Grand Cherokee WJ (1999-2004) with the Crawl Series Rear Upper Adjustable A-Arm. Designed for lifted Jeeps from 2 to 6 inches, this heavy-duty A-arm delivers precise pinion angle adjustment, enhanced articulation, and unmatched strength for a smoother, more controlled ride both on and off the road.

What's Included?

  • Crawl Series Rear Upper Adjustable A-Arm w/ Bracket (CRL-J-WJ-AA1)

Key Features Benefits

  • Precision Adjustability – Fully adjustable design allows for precise pinion angle correction, reducing vibration and improving drivetrain alignment for optimal performance.
  • Heavy-Duty Construction – Built with 1.25-inch threads and .25-inch wall DOM tubing, ensuring maximum strength and long-term durability for extreme off-road conditions.
  • Advanced Bracket Design – Includes a laser-cut 1/4-inch steel axle bracket with multiple height settings for customized suspension tuning and improved driveline geometry.
  • Superior Articulation Flexibility – Features RockJock Johnny Joints at both ends for bind-free articulation, increased suspension travel, and exceptional durability, far exceeding factory ball joints.

Two-Stage Powder Coating

Every A-Arm undergoes a two-stage powder coating process for superior corrosion resistance and longevity. The zinc primer base coat provides a strong anti-rust barrier, while the durable top coat—available in 10 custom colors—lets you match your build’s style while ensuring maximum protection.

Made in the USA

Proudly manufactured in Orem, UT, the Crawl Series Rear Upper Adjustable A-Arm is a testament to American craftsmanship, designed to outperform and outlast other aftermarket options.

In Conclusion

For lifted Jeep Grand Cherokee WJs, the Crawl Series Rear Upper Adjustable A-Arm is the ultimate solution for axle centering, pinion angle correction, and maximum articulation. Whether you're tackling rugged trails or cruising the highway, this upgrade ensures superior suspension control, durability, and off-road capability. Upgrade today and take your Jeep’s performance to the next level.


Make Model Submodel Years
Jeep Grand Cherokee 1999 - 2004

Each rebuild kit includes all necessary components to replace and restore wearable parts.

Vehicle Jeep Grand Cherokee WJ (99–04)
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.
Hardware No Hardware or Complete Kit
Series Crawl Series

See It Installed

Install videos and build guides on our YouTube channel.

Watch more installs on YouTube
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Reviews from Google

See all on Google
5.0
132 reviews
5
97%
4
2%
3
0%
2
1%
1
0%
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.
RC
Ryan Colligan Mar 4, 2026
Google
I have nothing but good things to say about Core 4x4. I have the crawler series on my JKU and we take it all over the place. These parts handle everything we throw at them.
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.
CM
Cameron Masters Mar 24, 2023
Google
Absolutely incredible family owned business. I asked to pick up my order since I’m local and they came in on a weekend to accommodate. Had to make some adjustments to parts and took the time to make sure it was perfect. Parts are incredible quality. If you have a Jeep, do not hesitate to support this local business.
CL
Cade Leith Mar 23, 2024
Google
Have full upper/lower CA set on both front and rear axles on a 96 ZJ. These are the rubber bushing sets not joint sets. I have beat the hell out it in the Nevada desert for 2 years and has been great. I don’t go fast but I do articulate suspension a lot. Super solid and haven’t any issues. Just inspected the entire set recently due to some banging under it. Turns out the banging is lower rear shock bushings. Inspected each CA along the way nothing. Aside from dirt and obviously winter roads and what not still in excellent condition, bushings are solid like the day they were installed. I’ll add that I’m about tapped on a short arm at 4.25(less with settle) so the front CA’s get beat on just from that, still they’re like new. Paint is great condition, this set is red. I would definitely buy again. Another plus for me, Utah isn’t local necessarily, but it’s nice to support businesses closer to me.
RH
Roger Hooks Jun 26, 2025
Google
2018 Ram 2500 Rear Control Arms and Rear track Bar been running for about a year, Great Solid Products and great one on one customer service, same day response with issue resolved! Thanks Korby!
MV
Mr. V Mar 24, 2021
Google
Good quality parts, much stronger than stock
Z
Zion Sep 24, 2025
Google
Every product I have received from them has been nothing short of fantastic. Korby in Customer service went above and beyond to help me fix my own mistake. I cannot reccomend them enough.
GN
Glenn Nowosad Jan 22, 2026
Google
I just finished installing the Peak 2.0 Front Suspension system with the Core 4x4 Blue Tacoma Rear Suspension system on my 2024 TRD Offroad Premium Tacoma. The two upgraded suspension systems really made a difference in how the ride feels, whether we’re off-road or on the road. A big thank you to Korby and the team at Core 4x4 for their support and for getting the shipping sorted out so quickly!
AL
Aaron Lake Apr 27, 2025
Google
Korby was a great help with getting me a set of leaf springs for my Cherokee. Great customer service and an awesome product all made in the USA. Proud to support and rock their parts on my vehicle. 👍 …
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