Why Builders Choose CORE 4X4
Warranty facts, not marketing language.
Their “lifetime” language refers to their service model. Actual parts warranty: 1 year. Ours: lifetime.
Skip a maintenance interval? Their warranty voids. Ours doesn’t.
Clayton warrants their Johnny Joints for 90 days. We cover ours for life.
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
Reviews from Google
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. |
| Hardware | No Hardware, Complete Kit |
| Vehicle | Jeep Grand Cherokee WJ (99–04) |
| Brand | CORE 4X4 |
| Series | Crawl Series |
| Note to Core4x4: | - |
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