Skip to Content
ADD YOUR JEEP — FIND EXACT-FIT PARTS ›
Back to Complete Kits
SKU: CRL-J-WJ-K8 ★★★★★ (132 reviews)
⬡
LIFETIME WARRANTY
✓
FITS YOUR EXACT VEHICLE
🚚
SHIPS IN 1–3 DAYS
🔧
MADE IN UTAH, USA
From

$ 1,590.97 1590.97 USD $ 1,674.70

$ 1,674.70

More payment options ▾

🔧 Built to order · Ships in 1–3 business days

COLOR 11 colors — pick yours
https://jerdev.core4x4.com/web/image/product.template/1644/image_1920?unique=608eb6f
SKU: CRL-J-WJ-K8
Fits: 1999 - 2004 Jeep Grand Cherokee WJ Add vehicle
Add Vehicle Google 5.0 ★★★★★ (132 reviews)

$ 1,590.97 1590.97 USD $ 1,674.70

$ 1,674.70

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.
  • Hardware
    Choose upgraded hardware if your factory hardware is worn, damaged, or missing.
  • Note to Core4x4:

Select Color to see price and add to cart.

WHAT’S INCLUDED
4
Upper Control Arms
4
Lower Control Arms
2
Front Track Bars
2
Rear Track Bars
4
End Links

4–8 hr install Moderate 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
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.

Complete Suspension Overhaul for Maximum Performance

Revolutionize your Jeep Grand Cherokee WJ’s suspension system with the Crawl Series Ultimate Suspension Kit. Designed for Jeep Grand Cherokee WJ models from 1999-2004, this all-inclusive kit delivers a complete overhaul of your vehicle’s suspension. With unmatched control, flexibility, and adjustability, this kit provides precise axle centering, pinion and caster angle adjustments, and exceptional off-road articulation while maintaining superior on-road comfort.

What’s Included in the Kit?

  • Crawl Series front upper control arms – CRL-J-WJ-FU2
  • Crawl Series front lower control arms – CRL-J-WJ-FL2
  • Crawl Series rear lower control arms – CRL-J-WJ-RL2
  • Crawl Series rear upper A-arm – CRL-J-WJ-AA1
  • Crawl Series front track bar – CRL-J-WJ-FTB1

Key Features and Benefits

  • Comprehensive suspension overhaul – Includes all six control arms, front track bar, and rear upper A-arm, providing full control over suspension geometry, precise alignment, and axle centering.
  • Exceptional flexibility – Equipped with Johnny Joints at all critical points, this kit delivers industry-leading articulation for conquering the toughest off-road terrains.
  • Advanced adjustability – Accommodates lifts from 2 to 6 inches, allowing fine-tuned pinion and caster angle adjustments for optimal driveline performance, axle centering, and enhanced handling.
  • Unmatched durability – Built with .313" wall DOM tubing and premium materials to ensure long-lasting performance in demanding off-road conditions.

Complete Suspension Transformation

The inclusion of the rear upper A-arm makes this the ultimate suspension solution. Combined with adjustable control arms and a front track bar, this setup provides unmatched control over axle positioning, caster adjustments, and pinion angle alignment. With improved articulation and stability, you’ll enjoy a smoother ride on-road and extreme flexibility off-road, making this kit perfect for Jeep enthusiasts looking to push their vehicle’s performance to the limit.

Two-Stage Powder Coating for Maximum Protection

Each component undergoes a two-stage powder coating process for superior durability and corrosion resistance. A zinc primer base coat enhances rust protection, while the durable top coat—available in 10 color options—adds long-lasting resilience and a custom aesthetic.

Proudly Made in the USA

Manufactured in Orem, UT, the Crawl Series Ultimate Suspension Kit is built with the highest standards of American craftsmanship. By sourcing materials locally and maintaining strict quality control, we ensure every component meets the highest durability and performance standards.

Optional Hardware Upgrade

This kit installs easily using factory hardware. For vehicles with rusted or stubborn bolts, optional Grade 8 hardware kits are available separately to ensure a seamless installation.

Final Thoughts

The Crawl Series Ultimate Suspension Kit is the premier solution for Jeep Grand Cherokee WJ owners seeking a full suspension transformation. With superior adjustability, off-road articulation, and long-lasting durability, this kit ensures optimal performance and reliability in any terrain. Upgrade today and experience total suspension control like never before!


Make Model Submodel Years
Jeep Grand Cherokee 1999 - 2004

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

Master Rebuild kit for CRL-J-WJ-K8 $ 315.00
Master Rebuild kit for CRL-J-WJ-FL2 $ 84.00
Master Rebuild kit for CRL-J-WJ-RL2 $ 84.00
Master Rebuild kit for CRL-J-WJ-AA1 $ 63.00
Master Rebuild kit for CRL-J-WJ-FTB1 $ 42.00
Master Rebuild kit for CRL-J-WJ-FU2 $ 42.00

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.
Series Crawl Series
Lift Size 6"+ or 2"-6"
Hardware No Hardware or Complete Kit

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
Google

Reviews from Google

See all on Google
5.0
★ ★ ★ ★ ★
132 reviews
5 ★
97%
4 ★
2%
3 ★
0%
2 ★
1%
1 ★
0%
OJ
Oldgreg jr Mar 23, 2025
★ ★ ★ ★ ★ Google
Good company, they offer well built parts and Great customer service. I had a couple of hang ups with my control arms that I purchased, they were very easy to work with and found the solution to make them work.
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.
CL
Colten Lockwood Mar 25, 2019
★ ★ ★ ★ ★ Google
Recieved warrenty exchanges for my control arms last night couldnt be happier!!! Lets talk about the arms tho! Great quality arms in multiple styles and colors!!! I purchased the teir 3 short arns for my 98 xj. I can say that they setoff nicely so my 35 inch tires do not rub! As long as you can get a photo or video of broken hardware core will take care of you. The body of the arm is bulletproof. However make sure to maintain and grease the joints regularly as with any greaseable joint and they shouldkast forever. I had a few problems arise a year after purchase and after some troubleshooting spence was able to help get me the correct parts to get back on the road. I recommend this setup to any and all jeepers looking to get away from the stock arm setup. Alltogether i am Very happy with the performace of my control arms!!!! Mechanic and bodyman of 12 years and my first choice for quality control arms!!
SH
Shawn Hooten Apr 27, 2025
★ ★ ★ ★ ★ Google
Great products, shipped the next day during a big sale event. Core 4x4 gets it right and gets it done! Thank you all.
JT
Jay Taylor May 27, 2025
★ ★ ★ ★ ★ Google
Had a worn out set of rear upper control arms on my TJ. These were old rubicon express long arms. can’t buy replacements and no one makes a direct fit replacement. Talked with Korby at core off road sent some measurements and photos and a week later new arms showed up. Packaging was perfect fit was perfect. Would highly recommend giving these guys a call.
AH
Abbey Hiett Mar 25, 2019
★ ★ ★ ★ ★ Google
Company finally made things right
WT
William Turton Nov 23, 2025
★ ★ ★ ★ ★ Google
Finally a company with a great product and customer service to match. I changed my order last minute from short arms to long arms. The lift is extremely well built. Korbey was awesome! Highly recommend Core 4x4
MM
MIKE (Mike the Mechanic) Jul 26, 2025
★ ★ ★ ★ ★ Google
Amazing company and customer service!!!! I messed up on my order and the fixed it immediately. Would definitely recommend them. Can't wait to hit the trails with their product.
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.
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.

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.
Lift Size 6"+, 2"-6"
Hardware No Hardware, Complete Kit
Vehicle Jeep Grand Cherokee WJ (99–04)
Brand CORE 4X4
Series Crawl Series
Note to Core4x4: -
Tags
Tags
Add your vehicle ›
Loading…
Add vehicle
SHOP BY VEHICLE
Home