Skip to Content
Shop
Will this fit your rig?
CORE 4X4 SKU: CRL-J-JL-RS4-MRK

Master Rebuild kit for CRL-J-JL-RS4

Master Rebuild kit for CRL-J-JL-RS4
$147.84 $168.00 Save $20

CRUISE from $106 · CAMP $127

$ 147.84 147.84 USD $ 168.00

$ 168.00

Not Available For Sale
Save $ 20.16

Checking shipping cost… Check shipping
Enter ZIP for arrival estimate Delivery date by ZIP
Order by 3:00 PM MT today — we'll start tomorrow
See full timeline
100% bolt-on, no welding Made in USA · Orem, Utah
Talk to an Expert: 385-375-2104
1
https://dev.core4x4.com/web/image/product.template/27136/image_1920?unique=04d29e5
CORE 4X4

Master Rebuild kit for CRL-J-JL-RS4

Master Rebuild kit for CRL-J-JL-RS4
Will this fit your rig?

$ 147.84 147.84 USD $ 168.00

$ 168.00

Not Available For Sale
Save $ 20.16

Select Color to see price and add to cart.

100% bolt-on, no welding Made in USA · Orem, Utah
Talk to an Expert: 385-375-2104
Checking shipping cost… Check shipping
Enter ZIP for arrival estimate Delivery date by ZIP
Order by 3:00 PM MT today — we'll start tomorrow
See full timeline

Lifetime warranty on all non-wear items United States

Made in USA Orem, Utah
You break it, we replace it Warranty on non-wear items
10 Colors In-house powder coat
Fully Adjustable 0-6" of lift
3 X-Series Options Only Core 4x4

Product Details

Make Model Submodel Years
Jeep Wrangler 2018–Present

Forged Johnny JointJoints
1.75" OD lowers / 1.50" OD uppersTubing
5/16" DOMWall
Periodic greasingMaintenance

Construction & Materials

Jeep Wrangler JL / JLU 18+ 4pc Crawl Series Rear Adjustable Control Arm Kit

Rear Lower Control Arm Built With 1.75” OD 5/16” Wall DOM. Forded Johnny Joints on both adjustable ends with 1.25” x 12 TPI - 2.625” long threads.

Rear Upper Control Arm 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.

Everything you need to refresh your suspension.

This rebuild kit includes all the essential components needed to replace common wear items and restore performance.

CE-9110RK × 4

CE-9110NRK × 4

Google

Store reviews on Google

See all on Google
5.0
★ ★ ★ ★ ★
132 reviews
5 ★
97%
4 ★
2%
3 ★
0%
2 ★
1%
1 ★
0%
MR
Melanee Raynes Mar 25, 2019
★ ★ ★ ★ ★ Google
Awesome product and service! I even got some of their swag because it looked pretty darn good. I will definitely be going back and would suggest this business to others looking for quality control arms. Buy local!
JM
Jay Miller Jul 26, 2025
★ ★ ★ ★ ★ Google
I purchased a upper and lower set of control arms from core 4x4 they came early then expected and seem to be very nice quality I ran into a complication installing them and emailed them my question I was expecting to get the response maybe the next day because it was after hours I got a response in about a few minutes which allowed me to finish the project that day I super appreciate that, the products are good strong lifetime warranty and their customer service is top notch
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.
DD
Dmitriy D May 27, 2025
★ ★ ★ ★ ★ Google
Installed rear and upper control arms and track bar on my 3rd Gen 4RUNNER to align rear axle and restore factory wheel base after 3.5" lift. Car drives better than New! Improved handling cornering and overall driving. Very solid and high quality made product. Support is outstanding. Shipping extremely fast. Thank you so much. I wish you will have something new for my car.
Review photo 1
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.
GM
George Mar Sep 24, 2025
★ ★ ★ ★ ★ Google
Great company. Highly satisfied with Core 4x4 customer service. Had some bushings fall apart around 600 miles from home. Called and spoke with Korby Linscomb on Thursday, late in the afternoon. He was able to get my bushings sent across country overnight at a very reasonable rate. Had me up and running by Friday evening with enough time to enjoy the Great Smoky Mountain Jeep Invasion. Thanks Guys!
Review photo 1
D
DSI Jul 26, 2025
★ ★ ★ ★ ★ Google
Great products with excellent customer service after the sale
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!
Review photo 1 Review photo 2 Review photo 3 Review photo 4
FS
Fernando Salazar Aug 25, 2025
★ ★ ★ ★ ★ Google
Great quality control arms and great customer service. Korby has been a great help at answering my questions on some issues I’ve been having with installation!
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.
No vehicle selected

Add your vehicle and we'll only show parts that fit it.

Add your vehicle Browse all vehicles
Shop parts
Pick your series in 30 seconds.
Find My Series →
30-second quiz
Shop by Vehicle
Loading…
DRIVETRAIN
Choose a vehicle to confirm fit
Drivetrain Coming Soon Axles · Gearing · Driveshafts ›
MORE PARTS
Parts & Accessories 813 ›
Made in Orem, UT · You break it, we replace it.
385-375-2104