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CORE 4X4 SKU: CRS-J-JK-RS4-MRK

Master Rebuild kit for CRS-J-JK-RS4

Master Rebuild kit for CRS-J-JK-RS4
$105.60 $120.00 Save $14

CAMP from $127 · CRAWL $148

$ 105.60 105.6 USD $ 120.00

$ 120.00

Not Available For Sale
Save $ 14.40

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
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CORE 4X4

Master Rebuild kit for CRS-J-JK-RS4

Master Rebuild kit for CRS-J-JK-RS4
Will this fit your rig?

$ 105.60 105.6 USD $ 120.00

$ 120.00

Not Available For Sale
Save $ 14.40

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 2007–2018

Flex PolyurethaneJoints
1.875" OD lowers / 1.625" OD uppersTubing
3/16" steel tubeWall
Periodic greasingMaintenance

Construction & Materials

Jeep Wrangler JK / JKU 07-18 4pc Cruise Series Rear Adjustable Control Arm Kit

Rear Lower Control Arms Built With 1.875” OD 3/16” Wall steel tube. Polyurethane Bushings on the fixed and adjustable ends with 1.25” x 12 TPI - 3.25” long threads.

Rear Upper Control Arms Built With 1.625” OD 3/16” Wall steel tube. Polyurethane Bushings on the fixed and adjustable ends with 1” x 14 TPI - 3.25” 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.

BSH-CB-2892 × 4

BSH-CB-2891 × 4

Google

Store reviews on Google

See all on Google
5.0
★ ★ ★ ★ ★
132 reviews
5 ★
97%
4 ★
2%
3 ★
0%
2 ★
1%
1 ★
0%
MP
matthew patterson May 27, 2025
★ ★ ★ ★ ★ Google
Ive used core products for my last two jeeps and now my ram. They’re parts are the absolute best quality youll find ANYWHERE. Top quality products and A+ custom service keeps the as my go Roger for any suspension needs.
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.
Review photo 1
MT
Ma TheMeatLoaf Mar 23, 2024
★ ★ ★ ★ ★ Google
Their website estimated 2 days to get my parts but actually took 11. No communication to let me know what’s going on. Parts were missing. Some days they answer questions, some they don’t. Didn’t let me know I’d have to alter stock bolts to fit their parts. All around just seems like they don’t care.
JH
Joe Hu Sep 24, 2025
★ ★ ★ ★ ★ Google
Amazing! I put all my new control arms and it drives a lot smoother and looks great!!!
Review photo 1
RP
Robin Poole Jul 26, 2025
★ ★ ★ ★ ★ Google
I had several questions before my purchase and Korby helped me with the correct parts to order and recommendations. Outstanding customer service and product knowledge! Can't wait to install them!
DN
Devan Nelson Mar 25, 2019
★ ★ ★ ★ ★ Google
Had a great experience with Core 4x4, I desperately needed a custom track bar and found out just a couple days before Easter Jeep Safari. Spence was a huge help and made it happen with plenty of time to spare. Their parts are top notch!
BB
Brayden Brockey Mar 23, 2024
★ ★ ★ ★ ★ Google
Got a set of upper control arms for my xj, really impressed with the quality
Review photo 1
TR
Tim Reigies Mar 25, 2018
★ ★ ★ ★ ★ Google
Received the track bar I ordered, product looks extremely strong, thx core 4x4
SA
Samuel “SamDaman904” Anscher Mar 23, 2024
★ ★ ★ ★ ★ Google
I meant to put this reviewing about a year ago now, but ever since I’ve had the core 4 x 4, upper and lower control arms on my 2017 ram 1500, they have worked flawlessly leave been on many offering chips, and I’ll definitely be buying new accessories from them in the future and their new upper control arms that they’re offering for all of the ram trucks. Fantastic customer service fantastic health very automotive, off-road, friendly, and any aftermarket thing for your truck or SUV that they currently have!
MP
Mirko Pompili Mar 19, 2026
★ ★ ★ ★ ★ Google
I want to share a truly positive experience. I ordered a car kit consisting of two packages, but unfortunately one was lost during shipping with UPS. The situation could have become complicated... but it didn't. The company manager was extremely helpful and professional: he personally followed up on the situation and did everything he could to resolve the issue, even sending me the package again without hesitation. It's rare to find such attentive and reliable customer service these days. My sincere congratulations on your professionalism and commitment: that makes all the difference.
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Made in Orem, UT · You break it, we replace it.
385-375-2104