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2pc Crawl Series Rear Upper Adjustable Control Arms

Jeep Grand Cherokee WK 05-10 2pc Crawl Series Rear Upper Adjustable Control Arms
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429.93 429.93 USD 477.70

477.70

(Save 10%)

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Order today — ships within 1–3 business days
Enter ZIP for arrival estimate change
Order by 3:00 PM MT today — we'll start tomorrow
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Lifetime warranty Fitment guarantee Ships from Orem, UT 4–8 hr install
COLOR 11 colors — pick yours
https://core4x4.com/web/image/product.template/1956/image_1920?unique=edc8f61

2pc Crawl Series Rear Upper Adjustable Control Arms

Jeep Grand Cherokee WK 05-10 2pc Crawl Series Rear Upper Adjustable Control Arms
SKU: CRL-J-WK-RU2
Pick your vehicle to confirm fit

429.93 429.93 USD 477.70

477.70

(Save 10%)

COLOR 11 colors
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.
Compare all tiers →

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.
  • 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.
  • Series
    Cruise: daily driving and light off-road. Camp: overlanding. Crawl: aggressive rock crawling.
  • Gas Tank Skid Clearance Bend
  • Note to Core4x4:

Select Color to see price and add to cart.

Order today — ships within 1–3 business days
Enter ZIP for arrival estimate change
Order by 3:00 PM MT today — we'll start tomorrow
See full timeline

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
Fully Adjustable 0-6" of lift
3 X-Series Options Only Core 4x4

Maximize Your Jeep Grand Cherokee WK’s Suspension Performance

Enhance your Jeep Grand Cherokee WK (2005-2010) with the Crawl Series Rear Upper Control Arms, designed for exceptional strength, durability, and off-road articulation. These high-performance control arms deliver superior stability, axle control, and pinion angle correction, making them an essential upgrade for lifted Jeeps.

Key Features and Benefits

  • Heavy-Duty DOM Tubing Construction – Built from .313" wall DOM tubing, providing maximum strength and longevity in extreme off-road conditions.
  • Fully Adjustable for Lifted Vehicles – Accommodates lifts from 0 to 6 inches, allowing for pinion angle correction, rear axle centering, and optimal suspension geometry.
  • Rock Jock Johnny Joints at Both Ends – Provides maximum articulation and off-road flexibility, allowing for smooth, responsive suspension movement.
  • Left Right-Hand Threaded Adjustability – Enables on-vehicle fine-tuning for quick and hassle-free adjustments.
  • Optional Bent Design for Additional Clearance – Available with an optional bend to provide extra clearance around the gas tank skid plate.
  • Recommended Pairing – Pair with the Crawl Series Rear Lower Control Arms (CRL-J-WK-RL2) for a fully adjustable and optimized rear suspension system.

Durable Two-Stage Powder Coating

Each control arm undergoes a two-stage powder coating process, featuring: Corrosion-resistant zinc primer base coat for maximum rust prevention. Top coat available in 10 colors for added protection and customization.

This process provides long-lasting protection against rust and wear while allowing you to personalize the look of your suspension components.

Proudly Made in the USA

Manufactured in Orem, UT, our Crawl Series Rear Upper Control Arms meet the highest standards of American craftsmanship, ensuring top-tier reliability, strength, and precision.

Optional Hardware Upgrade

Designed for straightforward bolt-on installation using factory hardware. For those dealing with rusted or stubborn bolts, optional Grade 8 hardware kits are available for a seamless setup.


  • Vehicle Fitment: Jeep Grand Cherokee WK 05-10 – Enhances rear axle stability, prevents drivetrain stress, and improves ride quality for a smoother, more controlled suspension setup.

  • CORE Advantage: Eliminates axle misalignment, enhances suspension geometry, and corrects pinion angle, reducing vibrations and ensuring optimal driveline performance for lifted vehicles.

  • Adjustability: Designed for 0 to 6-inch lifts, allowing precise pinion angle correction and axle centering with left- and right-hand threaded adjusters for fine-tuning without removal.

  • Construction: Built from 5/16” wall DOM tubing, featuring Johnny Joints at both ends for maximum articulation, durability, and off-road flexibility, ensuring a bind-free and responsive suspension.

  • Two-Stage Powder Coating: Zinc primer base and top coat available in 10 vibrant colors protect against corrosion and allow for personalized styling of your rig.

  • Warranty and Origin: Proudly manufactured in the United States, our product includes a lifetime warranty on all non-wear items, providing you with confidence and peace of mind in your purchase.

Built With

Rear Upper control arms 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.

Make Model Submodel Years
Jeep Grand Cherokee 2005 - 2010

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

Construction & Materials

Rear Upper control arms 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.

Vehicle Jeep Grand Cherokee WK (05–10)
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.
Lift Size 0" — 6" or 6"+
Hardware No Hardware or Complete Kit
Series Crawl Series
Gas Tank Skid Clearance Bend No Bend or Clearance Bend
Placement on Vehicle Rear Upper, Rear
Mounting Style Bolt-On
Google

Reviews of Core 4x4

See all on Google
5.0
132 reviews
5
97%
4
2%
3
0%
2
1%
1
0%
RT
Ruby Timm Apr 27, 2025
Google
Bought a new 2019 Ram 1500. Had bad rear wheel hop since new, got all four core 4x4 control arms and it fixed the issue. Thanks
RH
Rex Hodges Jun 26, 2025
Google
After ordering an upper and lower adjustable control arm kit manufactured by CORE 4X4 from a jeep parts distributor who's intials are E.T., they came with 3 of the threaded ends missing. After over 2 months of phone calls and emails to this E.T. company nothing was resolved. I finally decided to call CORE 4X4 myself and tell them my dilemma. I spoke with a very personable and professional gentleman named Korby, who is one of CORE 4X4's representatives, after a brief discussion of what I went thru he simply asked me for a picture and some measurements and the items I was missing and asked if I could cover ONLY the cost of shipping and I had my missing parts in exactly 1 weeks time. This company not only builds all it's parts in the U.S.A., they stand behind their products with great customer service and life time warranty. My experience with this company and their Rep Korby was fantastic. I would definitely recommend CORE 4X4 to anyone who needs parts for any 4x4 projects. You just can't beat their quality and service. Rex Hodges Valparaiso, Indiana
JM
Jason Mitchell Dec 8, 2025
Google
Installed the full kit on my XJ. Ride quality is night and day better than what I had before. The articulation on the trail is insane. These guys know what they are doing. Already recommended Core 4x4 to everyone in my club.
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.
TG
Travis Grimm Mar 23, 2024
Google
To start off if you're looking to upgrade your control arms definitely hit this company up. Great product, easy install of the product, with three different tiers everything is priced pretty good, I'm a sticker guy and they sent a sticker for each arm each track bar and also three extra ones so the extra are on the Jeep the advertise them for sure. If you're reading this review I highly recommend you to check their website out.
Review photo 1 Review photo 2 Review photo 3 Review photo 4
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
EA
Eric Ahonen Mar 24, 2021
Google
Awesome control arms! My mechanic said “ your Jeep is pretty much bulletproof now.” And I just got the tier 1 arms! The people at the core 4x4 shop were really nice too. They were running behind on shipping, (which is understandable) so I decided to go pick it up because it was only an hour drive. They gave me a free $60 hardware kit for the inconvenience. Thanks core 4x4! You guys are awesome!!
D
DSI Jul 26, 2025
Google
Great products with excellent customer service after the sale
GC
Grant Chaisson Jun 26, 2025
Google
These guys are awesome!! They have helped me build multiple jeeps from zjs to mjs and now with my lj build they all ways impress. There products are the best on the market in my eyes. The best part about it all is it's all made right here in american and shipped anywhere in the world 🌎 . Don't think twice when your looking for control arm or lift kits for your vehicle if these guys sell it BUY IT!!!
Review photo 1
TM
Tony Moller Aug 25, 2025
Google
Awesome parts! Support the older Jeeps! Great customer service.

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 0" — 6", 6"+
Hardware No Hardware, Complete Kit
Gas Tank Skid Clearance Bend No Bend, Clearance Bend
Vehicle Jeep Grand Cherokee WK (05–10)
Brand CORE 4X4
Series Crawl Series
Note to Core4x4: -
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