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- Shop by Vehicle
JEEP
DODGE
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- Parts & Accessories
Replacement Parts
Tools
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- FAQ
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$454.95
$409.46
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Experience unmatched off-road adventures and on-road comfort with our Crawl Series Rear Upper Control Arms. Specifically engineered to be compatible with Jeep Grand Cherokee WK model years 2005-2010, this pair of Rear Uppers (CRL-J-WK-RU2) delivers superior durability and unrivaled strength over both factory components and competing aftermarket options.
Built from robust 5/16″ wall thick DOM tubing for excellent durability, our Rear Upper Control Arms incorporate the superior flexibility of Rock Jock Johnny Joints at both ends. This unique design ensures improved stability and responsiveness in your vehicle’s suspension, delivering performance that far surpasses others in the market. With left and right hand threading, these control arms can be adjusted while still installed on the vehicle, providing unparalleled convenience and adaptability.
Our Crawl Series rear upper control arms are key to maintaining superior drivability after lifting your vehicle. Specifically crafted to adjust for lifts between 0 and 6 inches, they effortlessly correct the pinion angle and help recenter your vehicle’s rear axle. Pairing these with our Crawl Series Rear Lower Control Arms provides a complete suspension solution, optimizing vehicle handling, reducing wear on your tires and suspension, and accommodating future lift modifications. Furthermore, we offer an optional bend in the control arms for additional clearance around the gas tank skid plate, an option to consider on this vehicle.
All components in the Crawl Series undergo a rigorous two-stage powder coating process, enhancing their durability and visual appeal. Beginning with a corrosion-resistant zinc primer base coat, we follow up with a top coat of your choice from our selection of 10 striking colors. This process ensures that your vehicle’s upgraded components not only deliver superior performance but also maintain their aesthetic appeal over time.
Our Crawl Series components are proudly manufactured in our facility in Orem, UT. By sourcing raw materials locally and maintaining full control over the manufacturing process, we ensure products that meet the highest quality standards while maintaining competitive pricing.
Our Rear Upper Control Arms can be conveniently installed using factory hardware. If anything additional is needed, we’ve got you covered – it’s included in the package. We also offer new Grade 8 hardware kits as an optional upgrade, available for separate purchase, for a smooth and straightforward installation process.
Investing in our Crawl Series Rear Upper Control Arms means choosing superior off-road performance, unmatched on-road comfort, and the pinnacle of American engineering. Upgrade your vehicle today to experience the benefits of precise alignment correction and unparalleled trail performance.
| Series | Crawl |
|---|---|
| Color Options | Charcoal, Orange, Yellow, Blue, Green, Light Green, Red, Purple, Black, White |
| Built With | 1.5" OD 5/16" Wall DOM tubing |
| Grease Fittings | Included |
| Lift Range | 0" — 6", 6"+ |
| Fixed End | Welded Rock Jock Johnny Joint |
| Thread Size | 1" x 14 TPI |
| Thread Length | 2.5" |
| Make | Model | Year |
|---|---|---|
| Jeep | Grand Cherokee WK | 2005 |
| Jeep | Grand Cherokee WK | 2006 |
| Jeep | Grand Cherokee WK | 2007 |
| Jeep | Grand Cherokee WK | 2008 |
| Jeep | Grand Cherokee WK | 2009 |
| Jeep | Grand Cherokee WK | 2010 |
Our product lines are designed to offer the absolute most value for your budget. Not every build is the same and we understand that. Our series differ mostly in the components used in the construction of the parts. Our Cruise and Town Series utilizes our high grade flex poly bushings at both ends of the arm, this has proven to be a smooth riding easy to maintain and replace bushing that we absolutely love. Our Camp and Trail Series utilizes 5/16″ wall DOM tubing and incorporates a flexible Johnny Joint at the adjusting end, this series has been our most popular series for all around use, great for daily drivers that want to tear up the trails as well. Our Crawl, Tow, and Track Series utilizes the same 5/16″ wall DOM tubing, but features Johnny Joints at both ends. This series gives you the absolute most out of your suspension. This is great for heavy towing/hauling and extreme off-roading. Also, if the component is straight in these series we will machine these left and right hand threaded for easy adjustment on the vehicle!
We are constantly expanding our product lines to include complete kits, if you don’t see something on the site for your vehicle, reach out to our sales team and we can put something together for you.
Our two main sizes of jam nuts require an1-1/2″ wrench or an 1-5/8″ wrench. Generally speaking the 1-5/8″ jam nuts are used on our lower control arms and the 1-1/2″ jam nuts on our upper control arms and track bars. There are some exceptions, but we do offer a crow’s foot that has both sizes.
Any non-synthetic moly based grease is safe on our products, avoid anything red as this can prematurely deteriorate the internal components of the Johnny Joints and bushings used on our parts.
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Core4x4 has an unwavering dedication to crafting top-tier control arms and aftermarket parts that can conquer any trail or obstacle, while still maintaining exceptional on-road performance.
As the founder of Core 4×4, I stand behind our unwavering commitment to delivering top-tier, American-made products that don’t break the bank. We take immense pride in our craftsmanship, sourcing materials domestically to ensure the highest quality possible. Our team goes the extra mile to rigorously test and refine every product, ensuring it not only meets but exceeds industry standards. When you choose us, you’re choosing durability, reliability, and affordability. That’s not just a business model— it’s a promise, from our family to yours.
Sincerely,
Spence Schramm
Founder, Core 4×4
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