Enhance Your Jeep’s Suspension for Maximum Comfort and Control
Upgrade your Jeep Wrangler JK (2007-2018) with the Camp Series Rear Upper Control Arms, engineered to improve on-road comfort, off-road articulation, and suspension durability.
These adjustable control arms provide better axle alignment, improved handling, and reduced drivetrain stress, making them a crucial upgrade for lifted Jeeps.
Key Features and Benefits
- High-Strength DOM Tubing – Constructed from 1.5” OD DOM tubing with a 5/16” wall thickness, these control arms are significantly stronger than factory components, ensuring increased durability and long-term performance.
- Precise Axle Alignment – Adjustable design corrects rear axle positioning, reducing drivetrain strain and ensuring proper suspension geometry after lifting your Jeep.
- Johnny Joint for Maximum Flexibility – The adjustable end features a RockJock Johnny Joint, providing exceptional articulation, reduced wear, and smoother off-road maneuverability.
- Tapered Polyurethane Bushing – The axle end is equipped with a durable polyurethane bushing, absorbing vibrations and enhancing ride quality.
- Optimized Suspension Geometry – Adjusts to accommodate lifts from 0 to 6 inches, preventing issues like incorrect pinion angle and excessive driveshaft wear.
- Recommended Pairing – For optimal performance, we recommend pairing these arms with our Camp Series Rear Lower Control Arms (CMP-J-JK-RL2) to ensure proper rear axle alignment and improved stability.
Why Proper Rear Axle Alignment Matters
Lifting your Jeep Wrangler JK can throw off suspension geometry, leading to poor alignment, excessive driveshaft angles, and axle misalignment.
Without adjustable upper control arms, your pinion angle may become incorrect, causing:
- Driveline vibrations
- Excessive wear on U-joints
- A rough ride
The Camp Series Rear Upper Control Arms allow you to fine-tune your axle position, ensuring your Jeep drives smoothly and efficiently while maximizing off-road articulation and traction.
Two-Stage Powder Coating for Maximum Durability
Every Camp Series Rear Upper Control Arm undergoes a rigorous two-stage powder coating process for superior corrosion resistance and longevity: Zinc primer base coat – Provides a barrier against rust, road salt, and harsh environmental elements. Durable top coat in 10 color options – Adds long-lasting protection and allows you to customize your Jeep’s suspension to match your build.
Proudly Made in the USA
Manufactured in our Orem, UT facility, our Camp Series Rear Upper Control Arms are crafted with American-made quality and precision.
We use locally sourced materials and oversee the entire production process to ensure every part meets our high standards for durability and performance.
Optional Hardware Upgrade
Designed for easy installation using factory hardware, but if your Jeep has rusted or worn-out bolts, we offer optional Grade 8 hardware kits, available separately, to ensure a smooth installation.
- Correct rear axle alignment
- Improve ride quality
- Enhance off-road performance
With heavy-duty construction, full adjustability, and premium joint technology, these control arms ensure a smoother ride, better suspension articulation, and maximum durability.
Upgrade today and experience the CORE 4X4 difference in quality, performance, and American craftsmanship!
Vehicle Fitment: Jeep Wrangler JK 07-18 – Precision-engineered for all trims to improve rear axle alignment, drivability, and suspension articulation.
CORE Advantage: Corrects pinion angle and reduces drivetrain stress, improving ride quality, suspension performance, and off-road articulation.
Adjustability: Fully adjustable to accommodate 0–6” lifts, allowing for fine-tuned axle positioning and optimized suspension geometry.
Construction: Built from 1.5” OD .313-wall DOM tubing with a Johnny Joint at the adjustable end and a polyurethane bushing at the axle end for durability and vibration control.
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 arm built with 1.5” OD 5/16” Wall DOM. Polyurethane Bushing on the fixed end and a Forged Johnny Joints on the adjustable end with 1” x 14” TPI - 2.32” long threads.
| Make | Model | Submodel | Years |
|---|---|---|---|
| Jeep | Wrangler | 2007 - 2018 |
Each rebuild kit includes all necessary components to replace and restore wearable parts.
Construction & Materials
Rear Upper control arm built with 1.5” OD 5/16” Wall DOM. Polyurethane Bushing on the fixed end and a Forged Johnny Joints on the adjustable end with 1” x 14” TPI - 2.32” long threads.
| Vehicle | Jeep Wrangler JK / JKU (07–18) |
| 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 | Camp Series |
| Lift Size | 0" — 6" or 6"+ |
| Hardware | No Hardware or Complete Kit |
| Placement on Vehicle | Rear Upper, Rear |
| Mounting Style | Bolt-On |
Use the vehicle selector on our website to shop by your year, make, and model. On product pages, use the kit builder to select your color, series, lift height, and any add-on options, then add to cart. If you need help, call or email our team.
Standard orders typically ship within 1–3 business days of ordering. Custom color orders take approximately 5–10 business days. Because everything is built in-house, we can turn orders quickly even for custom specifications.
You can reach our team through the contact form on our website, or browse to the Contact Us page. Our team is available to answer pre-sale and technical questions before and after your purchase.
Reviews of Core 4x4
Accessories & Add-ons
Jeep Wrangler JK / JKU 07-18 8pc Camp Series Adjustable Control Arm Kit
$ 1,270.45
Jeep Wrangler JK / JKU 07-18 10pc Camp Series Adjustable Control Arm, Track Bar Kit
$ 1,658.95
Jeep Wrangler JK / JKU 07-18 12pc Camp Series Adjustable Control Arm, Track Bar, Steering Kit
$ 2,729.95
Jeep Wrangler JK / JKU 07-18 16pc Camp Series Adjustable Control Arm, Track Bar, Steering, End Link Kit
$ 3,097.45
Jeep Wrangler JK / JKU 07-18 2pc Camp Series Rear Lower Adjustable Control Arms
$ 367.45
Jeep Wrangler JK / JKU 07-18 4pc Camp Series Rear Adjustable Control Arm Kit
$ 671.95Specifications
| 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 |
| Vehicle | Jeep Wrangler JK / JKU (07–18) |
| Brand | CORE 4X4 |
| Series | Camp Series |
| Note to Core4x4: | - |
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