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SKU: CMP-J-JK-FS4 ★★★★★ (132 reviews)
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LIFETIME WARRANTY
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$ 595.31 595.31 USD $ 661.45

$ 661.45

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🔧 Built to order · Ships in 1–3 business days

COLOR 11 colors — pick yours
https://jerdev.core4x4.com/web/image/product.template/2110/image_1920?unique=8d2fc88
SKU: CMP-J-JK-FS4
Fits: 2007 - 2018 Jeep Wrangler JK / JKU Add vehicle
Add Vehicle Google 5.0 ★★★★★ (132 reviews)

$ 595.31 595.31 USD $ 661.45

$ 661.45

Build Your Kit

  • Brand
  • Color
    Powder coat color for control arms and track bars. Does not affect performance.
  • Series
    Cruise: daily driving and light off-road. Camp: overlanding. Crawl: aggressive rock crawling.
  • 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.
  • Note to Core4x4:
  • Vehicle
    Confirm this matches your vehicle. Use Shop by Vehicle to filter correctly.

Select Color to see price and add to cart.

WHAT’S INCLUDED
4
Upper Control Arms
4
Lower Control Arms
2
Front Track Bars
2
Rear Track Bars
4
End Links

4–8 hr install Moderate 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
Ships in 3 Days From our UT facility
Fully Adjustable 0-6" of lift
3 X-Series Options Only Core 4x4

Why Builders Choose CORE 4X4

Warranty facts, not marketing language.

vs. MetalCloak

Their “lifetime” language refers to their service model. Actual parts warranty: 1 year. Ours: lifetime.

vs. Teraflex

Skip a maintenance interval? Their warranty voids. Ours doesn’t.

vs. Clayton Off Road

Clayton warrants their Johnny Joints for 90 days. We cover ours for life.

Experience Unrivaled Comfort and Durability

Enhance your Jeep Wrangler JK's handling, stability, and off-road capability with the Camp Series Front Control Arms Set. Designed for 2007-2018 Jeep Wrangler JK models, this set includes both Front Upper Control Arms (CMP-J-JK-FU2) and Front Lower Control Arms (CMP-J-JK-FL2), providing a comprehensive suspension upgrade. Whether you’re conquering rough terrain or cruising the highway, these control arms deliver superior strength, flexibility, and precise alignment adjustments to optimize your driving experience.

What's Included in the Kit?

  • Front Upper Control Arms (CMP-J-JK-FU2)
  • Front Lower Control Arms (CMP-J-JK-FL2)

Key Features Benefits

  • Corrects caster angle to prevent wandering and improve steering return-to-center.
  • Recenters front axle for better alignment and improved handling.
  • Heavy-duty construction with 1.75” OD DOM Tubing for superior durability.
  • Accommodates lifts from 0 to 6 inches, ensuring proper geometry and alignment.
  • Johnny Joints for increased articulation and polyurethane bushings for vibration dampening.
  • Two-stage powder coating for corrosion resistance, available in 10 colors.
  • Proudly made in the USA with high-quality materials and precision engineering.
  • Recommended pairing: Camp Series Front Track Bar (CMP-J-JK-FTB1) for a fully optimized front suspension setup.

Caster Correction Axle Centering for Better Drivability

When lifting a Jeep Wrangler JK, the front axle naturally shifts off-center, and the caster angle decreases, leading to poor steering response, increased wandering, and a lack of stability. Correcting these issues is crucial for maintaining proper drivability.

Caster Angle Restoration

The lower control arms play a key role in regaining caster, helping the front tires return to center after a turn and preventing the Jeep from following road ruts or wandering. Proper caster correction improves straight-line stability and reduces steering effort, making lifted vehicles safer and more predictable to drive.

Axle Centering Alignment

The upper and lower control arms work together to recenter the front axle, ensuring proper wheel positioning for correct steering geometry and minimized tire wear. When paired with our Camp Series Front Track Bar, you achieve full front suspension correction, eliminating handling inconsistencies caused by lifting your Jeep.

Built for Strength and Performance

Crafted from heavy-duty DOM Tubing with a .313" wall thickness, these control arms are engineered for extreme durability. The design features: Johnny Joint at the adjusting end for maximum articulation and flexibility off-road. Tapered polyurethane bushing at the axle end for vibration dampening, reducing road noise while maintaining a smooth ride.

This combination delivers the best of both worlds—enhanced articulation for off-road performance and exceptional road comfort.

Adjustability for Perfect Alignment

Our adjustable control arms accommodate lifts from 0 to 6 inches, allowing precise adjustments to caster, pinion angles, and axle positioning. With full adjustability, you restore the proper geometry lost during a lift installation, improving your Jeep’s handling, reducing stress on suspension components, and maximizing tire longevity.

For lifts beyond 6 inches, contact us for additional options and support.

Resilient Two-Stage Powder Coating

To ensure long-term durability, our control arms undergo a two-stage powder coating process, providing superior corrosion resistance and an eye-catching finish: Zinc Primer Base Coat – Protects against rust and environmental wear. Top Coat in 10 Custom Colors – Allows you to customize the look of your suspension while adding an extra layer of durability.

Proudly Made in the USA

Every Camp Series product is manufactured in our Orem, UT facility, ensuring the highest standards of quality and craftsmanship. By sourcing raw materials locally and maintaining in-house production, we deliver superior products while supporting American manufacturing.

Optional Hardware Upgrade

These control arms are designed to install easily using factory hardware. However, for rusted or stubborn bolts, we offer optional new Grade 8 hardware kits (available separately) to ensure a seamless installation.

In Conclusion

Upgrading to our Camp Series Front Control Arms Set is the best way to restore proper caster, realign your front axle, and improve your Jeep’s drivability after lifting. Whether you're looking for a smoother ride on-road or enhanced articulation off-road, these control arms provide the perfect balance of strength, adjustability, and long-lasting performance.

Take control of your suspension and upgrade your Jeep Wrangler JK today!


Make Model Submodel Years
Jeep Wrangler 2007 - 2018

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

Master Rebuild kit for CMP-J-JK-FS4 $ 114.00
Master Rebuild kit for CMP-J-JK-FL2 $ 72.00
Master Rebuild kit for CMP-J-JK-FU2 $ 42.00

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
Vehicle Jeep Wrangler JK / JKU (07–18)

Select your lift size in Step 1 — the kit ships with the correct geometry for that height. If you’re running a non-standard setup, call us before ordering and we’ll confirm compatibility.

Death wobble is a geometry problem, not just worn parts. Cruise Series corrects caster angle and eliminates the flex points that let shimmy start. Replacing one part at a time delays the fix — this replaces the geometry.

Yes, if you’ve done a lift kit before. Full-day project. Watch the complete JT install walkthrough on our YouTube channel — most owners wrap it in a day. Any off-road shop can run it if you’d rather have it done.

Any non-wear component fails — we replace it. No mileage cap. No maintenance intervals to track. No fine print about voiding if you miss a service. Lifetime means lifetime.

Teraflex’s lifetime warranty voids if you miss a maintenance interval. MetalCloak’s actual parts warranty is 12 months — their “lifetime” language refers to their service program. No conditions here.

See It Installed

Install videos and build guides on our YouTube channel.

Watch more installs on YouTube
Google

Reviews from Google

See all on Google
5.0
★ ★ ★ ★ ★
132 reviews
5 ★
97%
4 ★
2%
3 ★
0%
2 ★
1%
1 ★
0%
RM
R2d2 Movi78 Feb 21, 2026
★ ★ ★ ★ ★ Google
I’m extremely impressed with Core 4x4. The quality of their parts is outstanding — everything feels solid, well‑built, and engineered with real attention to detail. Shipping was fast and everything arrived perfectly packaged. Their customer service is just as good as their products: responsive, helpful, and genuinely committed to making sure you get exactly what you need. Overall, a top‑tier experience. I’ll definitely be buying from them again. Specially thank you Mr. Linscomb from Core 4x4. Arturo M.
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.
JT
jacob trice Apr 27, 2025
★ ★ ★ ★ ★ Google
Core 4x4 has outstanding products at a fair price and unmatched customer service. When you call Korby, it's like talking with a friend. Very cool and helpul! I ordered some custom control arms, but from the wrong product line and they were super cool about returning them and upgrading to a better "Crawl" series. Only charged the difference between the two products. They paid all the return shipping and sent the uprgaded arms super quick. It was only a couple days. Awesome!! I couldn't be happier with the transaction👍🏼 Also, these control arms are stout and take a beating. I run heck out my Jeep in the rocks and desert. No problems whatsoever. Thanks Core 4x4, ya'll are welcome at my campfire anytime! Jake T. Pleasant Hill, Or.
E(
Eric Hernandez (savagefit) May 27, 2025
★ ★ ★ ★ ★ Google
The whole process was quick and painless. The products are top tier and when I reached out them for package update info, Korby Linscomb was very responsive, and got me the answers I needed the same day. Even when I emailed back to some additional info, he sent what I was looking for that same day. I love core 4x4 and will be giving them my business from now on.
DW
Darin Wuebbels May 27, 2025
★ ★ ★ ★ ★ Google
Thanks for the fabulous customer service. Your products and customer service are first class. I highly recommend these guys. Excellent experience.
MS
Mr. Smith Nov 23, 2025
★ ★ ★ ★ ★ Google
Have yet to get to try them but I bought some upper, and then later , lower control arms for my 03 rubicon. The pricing is very fair, so fair I was hesitant to even purchase. When the product came in I was happily mistaken. These are some beefy units with an incredible warranty! I’m very excited! I went with the “Camp”series as I mostly daily it. I have trouble with the shipping at times when I ordered but Corby is quick to notice things and help communicate the solution. Looking forward to buying more parts!
GH
Gary Haag Aug 25, 2025
★ ★ ★ ★ ★ Google
Ordered a set of Core 4x4 control arms for my 2006 Jeep TJ. These are some heavy duty quality control arms. Can't wait to get them installed. Great customer service too!
N
niceguyr1 Mar 24, 2023
★ ★ ★ ★ ★ Google
I purchased upper and lower adjustable arms for my WJ and lowers were missing the spacers. I didn't know until 3 months later when I was installing them. With absolutely zero hassles they quickly sent me the missing spacers. Fantastic product and service! Huge thank you guys for the awesome service and parts!!! Customer service is quickly becoming a lost commodity and you guys gave me hope that it's still alive and well, you just have to buy from the right people... Thanks again for going above and beyond! 👍👍
RC
Robert C May 27, 2025
★ ★ ★ ★ ★ Google
Fantastic products! Outstanding performance!! Absolutely the best customer service!! You will not be disappointed!
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.

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
Brand CORE 4X4
Series Camp Series
Note to Core4x4: -
Vehicle Jeep Wrangler JK / JKU (07–18)
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