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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%
Z
Zion Sep 24, 2025
★ ★ ★ ★ ★ Google
Every product I have received from them has been nothing short of fantastic. Korby in Customer service went above and beyond to help me fix my own mistake. I cannot reccomend them enough.
RH
R and H H Oct 24, 2025
★ ★ ★ ★ ★ Google
Top notch company. Mechanic lost bolts that clamp upper control arms. Korby sent out spare bolts no charge. Best customer service I’ve come across in a long time. Only suspension brand I’ll ever use.
KK
Kevin Kinard Oct 24, 2025
★ ★ ★ ★ ★ Google
Great product, excellent customer service. I mistakingly ordered a track bar for the wrong year model and Korby helped me out by sending me the correct part that I needed no questions asked. I highly recommend.
MG
Morgan Griffith Mar 25, 2018
★ ★ ★ ★ ★ Google
I met a couple of the Core 4x4 guys at the Salt Lake Offroad Expo and decided to try them out after noticing one of my control arm bushings was disintegrated. I called to discuss parts on Thursday and I was leaving for a trip on Saturday. These guys built my control arms and had them ready to be picked up Friday, 24 hours later. The parts seem to be great quality and they charged me nothing extra to have them painted. These guys were extremely helpful and without them my trip probably would have been cancelled. looking forward to testing out the arms on my next trip to Moab.
A
Aaron Mar 23, 2024
★ ★ ★ ★ ★ Google
I have recently come to know Core 4x4 when I purchased a Jeep XJ and was looking for a place that had dedicated XJ suspension and components. Here is what makes them different than most other shops. All of their components are top shelf quality and they back it up if you break any of it. I was able to see their shop when I picked up an order locally and was impressed with their attention to detail and how they assemble and powder coat each part. I had an issue with a shackle and needed the threaded shaft to be shorter. I called in and talked to Kaden and he told me to come by and they would shorten it for me. When I got there, Kaden and Spencer (the owner) met me and talked about options and proceeded to make the right adjustments to fit my XJ. Told me if anything changes in the future and I need additional length, they would take care of me. So what really sets them apart from others is their Customer Service. Try calling in to any other Jeep suspension or part shop and see how they treat you. Been there - done that. Will continue to do business with Core and their team. Getting that kind of service for just a shackle has me thinking I may need to replace my JT components with Core's. Thanks Guys for being helpful good humans!
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.
MV
Mr. V Mar 24, 2021
★ ★ ★ ★ ★ Google
Good quality parts, much stronger than stock
DD
DANIEL DUSSAULT Nov 23, 2025
★ ★ ★ ★ ★ Google
Very beefy items for a very reasonable price.  Personally have CORE rear track bar and all upper control arms for my 04 Jeep TJ.  Had a slight issue with control arm length and they went above and beyond to swap jam nuts to get me where I needed to be.  Really have to appreciate a company like this.
CL
Cade Leith Mar 23, 2024
★ ★ ★ ★ ★ Google
Have full upper/lower CA set on both front and rear axles on a 96 ZJ. These are the rubber bushing sets not joint sets. I have beat the hell out it in the Nevada desert for 2 years and has been great. I don’t go fast but I do articulate suspension a lot. Super solid and haven’t any issues. Just inspected the entire set recently due to some banging under it. Turns out the banging is lower rear shock bushings. Inspected each CA along the way nothing. Aside from dirt and obviously winter roads and what not still in excellent condition, bushings are solid like the day they were installed. I’ll add that I’m about tapped on a short arm at 4.25(less with settle) so the front CA’s get beat on just from that, still they’re like new. Paint is great condition, this set is red. I would definitely buy again. Another plus for me, Utah isn’t local necessarily, but it’s nice to support businesses closer to me.
MB
Melody Baker Jan 22, 2026
★ ★ ★ ★ ★ Google
I ordered a part for my 03 Jeep TJ and all I can say is wow! Korby at Core 4x4 is a total rockstar!! There was a glitch with my payment and within minutes, Korby reached out to me to get it fixed, then sent my receipt with the tracking number. I lost the number and reached out to him during the Holidays and got a rapid response with the number again. I can’t say enough about the customer service and the quality of parts. Thank you!!

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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