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4pc Crawl Series Front Adjustable Control Arm Kit

Jeep Gladiator JT 20+ 4pc Crawl Series Front Adjustable Control Arm Kit
DOES NOT FIT TUNDRA

651.48 651.48 USD 766.45

766.45

(Save 15%)

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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://dev.core4x4.com/web/image/product.template/2118/image_1920?unique=edc8f61

4pc Crawl Series Front Adjustable Control Arm Kit

Jeep Gladiator JT 20+ 4pc Crawl Series Front Adjustable Control Arm Kit
SKU: CRL-J-JT-FS4
Does not fit Toyota Tundra

651.48 651.48 USD 766.45

766.45

(Save 15%)

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.
  • Series
    Cruise: daily driving and light off-road. Camp: overlanding. Crawl: aggressive rock crawling.
  • Hardware
    Choose upgraded hardware if your factory hardware is worn, damaged, or missing.
  • Lift Size
    Choose your current front lift height. Measure from center of wheel to fender if unsure.
  • 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’s Performance and Handling

Upgrade your Jeep Gladiator JT’s front suspension with the Crawl Series Front Control Arms Set, engineered to solve factory alignment challenges and enhance your off-road experience. Designed for model years 2020-Present, this comprehensive set includes a pair of Front Lower Control Arms (CRL-J-JT-FL2) and a pair of Front Upper Control Arms (CRL-J-JT-FU2). Together, they provide the ultimate solution for addressing factory caster deficiencies and re-centering the front axle, while offering exceptional flexibility for lifts from 0 to 6 inches. Pairing with our Crawl Series Front Track Bar or Rear Control Arms creates a complete suspension upgrade for unmatched performance.

Detailed Key Features and Benefits

  • Enhanced Alignment Correction – Addresses factory caster deficiencies and improves drivability, eliminating wandering and rut-following tendencies. Perfect for correcting geometry on vehicles with lifts from 0 to 6 inches.
  • Heavy-Duty Construction – Built with 1.75” OD DOM tubing for the lowers and 1.5” OD DOM tubing for the uppers, both with 5/16” wall thickness, ensuring unmatched strength and durability on tough trails.
  • Johnny Joints for Maximum Flexibility – Equipped with Rock Jock Johnny Joints at both ends for superior articulation and smoother movement, allowing for bind-free performance in extreme off-road conditions.
  • Complete Suspension Solution – Pair this Front Control Arms Set with our Crawl Series Rear Control Arms Set to optimize axle alignment, articulation, and overall performance, creating a fully capable suspension system ready for any terrain.

Engineered for Flexibility and Precision

This set is designed to solve factory caster issues, particularly noticeable with smaller lifts, while remaining compatible with taller lifts. When paired with our Front Track Bar or Rear Control Arms, you’ll experience the ultimate in axle alignment, articulation, and overall suspension performance.

Premium Two-Stage Powder Coating

All components undergo a rigorous two-stage powder coating process, featuring a zinc primer base for corrosion resistance and a durable top coat in your choice of 10 colors, ensuring long-lasting protection and customization.

Made in the USA

Proudly manufactured in Orem, UT, our Crawl Series Front Control Arms are built to the highest standards of American engineering, offering premium quality and durability you can trust.

Optional Hardware Upgrade

Designed for straightforward installation using factory hardware, with optional Grade 8 hardware kits available separately to handle rusted or stubborn bolts.


  • Vehicle Fitment: Jeep Gladiator JT 20+ – Resolves factory caster issues, improves handling, and ensures optimal suspension geometry for lifted and stock-height setups.

  • CORE Advantage: Enhances steering stability, eliminates wandering, and increases axle articulation, delivering smoother on-road performance and superior off-road capability.

  • Adjustability: Fully adjustable for lifts from 0 to 6 inches, allowing for precise caster correction, axle re-centering, and optimized suspension alignment.

  • Construction: Built with heavy-duty 1.75” OD DOM tubing for lowers and 1.5” OD DOM tubing for uppers, both with 5/16” wall thickness, featuring Johnny Joints at both ends for maximum articulation and durability.

  • 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

Front Lower Control Arm Built With 1.75” OD 5/16” Wall DOM. Welded Johnny Joint on the fixed end and a Forged Johnny Joint on the adjustable end with 1.25” x 12 TPI - 2.625” long threads.

Front Upper Control Arm Built With 1.5” OD 5/16” Wall DOM. Welded u-bracket on the welded end and a Forged Johnny Joint on the adjustable end with 1” x 14” TPI - 2.32” long threads.

Make Model Submodel Years
Jeep Gladiator 2020 - Present

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

Construction & Materials

Jeep Gladiator JT 20+ 2pc Crawl Series Front Lower Adjustable Control Arms

Front Lower control arm built with 1.75” OD 5/16” Wall DOM. Welded Johnny Joint on the fixed end and a Forged Johnny Joint on the adjustable end with 1.25” x 12 TPI - 2.625” long threads.

Jeep Gladiator JT 20+ 2pc Crawl Series Front Upper Adjustable Control Arms

Front Upper control arm built with 1.5” OD 5/16” Wall DOM. Welded u-bracket on the welded end and a Forged Johnny Joints on the adjustable end with 1” x 14” TPI - 2.32” long threads.

Vehicle Jeep Gladiator JT (20–Present)
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 Crawl Series
Hardware No Hardware or Complete Kit
Lift Size 0" — 6" or 6"+
Placement on Vehicle Front Upper, Front Lower, Front
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.

Google

Reviews of Core 4x4

See all on Google
5.0
132 reviews
5
97%
4
2%
3
0%
2
1%
1
0%
SH
Shawn Hooten Apr 27, 2025
Google
Great products, shipped the next day during a big sale event. Core 4x4 gets it right and gets it done! Thank you all.
EG
Erica Grissom May 27, 2025
Google
First off, I wish I knew about them sooner. The customer service is top tier. The response time is about 30 min no waiting 1-3 days to get a response. The parts are heavy-duty and look amazing. The packaging is perfect, I can't wait to hit some trails. Thanks Core4x4
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.
MH
mark hinz Mar 2, 2026
Google
Went above and beyond to get the parts we needed to complete our customers build for Moab Easter safari cant thank you enough for all your hard work and efforts Thank you and look forward to working with you in the near future
MT
Ma TheMeatLoaf Mar 23, 2024
Google
Their website estimated 2 days to get my parts but actually took 11. No communication to let me know what’s going on. Parts were missing. Some days they answer questions, some they don’t. Didn’t let me know I’d have to alter stock bolts to fit their parts. All around just seems like they don’t care.
CM
Cameron Masters Mar 24, 2023
Google
Absolutely incredible family owned business. I asked to pick up my order since I’m local and they came in on a weekend to accommodate. Had to make some adjustments to parts and took the time to make sure it was perfect. Parts are incredible quality. If you have a Jeep, do not hesitate to support this local business.
MD
Mark DiGrappa Apr 27, 2025
Google
First off: Korby, the gentleman that helped me decide on which kit to go with is EASILY the nicest, and most patient person I’ve dealt with, when ordering parts for this build. Second: the quality of the product is INSANE! These parts are so nicely fabricated, then powder coated for extra longevity, and they even offer an aluminum upgrade in some cases (which I went with, to save weight). Having said all of this, the most impressive thing was the lead time. These parts are build to order, and I literally ordered my suspension one week ago, today! Yes, they built, powder coated, packaged, shipped my suspension components (RAM 1500 Track rear trailing arm full set in 7075 aluminum, and front upper control arms), AND they arrived, all within a week! Granted, that I’m only one state away, but WOW!!! One week?! Amazing! So, in sort: excellent products, which arrived excellently packaged (no damage, an boxes not over-stuffed with heavy suspension parts; three boxes total, as opposed to one super heavy one…my back thanks you), super quickly, and customer service that ANY business would be envious of….so, if you’re in the market, absolutely go with Core 4X4!
BZ
Brandon Zeiders Dec 23, 2025
Google
I ordered the jeep xj long arm lift kit. Control arms showed up first they turned out amazing!! Had some issues with the powder coating on the cross member and sent korby and the team at core4x4 an email. They got right on making me another cross member and sending it out. I appreciate all the help they've given me along the way. Very fast response thru emails. Build quality seems to be pretty dang nice!! Can't wait to install it and enjoy it!
JL
John Luna Nov 23, 2025
Google
Great team, and help to support my jeep and provide best stuffs
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.

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.
Hardware No Hardware, Complete Kit
Lift Size 0" — 6", 6"+
Vehicle Jeep Gladiator JT (20–Present)
Brand CORE 4X4
Series Crawl Series
Note to Core4x4: -
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