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Adjustable
Control Arms

Jeep, Wrangler JK/JKU, 2007, 2018

Front
Set
SKU: CRL-J-JK-FS4

$719.95

Add hardware if you would like to replace the factory nuts and bolts.

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Crawl Series Front Control Arms Set Compatible with Jeep Wrangler JK Models (CRL-J-JK-FS4)

Experience Ultimate Flexibility and Comfort

Enhance your off-road capabilities while retaining a smooth ride on-road with our Crawl Series Front Control Arms Set. These control arms are designed specifically for Jeep Wrangler JK model years 2007-2018, and offer superior flexibility and on-road manners, providing a clear performance advantage over competitor aftermarket offerings. This set includes a Pair of Front Uppers (CRL-J-JK-FU2) and a Pair of Front Lowers (CRL-J-JK-FL2).

Engineered for Durability

Each part of our Front Control Arms Set is thoughtfully designed and crafted for extreme durability and performance. The lower control arms are made from insanely heavy duty 1.75″ OD DOM Tubing with a .313” wall thickness, while the upper control arms are made from 1.5″ OD DOM Tubing also with a .313” wall thickness.

The lower control arms feature the original Johnny Joints from Rock Jock 4×4 at both ends, ensuring superior performance and longevity. The Pair of Front Uppers (CRL-J-JK-FU2) features a U-bracket at the axle end, which attaches to the bushing already installed on factory axle, while the adjusting end, which connects to the body, is equipped with a Johnny Joint.

Adjustability

This Front Control Arms Set is designed to provide adjustability. It enables precise alignment correction and re-centers your front axle to accommodate lifts from 0 to 6 inches. For vehicles with lifts beyond 6 inches, please contact us for additional options and assistance. The Crawl Series delivers unmatched performance whether you’re riding at standard height or you’ve lifted your vehicle up to 6 inches.

Two-Stage Powder Coating

Our control arms are treated with a two-stage powder coating process that includes a base coat of zinc primer and a durable top coat in your choice of color from our 10 color options. This process maximizes durability and corrosion resistance.

Made in the USA

Our Crawl Series represents the pinnacle of American manufacturing. When you choose our Crawl Series, you are not only selecting a high-quality product but also supporting American-made products and benefiting from high manufacturing standards.

Convenient Installation

Our Front Control Arms Set is designed for a hassle-free installation using factory hardware. In case of rusted or stubborn bolts, we also offer optional new Grade 8 hardware kits, available separately, to facilitate a smooth installation process.

Key Features

  • Exceptional off-road flexibility and on-road comfort
  • Precise adjustability to cater for lifts from 0 to 6 inches
  • Constructed with Original Johnny Joints from Rock Jock 4×4
  • A complete package including a pair of front uppers and a pair of front lowers

Why Choose the Crawl Series Front Control Arms Set?

  • Ultimate Off-road Flexibility: With the Crawl Series Front Control Arms Set, experience improved off-road capabilities without sacrificing on-road comfort.
  • Two-Stage Powder Coating: Our control arms undergo a two-stage powder coating process, ensuring enhanced durability and corrosion resistance, with 10 color options to match your style.
  • Support American Manufacturing: By choosing our Crawl Series, you are supporting American manufacturing and benefiting from high-quality craftsmanship.

In Conclusion

Choosing the Crawl Series Front Control Arms Set means opting for superior off-road performance, unrivaled flexibility, and the durability of American engineering. With control arms designed to work together in concert, this set enables the optimal operation of your vehicle’s suspension. Upgrade your vehicle today with these adjustable control arms and experience the significant benefits of precise alignment, superior trail performance, and enhanced on-road manners.

SeriesCrawl
Color OptionsCharcoal, Orange, Yellow, Blue, Green, Light Green, Red, Purple, Black, White
Built With1.75" OD 5/16" Wall On lower control arms, 1.5" OD 5/16" Wall On upper control arms
Grease FittingsIncluded
Lift Range0" — 6", 6"+
Fixed End
Thread Size1" x 14 TPI on upper control arms, 1.25" x 12 TPI on lower control arms
Thread Length
Make Model Year
Jeep Wrangler JK/JKU 2007
Jeep Wrangler JK/JKU 2008
Jeep Wrangler JK/JKU 2009
Jeep Wrangler JK/JKU 2010
Jeep Wrangler JK/JKU 2011
Jeep Wrangler JK/JKU 2012
Jeep Wrangler JK/JKU 2013
Jeep Wrangler JK/JKU 2014
Jeep Wrangler JK/JKU 2015
Jeep Wrangler JK/JKU 2016
Jeep Wrangler JK/JKU 2017
Jeep Wrangler JK/JKU 2018

FAQs

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 lithium greases and anything red as this can prematurely deteriorate the internal components of the Johnny Joints and bushings used on our parts.

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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.

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