8 Best Adjustable Control Arms For JK In 2021


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Talk about Jeep Wrangler JK and we conjure up images of a beast-like vehicle tearing through tough and challenging terrain. Well, that’s the impression most of us have about JK- a jeep built in a way to handle rough off-roading and hard wheeling experiences with ease.

While jeeps are indeed the bad boys built for the rowdy and untamed trails, you can significantly improve directional stability and ensure better handling with a new control arm kit. When you plan to do some serious off-roading, you will need to add an aggressive lift system to increase ground clearance and suspension travel.

Some people also invest in a lift system to fit larger tires for off-roading trips and make their Wrangler look more muscular. An aggressive lift system of a jeep needs control arms that will not suffer from axle binding, and protect your suspension system from any wear and tear

With a set of best adjustable control arms for JK, you can reach any destination hassle-free and safely, despite the poor road conditions. As the control arms tend to wear out quickly, jeep experts advise users to replace them from time to time to avoid any issues.

If you are in the market to look for the best control arms to suit your vehicle, this can be tricky and confusing for you. To make your job easier, we have reviewed more than a dozen brands and models to create a list of the most recommended ones for you. Read on to find a detailed review of each product handpicked by our team after in-depth analysis and comparisons.

Editor’s Top Pick

For those who don’t have the time to read this until the end, we recommend the Raptor Series 170107-429800 Heavy Duty Adjustable Control Arm, a complete kit that contains 8 pieces of adjustable control arms (front and rear, lower and upper) to add more strength and durability to your jeep.

If you are looking for separately adjustable control arms instead of a complete kit, we recommend the Rough Country that comes with various parts to suit a Jeep Wrangler JK. Read on to find the various Rough Country adjustable control arms reviewed by s below.

#1. Rusty’s Off-Road Adjustable Rear Upper Control Arms Jeep Wrangler JK

The first product on our list is the adjustable rear upper control arms for Jeep Wrangler JK by Rusty’s Off-Road, a US-based company that makes jeep parts and accessories.  The arms are designed to fit the front lower control arms position of 2007-2017 Jeep Wrangler JK edition.

Made in the USA, this pair of control arms are made of two-inch DOM Tubing and the forged end is tested to withstand more than PSI. These arms include factory OEM-quality bushings on both sides, and the powder coating in a glossy black finish lends it an aesthetic appeal.

The arms use 1.25-inch x 12 threads on both the forged ends for enhanced strength and better adjustability. The forged ends are perfectly secured with the supplied jam nuts for more reliability. The product comes well packaged in foam to ensure that the arms don’t bang during the transit and get damaged.

Product features and specifications

  • Measures 26 x 4 x 6 inches
  • Weighs 22 pounds
  • Made of 2-inch DOM Tubing
  • OE quality Clevite rubber bushings
  • 2 inches of adjustment to fine-tune caster, driveline angles, wheelbase
  • Made in the USA

User/ customer reviews

Users who go trail running and mild offroad often have said that they find the adjustable control arms just perfect to rotate the pinion angle for a double Cardan driveshaft. People have also said that these control arms with OEM quality rubber ends work great at improving overall performance.

Conclusion

The Rusty’s Off-Road Adjustable Rear Upper Control Arms are great quality and well-built to meet the standards of Jeep Wrangler JK. The installation part is easy for anyone who knows jeep mechanics. Overall, we feel that this product offers good value for money to users.

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#2. Rough Country Front Upper Adjustable Control Arms (fits) 2007-2018 Jeep Wrangler JK

The front and upper adjustable control arms by Rough Country are designed to perfectly fit the 2007-2018 Jeep Wrangler JK. They feature a ball-in joint and have a considerable 2.5″ diameter body and 1.25″ threads. These X-Flex Joints offer a wide range, safety, and strength for all off-road applications.

The upper arm X-Flex joints are designed to pivot up to twenty degrees, and the lower arm joints can easily pivot up to a 35-degree range. Both arms are fully greasable and this helps in smoother performance. It also ensures a greater articulation off-road.

The installation part is easy and does not require any intricate tools or drilling to fit with Jeep Wrangler JK. We are impressed to find that the manufacturer has a lot of faith in their products and they back it up with a lifetime warranty.

Product features and specifications

  • Measures 25.5 x 5.75 x 6 inches
  • Weighs 13.95 pounds
  • Fully greaseable
  • Greater articulation off-road
  • Fits 2007-2018 4WD Jeep Wrangler JK (2 Door)
  • Fits 2007-2018 4WD Jeep Wrangler JK Unlimited

User/ Customer reviews

Jeep experts are impressed with these control arms that can be installed even without cutting/disassembling (although the instructions say so), some said that they did not even need to look at the directions. A few users have said that if you are jacked up then you will need these arms to bring the axle back into alignment.

Conclusion

The brand Rough Country itself suggests that they expertise in parts suitable for trail riding and tough terrains adventure. This front upper control arms set is perfectly designed to fit the 2007-2018 Jeep Wrangler JK. Overall, at this price, it gives you great value for money.

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#3. Rough Country Rear Lower Adjustable Control Arms (fits) 2007-2018 Jeep Wrangler JK

Having reviewed the front upper control arms by Rough Country, let’s also take a look at the rear lower counterpart. The rear lower adjustable control arms let you fine-tune the driveline geometry in your Jeep Wrangler JK.

These are 100% bolt-on control arms used to easily replace the factory rear lower control arms on the jeep to make it ready for your off-road experience. They also come with Clevite brand, factory-style rubber bushings along with X-Flex joints for a more stable, smooth, silent, and safe ride.

The control arms are specially designed by Rough Country to improve off-road articulation and ensure on-road ride comfort with the help of driveline angles optimization. The product comes backed by a solid lifetime manufacturer warranty against any defects.

Product features and specifications

  • Measures 25.5 x 5.75 x 6 inches
  • Weighs 23.9 pounds
  • Fully greaseable
  • Lift Height Range 2-4 inch, 3.5-6 Inch
  • Lifetime manufacturer warranty
  • Fits 2007-2018 4WD Jeep Wrangler JK (2 Door)
  • Fits 2007-2018 4WD Jeep Wrangler JK Unlimited

User/ Customer reviews

As per users, the adjustable design of this rear lower control arms let you precisely dial in your suspension to maximize the driveline-angles to fit your Jeep’s lift. People with experience in a jeep, repairs have said that the installation is hassle-free and takes about 3-4 hours.

Conclusion

This pair of rear lower adjustable control arms by Rough Country are one of the best jeep parts to you can buy to improve your off-road experience. Although these jeep parts don’t come cheap, they are not too much a price to pay when you compare it to the end-results received. 

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#4. Freedom Off-Road Adjustable Front Upper Control Arms

This Freedom Off-Road adjustable control arms are one of the best out there but before getting it you must ensure that your JK jeep’s directional stability is upgraded for the installation. These arms are designed to only work with a 0 to 6.50-Inch Lift and they significantly improve the overall steering and handling of the jeep.

These heavy-duty and adjustable control arms are engineered with high structural rigidity to stay corrosion resistant in all weather conditions. Each arm sports a black powder-coated finish to sustain any form of rust, chipping or abrasion. They are furnished with rubber bushings for higher load-bearing capacity and enhanced tear strength.

Both front and upper control arms are designed for simple and easy installation, without requiring any modifications. Anyone with light to moderate mechanical skills can perform the installation job. The arms fit directly into the factory mounting points of jeep JK. The manufacturer stands behind the product with a lifetime warranty.

Product features and specifications

  • Adjustable for 0-6.5” lift
  • Lifetime warranty
  • Rubber bushings
  • Heavy-Duty Construction
  • Black Powder-Coated Finish
  • Bolt-On Installation
  • Comes in a pair

User/ Customer reviews

Most users have said that the control arm set comes well packaged and includes essential hardware tools (one nut and bolt each) to do the installation, however, you will need the factory nut and bolt too. Jeep experts have also mentioned that the arms are visibly stronger and 50% heavier than the factory parts. Users love that all parts are properly painted and the welds look aesthetically pleasing. 

Conclusion 

The Freedom Off-Road adjustable control arms are beefy, strong, and well-designed to fit the needs of your jeep Wrangler JK. Overall, they deliver a significantly improved performance on the trails after the installation and look great too. At this price, you not only get a good product but also great customer service.

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#5. Raptor Series 170107-429800 Heavy Duty Adjustable Control Arm

This is a complete Raptor Series kit that includes front and rear, as well as, lower and upper control arms designed to fit with Jeep Wrangler JK’s 0-6 inch lifts. These control arms exhibit flexibility beyond the factory arms, and provide adjustment and stability needed for challenging trails.

Made of heavy-duty tubular steel and firm shaft construction, the adjustable control arms are built to take a lot of beating without giving up. The arms are coated to protect them from debris and corrosion attacks. They are built up to the off-road premium manufacturer standards and put to numerous tests to ensure their endurance capacity.

Both the upper and lower control arms enable appropriate positioning of the axle housing and pinion angle, without requiring any cuts or modifications. The threaded shaft ensures accurate adjustments, improves traction, and facilitates greater articulation. With a direct bolt-on replacement, the installation of the arms in the place of factory ones becomes easy.

Product features and specifications

  • Measures 28 x 7 x 14 inches
  • Weighs 90 pounds
  • Smooth Black Powder Coated
  • 8 pc Adjustable Control Arm Kit
  • Adjustable upper and lower control arms
  • Heavy-duty tubular steel construction

User/ Customer reviews

Users find them the Raptor Series control arms to be great quality with grease fittings enabling them to grease the arms when needed. Most people were able to do the installation easily with the hardware included and they achieved a proper alignment with the lift kit on their jeeps.

Some users have also mentioned that after installation the difference from the stock arms is visible as the rides are smoother, bumps not that rough, and less squeaking noise.

Conclusion

The Raptor Series control arms kit feels heavy-duty and reliable the moment you hold them in your hands. They offer a quick and reliable upgrade from your stock arms, making your jeep JK ready to take on the more difficult terrains with confidence. Overall, we feel this is a great value product at this price.

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#6. Rubicon Express RE3757 Rear Upper Super-Flex Adjustable Control Arm for Jeep JK

When you want to improve the performance of your Jeep Wrangler (2007-2018) JK’s suspension, this rear upper control arm from the house of Rubicon Express comes handy. These controls are specially engineered to help the tires move up and down evenly even in the most rugged terrains to give you a smoother ride.

Built as per the OEM standards, the Rubicon control arms are known to extra flex when maintaining the durability and ensuring good handling capability. Made from sturdy yet lightweight Chromoly tubular steel and a chromium/molybdenum, the control arms are built to last for long.

The adjustable control arms boast a silver powder coat finish that not only boosts the overall appearance but also ensures resistance to corrosion. There’s a threadable steel insert that enables adjustable preload and also helps in easy maintenance of the arms. The manufacturer offers a limited lifetime warranty against any damage caused by defects in craftsmanship or materials.

Product features and specifications

  • Sturdy Chromoly Steel Construction
  • Mounting hardware and installation instructions
  • Finished in Silver Powdercoat
  • Spherical Rubber Bearings
  • Fits 2007-2018 Wrangler JK
  • Limited Lifetime Warranty
  • Engineered for Rough Terrain

User/ Customer reviews

Users find this a great replacement for worn original control arms or as an upgrade to improve and enhance the capacity of Jeep Wrangler JK. A few customers have mentioned that the arms work great even after banging a few nasty obstacles on difficult terrain.

Beginners with less intricate knowledge find the installation work easy with the mounting hardware included and the complete user manual with simple instructions.

Conclusion

The Rubicon Express RE3757 rear upper adjustable control arms are heavy and well-built to serve their purpose well by improving the performance of the jeep. Installation is simple and getting the proper alignment doesn’t take long. Overall, we feel that this product offers a good price to performance ratio. 

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#7. Rough Country Front Lower Adjustable Control Arms (fits) 2007-2018 Jeep Wrangler JK

If you are looking for a front lower set of adjustable control arms, this pair by Rough Country stands tall as one of the best available online. These control arms feature a 2.5in diameter body, ball-in joint, and massive 1.25in threads for enhanced range, safety, and strength in diverse terrains.

The Upper Arm X-Flex Joints are designed in a way to pivot up to twenty degrees and the lower arm joints achieve a 35 degrees pivot range. This helps in a much better articulation off-road. We are impressed to find that the manufacturer stands behind the product with a lifetime warranty against any defects.

Product features and specifications

  • Measures 25.5 x 5.75 x 6 inches
  • Weighs 23 pounds
  • Lifetime Warranty
  • Fully grease-able
  • Greater articulation off-road.
  • Upper joints pivot up to 20 degrees
  • Lower joints pivot up to 35 degrees

User/ Customer review

Jeep JK owners who installed the front lower adjustable control arm have said that these parts are beefy and well-built to hold up pretty nice with the jeep. Customers have also mentioned that setting them up and installing the parts was pretty easy, even for the amateurs. A few users have warned about tightening carefully as they may not get threaded too far.

Conclusion

This Rough Country upper-lower adjustable control arms are what you need to get a proper alignment on the lifted jeeps and improve your vehicle’s performance. As the arms come backed with the manufacturer’s lifetime warranty, you don’t have anything to lose.

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#8. TeraFlex 1455000 JK Complete 8 Adjustable Flex Arm Kit

When you don’t wish to compromise with quality and money is not a constraint, we suggest the TeraFlex 1455000 JK Complete 8 Adjustable Flex Arm Kit for your Jeep Wrangler. This FlexArm system proves to be tough as nail and comprise of three various end types – rubber bushing ends, solid forged steel and urethane bushing ends.

Besides being well-built, the control arms also feature grease fittings and solid steel shank to ensure that the joints remain properly lubricated. This arm kit provides up to four inches of adjustment to ensure that the aggressive systems do not mess up with JK’s drive train angles.

The kit allows you to set up the suspension for better on-road usability and extreme off-road trail riding. This TeraFlex FlexArm system also helps you correctly set the caster and pinion angles to diminish any driveline and tire damage. It also significantly improves the overall jeep JK’s suspension and steering performance.

Product features and specifications

  • Measures 26 x 13 x 6 inches
  • Weighs 85 pounds
  • Made of Solid Steel
  • 8 adjustable front and rear lower and upper FlexArms
  • Easy to adjust
  • Simple Install
  • Rubber Bushings
  • Urethane Rod Ends
  • Works with Any Suspension Lift
  • Fits 2007-2018 Wrangler JK Models

User/ Customer reviews

Most customers have said that the product comes very well packed with all the hardware tools, parts, and user manual containing instructions for the installation process. Several users have said that the performance of their jeep Wrangler JK improved noticeably after installing these arms and even after taking a lot of beating, they still work fine.

Conclusion

The TeraFlex 1455000 JK Complete 8 Adjustable Flex Arm Kit is expensive than many other adjustable arms available out there. However, the fact that this is a complete arm set, with essential hardware components that are so well-engineered to give your jeep a new lease of power makes it worth investing in. Overall, we recommend this product for serious jeep owners who will do anything to add more years to their favorite drive.  

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Buying Guide: Things To Consider When Looking For Adjustable Control Arms

The products we have shortlisted and reviewed above are all suitable to work with the lift system in your Jeep Wrangler JK. However, the product that matches your specific requirement may be different from others, so considered these factors before choosing one.

#. Material

The first thing to consider is the material out of which the control arm is made. There are three different materials normally used and they are cast aluminum, iron, and stamped steel. To choose the most suitable control arm for your jeep, consider your driving conditions.

If you drive in harsh conditions, you will need specific control arms such as the ones made from aluminum that is best for tough weather. Cast iron arms are sturdy and best suited for harsh driving conditions, while the steel arms are made for different conditions, but they tend to rust easily.

#. Jeep model, year, and type

When replacing adjustable control arms with the stock ones for your jeep, you will need to pay attention to some crucial information. This includes choosing the right jeep model on the online website to get the specific auto parts that are compatible with your vehicle.

You should also consider which control arms you need to replace as they vary widely depending on the position where they are installed in the vehicle. For example, there are front, lower, and upper control arms, and also the ones used in the rear.

#. OEM Or Aftermarket

Jeep owners often face this predicament when choosing a performance part for their vehicle. The OEM or Original Equipment Manufacturer, as the name suggests does not come with any extra perks and they are usually pricey due to the brand name that they carry.

The aftermarkets parts, on the other hand, are cheaper and they also offer better performance than the OEMs. They are often more sturdy, functional, and durable in various conditions. The aftermarket manufacturers often compromise with a few features to ensure affordability and better performance.

#. Single control or a complete set

Users often wonder whether they should go for a single control arm kit (front upper, rear lower, etc) or a complete kit. The jeep experts recommend that you always opt for a complete kit when upgrading unless a part breaks down and you need to replace.

When you get a full kit, you get peace of mind that the parts are going to last for long and you will not need to replace them again very soon. Hence, this turns out to be more economical, plus a kit comes with all the essential hardware tools needed for installation.

#. Look into the features

Before choosing adjustable control arms for JK, you must also look into the features that the product comes with. Different models designed by different manufacturers come with diverse features such as extra durable or easier to install using advanced technologies. 

Some control arms may come with powder-coating to resist corrosion, hence they last for long. We suggest that you opt for parts that are much easier to install as a complicated set up will require you to hire a professional.

#. Price point

Given the fact that the control arms play a vital role in the performance of your jeep, it is not advisable to get a cheaper product to save a few dollars. We strongly suggest that you invest a little more to get durable and good quality arms that will last for a few years.

However, you must also bear in mind that higher prices do not guarantee the best quality. So, make sure you consider the above-mentioned factors and your budget to find the most reliable set that works for you.

Related Questions

What’s the benefit of installing Jeep Wrangler control arms

These control arms connect the wheels to the steering rack to keep the tires lifted from the ground and intact to the frame, without interfering with the rotating/handling of the vehicle. When the jeep runs on different types of terrains, the control arms offer enhanced support to the vertical axle’s motions. As the tires stay intact with the frames, this delivers a better performance during off-road driving.

What tools do you need for control arms installation

Most control arms are easy to install and they need only a few tools to accomplish the job.  If you are installing one at the entry-level, you will need some assistance from an expert. Some of the essential tools you will need are tire jack, some wheel chocks, a wrench, and a few basic tools.

What’s the difference between adjustable and non-adjustable control arms

An adjustable suspension system is required for the lowered Jeeps or rigs to ensure a high ground clearance for off-road trips. The non-adjustable suspension systems are suitable for the higher suspension lifts and they can be counter-intuitive if not fit properly. The non-adjustable control arms do not remove deflections in the pinion angle and this may damage the entire suspension system and drive train.

Are aftermarket control arm sets better

Yes, we suggest that you get the aftermarket control set arms although they are not original. They still offer excellent service and improve the performance of the jeep JK off-road. You can notice a difference in stability, traction, hard wheeling performance, torque, and durability after the installation.

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