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SKU: CRS-J-JL-K12 ★★★★★ (132 reviews)
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$ 2,519.95 2519.95 USD $ 2,519.95

$ 2,519.95

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Order today — ships by Mon, Jun 1
Salt Lake City, UT change
Order by 3:00 PM MT today — we'll start tomorrow
See full timeline
Lifetime warranty Fitment guarantee Ships from Orem, UT 4–8 hr install
Free mounting hardware included — a $100 value
COLOR 11 colors — pick yours
https://core4x4.com/web/image/product.template/1685/image_1920?unique=d941913

12pc Cruise Series Adjustable Control Arm, Track Bar, Steering Kit

SKU: CRS-J-JL-K12
Pick your vehicle to confirm fit
Google 5.0 ★★★★★ (132 reviews)

$ 2,519.95 2519.95 USD $ 2,519.95

$ 2,519.95

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.
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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.
  • 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.
  • Drag Link Orientation
    Select flipped drag link only if your steering has already been converted to over-the-knuckle.
  • Stabilizer Clamp
    Match your steering stabilizer mounting style. Standard clamp, hydraulic assist, or tie rod clamp.
  • Note to Core4x4:

Select Color to see price and add to cart.

Order today — ships by Mon, Jun 1
Salt Lake City, UT change
Order by 3:00 PM MT today — we'll start tomorrow
See full timeline
Free mounting hardware included — a $100 value

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

Fix Wandering, Death Wobble, And Caster Deficiencies for Total Control

Take control of your Jeep Wrangler JL’s suspension and steering with the Cruise Series 12-Piece Kit, an all-in-one upgrade that corrects caster issues, eliminates wandering, prevents rut-following, and reduces death wobble. Designed as a complete suspension solution, this kit replaces every critical hard component—control arms, track bars, and steering—to restore precise handling, stability, and off-road capability. Whether you're driving on highways or tackling rough trails, this kit ensures your Jeep remains stable, centered, and responsive.

This fully adjustable system works for lifts from 0 to 6 inches, ensuring that your suspension is dialed in for optimal alignment, axle positioning, and steering precision.

Key Features Benefits

  • Corrects Caster Eliminates Wandering – The adjustable front lower control arms restore proper caster, improving steering feel and straight-line stability, reducing wandering and rut-following.
  • Reduces Prevents Death Wobble – The adjustable front track bar and reinforced steering components keep the axle centered and stable, minimizing the risk of violent front-end oscillations.
  • Full Axle Alignment Re-Centering for 0-6” Lifts – Adjustable track bars and control arms allow for pinion angle correction, axle positioning, and alignment restoration, reducing driveline vibrations and premature suspension wear.
  • Heavy-Duty 2.5-Ton Steering System – Built from aircraft-grade aluminum, this reinforced steering kit eliminates factory tie rod flex, delivering stronger, more precise steering control.
  • Recommended Pairing for a Complete Suspension Solution – Pair with the ELS4 End Link Set for enhanced handling, stability, and long-term durability, ensuring a fully optimized suspension system.

How This Kit Solves Common Jeep JL Suspension Issues

The factory Jeep Wrangler JL suspension suffers from insufficient caster angle, which causes wandering, poor steering control, and excessive steering corrections. Lifting the Jeep only worsens these issues, making proper caster correction essential for stability. This 12-piece system completely resolves these issues by restoring caster angle, axle centering, and steering precision, ensuring a smooth, predictable driving experience on any terrain. Additionally, death wobble—caused by loose steering components, misaligned track bars, and improper suspension angles—is greatly reduced or eliminated with this reinforced track bar and steering kit combination.

Durable Two-Stage Powder Coating

Every component undergoes a two-stage powder coating process for maximum protection against rust and wear:

  • Zinc Primer Base Coat – Shields metal from corrosion and environmental damage.
  • Durable Top Coat – Available in 10 color options for added protection and customization.

Proudly Made in the USA

Manufactured in Orem, UT, this kit is 100% American-made, ensuring superior craftsmanship, rigorous quality control, and support for local industries.

Optional Hardware Upgrade

This kit reuses factory hardware, but if your Jeep has rusted or worn-out bolts, we offer optional Grade 8 hardware kits for a hassle-free installation.

Notes: Some, (not all) factory axle mounts need to be "clearanced" to accept our larger bar. If needed, it is only a minor amount of trimming to be done. This applies to the front track bar only. Please see our Youtube channel for a video addressing this.

  • Vehicle Fitment: Jeep Wrangler JL 18+ – Provides full suspension and steering adjustability to correct caster, re-center axles, and eliminate instability for a smoother, more controlled ride.

  • CORE Advantage: Solves common Jeep JL suspension issues, reducing wandering, improving steering response, and helping mitigate death wobble by keeping axles properly aligned and the steering system reinforced.

  • Adjustability: Control arms fine-tune pinion angle and axle alignment for lifts from 0 to 6 inches, while adjustable track bars and a 2.5-ton aluminum steering kit maintain precise geometry and steering accuracy.

  • Construction: Heavy-duty steel control arms, DOM tubing track bars, aircraft-grade aluminum steering components, and premium polyurethane bushings provide unmatched strength, durability, and long-term performance.

  • 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 arms built with 1.875” OD 3/16” Wall DOM. Polyurethane Bushings on the fixed and adjustable ends with 1.25” x 12 TPI - 3.25” long threads.

Front Upper control arms built with 1.625” OD 3/16” Wall DOM. Welded U-bracket on the fixed end and a Polyurethane Bushing on the adjustable end with 1” x 14 TPI - 3.25” long threads.

Rear Lower control arms built with 1.875” OD 3/16” Wall DOM. Polyurethane Bushings on the fixed and adjustable ends with 1.25” x 12 TPI - 3.25” long threads.

Rear Upper control arms built with 1.625” OD 3/16” Wall DOM. Polyurethane Bushings on the fixed and adjustable ends with 1” x 14 TPI - 3.25” long threads.

Front Track Bar built with 1.5” OD 5/16” Wall DOM. Polyurethane Bushing on the fixed end and a Forged Johnny Joints on the adjustable end with 1” x 14 TPI - 2.32” long threads.

Rear Track Bar built with 1.5” OD 5/16” Wall DOM. Polyurethane Bushing on the fixed end and a Forged Johnny Joints on the adjustable end with 1” x 14 TPI - 2.32” long threads.

Make Model Submodel Years
Jeep Wrangler 2018 - Present

Construction & Materials

Jeep Wrangler JL / JLU 18+ 2pc Cruise Series Front Lower Adjustable Control Arms

Front Lower control arms built with 1.875” OD 3/16” Wall DOM. Polyurethane Bushings on the fixed and adjustable ends with 1.25” x 12 TPI - 3.25” long threads.

Jeep Wrangler JL / JLU 18+ 2pc Cruise Series Front Upper Adjustable Control Arms

Front Upper control arms built with 1.5” OD 5/16” Wall DOM. Welded U-bracket on the fixed end and a Polyurethane Bushing on the adjustable end with 1” x 14 TPI - 3.25” long threads.

Jeep Wrangler JL / JLU 18+ 2pc Cruise Series Rear Lower Adjustable Control Arms

Rear Lower control arms built with 1.875” OD 3/16” Wall DOM. Polyurethane Bushings on the fixed and adjustable ends with 1.25” x 12 TPI - 3.25” long threads.

Jeep Wrangler JL / JLU 18+ 2pc Cruise Series Rear Upper Adjustable Control Arms

Rear Upper control arms built with 1.625” OD 3/16” Wall DOM. Polyurethane Bushings on the fixed and adjustable ends with 1” x 14 TPI - 3.25” long threads.

Jeep Wrangler JL / JLU 18+ 2pc Heavy-Duty Tie Rod, Drag Link Steering Kit

Tie Rod and Drag Link made from 2" 7075 Aluminum. Tie Rod and Drag Link use Apex Chassis Forged Rod Ends.

Jeep Wrangler JL / JLU 18+ Cruise Series Front Heavy-Duty Adjustable Track Bar

Front Track Bar built with 1.5” OD 5/16” Wall DOM. Polyurethane Bushing on the fixed end and a Forged Johnny Joints on the adjustable end with 1” x 14 TPI - 2.32” long threads.

Jeep Wrangler JL / JLU 18+ Cruise Series Rear Heavy-Duty Adjustable Track Bar

Rear Track Bar built with 1.5” OD 5/16” Wall DOM. Polyurethane Bushing on the fixed end and a Forged Johnny Joints on the adjustable end with 1” x 14 TPI - 2.32” long threads.

Vehicle Jeep Wrangler JL / JLU (18–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 Cruise Series
Lift Size 0" — 6" or 6"+
Hardware No Hardware or Complete Kit
Drag Link Orientation Factory Mounting (under the knuckle) or Drag Link Flip w/ Tapered Sleeve And Drill Bit (over the knuckle)
Stabilizer Clamp Standard Clamp or Hydraulic Assist Clamp
Placement on Vehicle Front Upper, Front Lower, Rear Upper, Rear Lower, Front, Rear
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%
PM
Paul Melancon Aug 25, 2025
★ ★ ★ ★ ★ Google
Ordered a control arm and track bar kit for my WJ from Core 4x4 on Monday 7/28 and received it today, Friday 8/1. Im not a state or two away, im in CT aka the other side of the country. Communication is phenominal, emails were responded too in an hour or less. Parts arrived well packed, not damaged, and are great quality for my needs. There arent many companies left that service customers as well as Core 4x4 and i wont hesitate to check them out again if i need something else. Well done!
DS
Dana Smith Jul 26, 2025
★ ★ ★ ★ ★ Google
Excellent, strong, and durable products—perfect for both on-road and off-road applications. The customer service is outstanding—friendly, knowledgeable, and extremely helpful with understanding installation and ensuring I got exactly what I needed. I would definitely order again. Top-notch company with high-quality products made right here in the U.S.A.
Review photo 1 Review photo 2 Review photo 3
P
Paul Mar 24, 2023
★ ★ ★ ★ ★ Google
I've been having trouble with the track bar (on my 2nd gen Dodge) since I installed the 3rd gen Synergy adapter bracket and a 3rd gen stock bar.. oddly, they call it a '3rd gen bracket' and the stock 3rd gen bar doesn't quite fit, making contact with the bracket. I had attempted to clearance the bracket but it was still making contact and I could feel it over large bumps. I reached out to a lot of companies, but Core 4x4 offered to make a custom bar for the application with adjustability and dual Johnny joints. The first pass on it didn't work but they sent me out another passenger side end that made it fit incredibly well. This was all done solely over email/descriptions/pictures/measurements. Bar is super high quality and heavy duty, made in the US by a family owned company and carries a lifetime warranty. The customer service was responsive and superb, and the price was a lot less than I expected.
MN
Mike Nielsen Nov 23, 2025
★ ★ ★ ★ ★ Google
The customer service is first class. I had an issue with a track bar I installed on my F350. I don’t have any other Core 4x4 parts yet, but with the way I was treated, I know their parts are well done, because they went above and beyond to make sure I was made whole. They wouldn’t be in business if they had to take care of a lot of people like they took care of me. Will definitely be back when it’s time to build the Jeep!
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.
CW
Cody Whitlock Sep 24, 2025
★ ★ ★ ★ ★ Google
10/10 overall experience, shipping, customer service, and such a great product!
Review photo 1
BM
Brantly Musgrave Jan 22, 2026
★ ★ ★ ★ ★ Google
First and foremost would like to say that Core4x4s customer service is top notch and they definitely stand behind their warranty on products! Highly recommend using them for any of your off road needs! It’s rare to find a company now a days that backs their products and they do! Had a few issues with mounts and control arms and they handled it without hesitation! Thank you!
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.
CM
Craig MacIver May 27, 2025
★ ★ ★ ★ ★ Google
Got the CAMP version of adjustable control arms and track bars for our 03 TJ with a 3” lift and 33x10.5 KO 2’s. Super beefy bars, great fit and adjustability. Friendly advice and support from Korby at CORE 4X4. Good follow up as well. The ride quality is great as well as the handling. I think it all looks pretty good as well.
Review photo 1 Review photo 2 Review photo 3 Review photo 4
NP
Norb Pranger Oct 24, 2025
★ ★ ★ ★ ★ Google
Not sure where to start, Products or Service or Warranty. Products: I found Core4x4 through a very respected YouTuber in the Jeeping community. I purchased an entire set of Core4x4 Control Arms three years ago and have beat the daylights out of them and they are still in great condition. Now, I purchased another Jeep, this time for my daughter and bought yet another set of Control Arms because I know that these things can take a beating and stand up to it. I plan on replacing more parts on this TJ and my JL and will continue to buy from Core4x4. Service: This isn't some huge name conglomerate that treats you like you're just another customer. They are quick with responses and will always make things right should something be a problem. Oh and the quickness in which they ship their products is unmatched. I bought these CAs for my TJ on Thursday, I received them on Monday. Most other manufacturers will tell you weeks, they had them to me in 2 shipping days. Warranty: Seriously, a lifetime warranty? Yes please. Nothing more to say. I can't say enough about how great of a company this is. I've even spoken to the owner through email a few years back on some questions that I had. Support small American built businesses. P.S. Core 4x4, feel free to make me an ambassador and send me some swag :) .

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
Drag Link Orientation Factory Mounting (under the knuckle), Drag Link Flip w/ Tapered Sleeve And Drill Bit (over the knuckle)
Stabilizer Clamp Standard Clamp, Hydraulic Assist Clamp
Vehicle Jeep Wrangler JL / JLU (18–Present)
Brand CORE 4X4
Series Cruise Series
Note to Core4x4: -
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Frame Brackets Coming Soon Mounting + relocation brackets › Panhard Mount Coming Soon Track bar relocation mount › Axle Truss Weld-on axle reinforcement 2 › Rear Bumpers Heavy-duty rear bumpers 1 › Frame Stiffener Coming Soon Frame reinforcement plates for big lifts › Skid Plates Coming Soon Engine · Oil pan · Muffler · Gas tank › Exterior Accessories Bumper guards · Cargo racks · Light mounts 8 › Armor Axle trusses · Diff covers · Crossmembers 22 ›
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Drivetrain Coming Soon Axles · Gearing · Driveshafts ›
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