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

SKU: CRS-J-JL-K12 ★★★★★ (132 reviews)
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$ 1,889.96 1889.96 USD $ 2,519.95

$ 2,519.95

(Save 25%)

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Order today — ships within 1–3 business days
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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/1685/image_1920?unique=edc8f61

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)

$ 1,889.96 1889.96 USD $ 2,519.95

$ 2,519.95

(Save 25%)

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.
  • 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 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

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%
RG
Robert Van Gorder Apr 27, 2025
★ ★ ★ ★ ★ Google
Amazing service. Bought a track bar through Americantrucks.com and they sent it with the wrong size bushing sleeve. Korby at Core 4x4 was quick to get me the correct size and very responsive. Will definitely be using more of their stuff.
MM
Mike Martinez Aug 25, 2025
★ ★ ★ ★ ★ Google
Phenomenal company - very rare to come by in the automotive industry. Also very impressing. Let me start here. I got a set of yellow sway bar end links for my 19 ram DT (new body style) and let me tell you, I’m hooked. For numerous reasons. One the craftsmanship behind the product is unmatched for sure for without breaking the bank. 2ndly, they stand behind their product. Had a very minor issue and it was resolved in a blink of an eye!!! Insane. Just because of what i listed above i will forever spend my money with core 4x4! And i think you should too! I have no affiliation at all with this company besides being a consumer. I will be ordering my yellow UCAs and the rest of my rear suspension from them here shortly! Korby on the other hand. The representative that helped me went above and beyond FAST. I hung up the phone with him, and with in no lie 3 minutes he was calling back with an answer. GREAT GREAT GREAT customer service, Korby you and core 4x4 are what give us hope in the car community! With much love and great health to you all!!
Review photo 1
ST
Sal Torres May 27, 2025
★ ★ ★ ★ ★ Google
upper control arms look great and went on easy.. only reason I gave 4 stars and not 5 is because of a shipping issue which put my build a week behind. The issue was resolved quickly and painlessly, great customer service. Only time will tell how control arms perform but they look great and like they will go above and beyond control arm demand.
AM
Adam M Sep 24, 2025
★ ★ ★ ★ ★ Google
First time buying from Korby @ Core 4x4 and it’s being nothing short of a great experience. I bought the non adjustable Trail kit for my 5th Gen Ram 1500 with a 2” lift. The welds look great, nice powder coat finish and quality bushing. Had some trouble fitting the grease nipples due to the powder coating but a thread tap would fix that. They fit easily and perform great. I felt the improvement straight away. No more wheel hop on hard acceleration which was my main reason for the purchase. I was missing some smaller bushings needed for the 5th Gen and Korby’s custom service was on point, with responsive emails and mailing out the missing parts straight away. Very happy with their products and customer service. Highly recommended company👌🏽
Review photo 1 Review photo 2 Review photo 3 Review photo 4
AH
Abbey Hiett Mar 25, 2019
★ ★ ★ ★ ★ Google
Company finally made things right
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.
DA
Dastrup Auto Mar 25, 2019
★ ★ ★ ★ ★ Google
I have bought a bunch of sets of arms, track bars and even had custom work done by Core 4x4. Just yesterday, Spence and Cam delivered an awesome cross member they designed and built for me! All of their products have been exceptional! I have personally seen their progression with design changes/updates. They truly take pride in their work and products. Quality control is second to none! They’ve also helped me diagnose issues with different jeeps I’ve had, as well as Dodge/Rams. These guys know their stuff! Really! I trust them whole heartedly and absolutely love their products/quality of work! I’ve referred many people, and will always continue to do so. Keep up the good work Core4x4!
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.
M
Matt Mar 23, 2024
★ ★ ★ ★ ★ Google
The best products on the market. 95% of my xj is core 4x4 products
RH
Rex Hodges Jun 26, 2025
★ ★ ★ ★ ★ Google
After ordering an upper and lower adjustable control arm kit manufactured by CORE 4X4 from a jeep parts distributor who's intials are E.T., they came with 3 of the threaded ends missing. After over 2 months of phone calls and emails to this E.T. company nothing was resolved. I finally decided to call CORE 4X4 myself and tell them my dilemma. I spoke with a very personable and professional gentleman named Korby, who is one of CORE 4X4's representatives, after a brief discussion of what I went thru he simply asked me for a picture and some measurements and the items I was missing and asked if I could cover ONLY the cost of shipping and I had my missing parts in exactly 1 weeks time. This company not only builds all it's parts in the U.S.A., they stand behind their products with great customer service and life time warranty. My experience with this company and their Rep Korby was fantastic. I would definitely recommend CORE 4X4 to anyone who needs parts for any 4x4 projects. You just can't beat their quality and service. Rex Hodges Valparaiso, Indiana

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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