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SKU: CRL-J-JK-RTB1 ★★★★★ (132 reviews)
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LIFETIME WARRANTY
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FITS YOUR EXACT VEHICLE
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SHIPS IN 1–3 DAYS
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MADE IN UTAH, USA
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$ 329.13 329.13 USD $ 346.45

$ 346.45

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🔧 Built to order · Ships in 1–3 business days

COLOR 11 colors — pick yours
https://jerdev.core4x4.com/web/image/product.template/2037/image_1920?unique=9241c81
SKU: CRL-J-JK-RTB1
Fits: 2007 - 2018 Jeep Wrangler JK / JKU Add vehicle
Add Vehicle Google 5.0 ★★★★★ (132 reviews)

$ 329.13 329.13 USD $ 346.45

$ 346.45

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.
  • Note to Core4x4:

Select Color to see price and add to cart.

WHAT’S INCLUDED
4
Upper Control Arms
4
Lower Control Arms
2
Front Track Bars
2
Rear Track Bars
4
End Links

4–8 hr install Moderate 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
Ships in 3 Days From our UT facility
Fully Adjustable 0-6" of lift
3 X-Series Options Only Core 4x4

Why Builders Choose CORE 4X4

Warranty facts, not marketing language.

vs. MetalCloak

Their “lifetime” language refers to their service model. Actual parts warranty: 1 year. Ours: lifetime.

vs. Teraflex

Skip a maintenance interval? Their warranty voids. Ours doesn’t.

vs. Clayton Off Road

Clayton warrants their Johnny Joints for 90 days. We cover ours for life.

Enhance Your Stability and Control

Stability and control are paramount for off-road adventures, and the Crawl Series Rear Track Bar (CRL-J-JK-RTB1) is engineered to deliver both. Designed specifically for Jeep Wrangler JK models (2007-2018), this track bar ensures axle center alignment is maintained, providing superior handling and stability even over rough terrain or during aggressive cornering.

What's Included?

  • Crawl Series Rear Track Bar (CRL-J-JK-RTB1)

Key Features and Benefits

  • Exceptional Stability and Handling – Effectively minimizes body roll during cornering and maintains precise axle alignment, improving vehicle control in challenging off-road conditions.
  • Premium Construction for Durability – Constructed from 1.5” OD .313 Wall DOM Tubing and featuring a welded Johnny Joint at the fixed end and a forged Johnny Joint at the adjustable end, this track bar is designed to withstand extreme stress and perform reliably under demanding conditions.
  • Adjustability for Lifted Vehicles – Fully adjustable to accommodate lifts from 0 to 6 inches, allowing for precise axle re-centering and suspension geometry optimization. Custom solutions are available for lifts over 6 inches upon request.
  • Improved Suspension Harmony – Designed to integrate seamlessly with other Crawl Series components, this track bar works in unison with your suspension system to deliver consistent and predictable performance both on and off the trail.

Two-Stage Powder Coating

To ensure long-lasting durability and resistance to corrosion, every Crawl Series Rear Track Bar undergoes a two-stage powder coating process. A zinc primer base coat provides a strong barrier against rust, while the durable top coat offers an extra layer of protection. Available in 10 customizable colors, the finish not only enhances durability but also allows you to personalize your suspension components to match your Jeep’s aesthetic.

Made in the USA

Proudly designed and manufactured in Orem, UT, the Crawl Series Rear Track Bar represents the pinnacle of American craftsmanship. With meticulous attention to quality and performance, this product supports local industries while delivering exceptional reliability for your Jeep.

In Conclusion

Upgrade your Jeep Wrangler JK with the Crawl Series Rear Track Bar (CRL-J-JK-RTB1) for unmatched stability, durability, and performance. Built with heavy-duty materials, premium Johnny Joints, and full adjustability, this track bar enhances both off-road control and on-road comfort. Proudly made in the USA, it’s the perfect choice for Jeep enthusiasts who demand superior quality and reliability. Experience the Crawl Series difference and take your suspension system to the next level today.

 

Make Model Submodel Years
Jeep Wrangler 2007 - 2018

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

Master Rebuild kit for CRL-J-JK-RTB1 $ 42.00

Vehicle Jeep Wrangler JK / JKU (07–18)
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
Lift Size 0" — 6" or 6"+
Hardware No Hardware or Complete Kit

Select your lift size in Step 1 — the kit ships with the correct geometry for that height. If you’re running a non-standard setup, call us before ordering and we’ll confirm compatibility.

Death wobble is a geometry problem, not just worn parts. Cruise Series corrects caster angle and eliminates the flex points that let shimmy start. Replacing one part at a time delays the fix — this replaces the geometry.

Yes, if you’ve done a lift kit before. Full-day project. Watch the complete JT install walkthrough on our YouTube channel — most owners wrap it in a day. Any off-road shop can run it if you’d rather have it done.

Any non-wear component fails — we replace it. No mileage cap. No maintenance intervals to track. No fine print about voiding if you miss a service. Lifetime means lifetime.

Teraflex’s lifetime warranty voids if you miss a maintenance interval. MetalCloak’s actual parts warranty is 12 months — their “lifetime” language refers to their service program. No conditions here.

See It Installed

Install videos and build guides on our YouTube channel.

Watch more installs on YouTube
Google

Reviews from Google

See all on Google
5.0
★ ★ ★ ★ ★
132 reviews
5 ★
97%
4 ★
2%
3 ★
0%
2 ★
1%
1 ★
0%
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.
SA
Samuel “SamDaman904” Anscher Mar 23, 2024
★ ★ ★ ★ ★ Google
I meant to put this reviewing about a year ago now, but ever since I’ve had the core 4 x 4, upper and lower control arms on my 2017 ram 1500, they have worked flawlessly leave been on many offering chips, and I’ll definitely be buying new accessories from them in the future and their new upper control arms that they’re offering for all of the ram trucks. Fantastic customer service fantastic health very automotive, off-road, friendly, and any aftermarket thing for your truck or SUV that they currently have!
A
Adam Oct 24, 2025
★ ★ ★ ★ ★ Google
I couldn't have been more excited for the initial unboxing of these new Core 4x4 UCA's! They appear to be so well built and just a true quality product. Installation was a breeze and the initial testing with the forklift appears to have given me some additional flex with less binding on the rest of the components now that the geometry is back properly aligned. Time will tell how they hold up on my near future off-road adventures but I don't have any doubt that they are up to the task!
JI
Jerome Segura III Jun 26, 2025
★ ★ ★ ★ ★ Google
I bought the 16pc Cruise Series Adjustable Control Arm, Track Bar, Steering, End Link Kit to replace a worn budget 4" lift on my used JKU. These are top quality parts; very solid. Customer service is unsurpassed. They even matched prices on my order placed before the tax day sale. I made an error in ordering a drag link flip kit; they were quick to help me fix this too. There's peace of mind knowing these components are made in the USA. Thank you. 👍👍
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.
RM
R2d2 Movi78 Feb 21, 2026
★ ★ ★ ★ ★ Google
I’m extremely impressed with Core 4x4. The quality of their parts is outstanding — everything feels solid, well‑built, and engineered with real attention to detail. Shipping was fast and everything arrived perfectly packaged. Their customer service is just as good as their products: responsive, helpful, and genuinely committed to making sure you get exactly what you need. Overall, a top‑tier experience. I’ll definitely be buying from them again. Specially thank you Mr. Linscomb from Core 4x4. Arturo M.
TW
Travis Walker Sep 24, 2025
★ ★ ★ ★ ★ Google
I have nothing but great things to say about this company and their customer service. If you like American made products backed by warranty and amazing customer support, this is the company for you. I have a Lexus GX470 and love their rear control arms.
GV
Gil Valk Sep 24, 2025
★ ★ ★ ★ ★ Google
Excellent service, Prompt responses when needing technical assistance, Amazing looking parts that fit excellently. I would recommend them to anyone looking for suspension components. Also very well packaged when we received the shipment, which means no damage from shipping company!! We went with the Crawl Series double adjustable kit and it definitely looks killer on our build!!!
DD
Dmitriy D May 27, 2025
★ ★ ★ ★ ★ Google
Installed rear and upper control arms and track bar on my 3rd Gen 4RUNNER to align rear axle and restore factory wheel base after 3.5" lift. Car drives better than New! Improved handling cornering and overall driving. Very solid and high quality made product. Support is outstanding. Shipping extremely fast. Thank you so much. I wish you will have something new for my car.
N
niceguyr1 Mar 24, 2023
★ ★ ★ ★ ★ Google
I purchased upper and lower adjustable arms for my WJ and lowers were missing the spacers. I didn't know until 3 months later when I was installing them. With absolutely zero hassles they quickly sent me the missing spacers. Fantastic product and service! Huge thank you guys for the awesome service and parts!!! Customer service is quickly becoming a lost commodity and you guys gave me hope that it's still alive and well, you just have to buy from the right people... Thanks again for going above and beyond! 👍👍

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
Vehicle Jeep Wrangler JK / JKU (07–18)
Brand CORE 4X4
Series Crawl Series
Note to Core4x4: -
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