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1,026.33 1026.33 USD 1,207.45

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Jeep Comanche MJ 86-92 7pc Crawl Series Heavy-Duty Adjustable Long Arm Upgrade Kit

SKU: CRL-J-MJ-LAK1
Fits: 1986 - 1992 Jeep Comanche MJ Add vehicle

1,026.33 1026.33 USD 1,207.45

1,207.45

Starting at $110/mo or 0% APR with . See if you qualify

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.
  • Long Arm Kit Front Track Bar Add-On
  • Axle End Upper Joint Upgrade
  • Note to Core4x4:

Select Color to see price and add to cart.

4–8 hr install Moderate Alignment recommended Lifetime warranty on all non-wear items Made In USA

Superior Suspension Performance for Your Jeep Comanche MJ

Upgrade your Jeep Comanche MJ with the Crawl Series Long Arm Upgrade Kit, designed to enhance axle stability, optimize suspension geometry, and improve overall ride quality. Unlike radius-style long arms that create single points of failure, this long arm design features both long lower and upper control arms, delivering superior strength, stability, and articulation for on-road comfort and off-road performance.

What's Included?

  • Long Lower Control Arms (2)
  • Long Upper Control Arms (2)
  • 1/4-Inch Plate Steel Brackets and Crossmember
  • 3-Piece High-Clearance Crossmember for Drivetrain Access

Key Features and Benefits

  • Long Arm Design – Maximizes suspension travel, improves ride quality, and eliminates the binding issues of short arms.
  • Heavy-Duty Construction – Built with .313-inch wall DOM tubing for superior strength and durability in extreme conditions.
  • High-Clearance Crossmember – Designed for improved ground clearance and obstacle navigation.
  • Adjustable for Various Lift Heights – Works with lifts from 2 inches and up, making it a perfect low center of gravity (LCG) option for better stability.
  • 100% Bolt-On Installation – Includes weld surfaces for those seeking additional reinforcement.

Built for Strength and Performance

The Crawl Series Long Arm Upgrade Kit is engineered for maximum articulation and control. With long upper and lower control arms, your Jeep’s suspension cycles on a longer arc, allowing for smoother and more predictable handling. This reduces driveline strain and provides better overall ride quality, whether on technical rock crawls or daily commutes.

Optional Axle Side Upper Bushing Upgrade

While factory bushings offer adequate performance, they can wear prematurely under extreme conditions. We offer two upgrade options:

  • Polyurethane Replacement Bushings – Provides increased durability and longevity.
  • Rock Jock Axle Side Johnny Joint Upgrade Kit – Replaces factory rubber with Johnny Joints for the best articulation and longevity (cutting and welding required for installation).

Two-Stage Powder Coating for Maximum Durability

Every component in this kit undergoes a dual-layer powder coating process for superior protection.

Zinc Primer Base Coat – Provides corrosion resistance to prevent rust.

Durable Top Coat – Available in 10 color options to customize your Jeep’s suspension.

Made in the USA

Proudly manufactured in Orem, UT, the Crawl Series Long Arm Upgrade Kit is built to the highest American craftsmanship standards. By sourcing local materials and maintaining strict quality control, we ensure a premium product that delivers unmatched durability and performance.

In Conclusion

The Crawl Series Long Arm Upgrade Kit is the ultimate suspension solution for Jeep Comanche MJ owners looking to enhance stability, ride quality, and off-road capability. With its long arm design, premium materials, and industry-leading durability, this kit is built to handle everything from daily driving to extreme trail adventures. Upgrade today and experience superior control, articulation, and performance on every terrain!


Make Model Submodel Years
Jeep Comanche 1986 - 1992

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

Vehicle Jeep Comanche MJ (86–92)
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"+
Long Arm Kit Front Track Bar Add-On No or Yes, include optional Track Bar
Axle End Upper Joint Upgrade No-Maintain factory mounting point or Yes-Include Johnny Joint Upgrade (CE-9102K1)

See It Installed

Install videos and build guides on our YouTube channel.

Watch more installs on YouTube
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Reviews from Google

See all on Google
5.0
132 reviews
5
97%
4
2%
3
0%
2
1%
1
0%
AP
Ajay Paynter Mar 4, 2026
Google
Great company, who worked with me on shipping parts to arrive in time for a show. When I explained my concern they went above and beyond to make it happen. Quality of the parts is top notch.
RC
Ryan Colligan Mar 4, 2026
Google
I have nothing but good things to say about Core 4x4. I have the crawler series on my JKU and we take it all over the place. These parts handle everything we throw at them.
MT
Marcus Torres Jan 15, 2026
Google
Best control arms I have installed on any of my builds. After running every major manufacturer, Core 4x4 is on par or better than all the high-end companies at a fraction of the cost. Lifetime warranty is the cherry on top.
AP
Ajay Paynter Mar 9, 2026
Google
Great company, who worked with me on shipping parts, to arrive in time for a show, when I explained my concern of possibly not getting the control arms in time. Quality is amazing on the part, affordable price for what you get, and the powdercoat is top notch, not a single issue with this product, would buy again.
N
Nick Sep 24, 2025
Google
I have a 2016 RAM 1500 Crew Cab and I replaced the rear upper and lower control arms also the pan hard track bar and also the sway bar and links for the rear with all I had the articulating bushings. The vehicle now has no body role. They are absolutely incredible if you get the control arms you gotta get the CORE 4 x 4sway bar end links don’t don’t try and be cheap and get Moog or something else you got to get articulating bushings get the core 4 x 4 ones they are the best. My truck drives now through the canyons like a BMW. I have Fox high-performance shocks on there as well with all the CORE 4 x 4 suspension parts and they are amazing. Well worth the money I would highly recommend anybody thinking about CORE 4 x 4 go with CORE 4X4 and if you can go with their articulating bushings, they’re unbelievable drives better now than my Escalades. Well planted no body role and smooth on the Highway unbelievable the difference they all made!! THANKS AGAIN CORE 4x4!!!!
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!
EL
Eric Labrum May 27, 2025
Google
Best customer service I have ever experienced. They are my go to source do to quality and service
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.
RD
Reagan D'mello Dec 23, 2025
Google
Love the product. Excellent customer support 👍🏽 …
DN
Devan Nelson Mar 25, 2019
Google
Had a great experience with Core 4x4, I desperately needed a custom track bar and found out just a couple days before Easter Jeep Safari. Spence was a huge help and made it happen with plenty of time to spare. Their parts are top notch!
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