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
Details
Core 4x4's Crawl Series rear lower control arms replace the worn factory stamped-steel arms on the Cadillac Escalade ESV (2003–2006). The factory arms use soft rubber bushings and a fixed length, so there's no way to re-align the rear axle after a lift or leveling kit. These Core 4x4 arms are a serious step up: DOM steel tubing and forged Rock Jock Johnny Joints at both ends for maximum articulation, with adjustable length to set rear axle alignment back to spec.
Includes: Rear lower control arms (pair); mounting hardware (bolts, nuts, and washers).
Specs:
- Tubing — 1.75 in. o.d. × 5/16 in. wall DOM steel
- Joints — forged Rock Jock Johnny Joints, both ends (double-threaded)
- Adjustable length — for rear-axle alignment
- Lift range — 0–6 in. and up
- Made in the USA
- Lifetime warranty — bend it or break it, we'll replace it
- Wear items (bushings, joints) — covered for 18 months
Notes:
- Hardware is included with your arms. If you ever need replacements down the road, the matching kit is available separately.
- Running a lift? The 4-piece rear set (CRL-G-800-ESV-RS4-Z55) adds the matching upper arms to replace all four rear arms in one job.
Parts:
- Forged Rock Jock Johnny Joint, right-hand — CE-9114 (1 per arm, 2 for the pair).
- Forged Rock Jock Johnny Joint, left-hand — CE-9114L (1 per arm, 2 for the pair).
- Replacement hardware kit — CRL-G-800-RL2-HWK.
Fits:
- Chevy Tahoe (2000–2006)
- Chevy Suburban 1500 (2000–2006)
- Chevy Avalanche 1500 (2002–2006)
- GMC Yukon / Yukon XL 1500 (2000–2006)
- GMC Yukon Denali / XL Denali (2001–2006)
- Cadillac Escalade / ESV / EXT (2002–2006)
- 1500-series only. Does NOT fit 2500-series HD.
Built With
Tubing: 1.75" OD, 5/16" wall DOM · Joints: Forged Rock Jock Johnny Joints, both ends (double-threaded)
| Make | Model | Submodel | Years |
|---|---|---|---|
| Cadillac | Escalade ESV | 2003 - 2006 |
Construction & Materials
Tubing: 1.75" OD, 5/16" wall DOM · Joints: Forged Rock Jock Johnny Joints, both ends (double-threaded)
| Brand | CORE 4X4 |
| Color | Black or Blue or Charcoal or Green or Light Green or Orange or Purple or Red or White or Yellow |
| Lift Size | 0" — 6" or 6"+ |
| Series | Crawl Series |
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.
Reviews of Core 4x4
5.0
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132 reviews
VK
Victor Keele
Sep 24, 2025
★
★
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Great customer service. I got my front upper and lower control arms and hardware on Friday afternoon. It didn’t come with instructions so I called Core 4X4 and they immediately e mailed me the instructions. Also, the kit I got had the spacers missing so I called. It was late Friday by thus time but they took care of the issue first thing Monday morning and I got the spacers on Tuesday. Great company.
GN
Glenn Nowosad
Jan 22, 2026
★
★
★
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I just finished installing the Peak 2.0 Front Suspension system with the Core 4x4 Blue Tacoma Rear Suspension system on my 2024 TRD Offroad Premium Tacoma. The two upgraded suspension systems really made a difference in how the ride feels, whether we’re off-road or on the road. A big thank you to Korby and the team at Core 4x4 for their support and for getting the shipping sorted out so quickly!
DR
David Rogers
Aug 25, 2025
★
★
★
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★
Ive had the front adjustable control arm kit in bright green for my 1996 ZJ.
Ive had the kit for about a year now and i have to say, im extremely impressed, over 1000 miles off-road and roughly 20,000 miles on the highway. These control arm kits for any vehicle built by core 4x4 are well worth the money, just be aware thereight be some minor scatches or chips from shipping ( but who should care about that if you're beating the crap out of em' they way they were built and designed for)
ZA
Zen Asher
Mar 23, 2025
★
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The quality and durability of the arms are the best. They are super heavy duty. And lifetime warranty is crazy
DN
Devan Nelson
Mar 25, 2019
★
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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!
MN
Mike Nielsen
Nov 23, 2025
★
★
★
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★
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!
GK
GLENN KOSZKA
Apr 27, 2025
★
★
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★
The folks at Core 4X4 are always wonderful to deal with. They explain your options and never pressure or rush things. The quality of the Core Control Arms is top shelf, especially if your goal is to stop wheel hop. I recommend Core 4x4 without reservation ! ! !
DD
Dmitriy D
May 27, 2025
★
★
★
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★
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.
LS
Leonard Smith
Jan 22, 2026
★
★
★
★
★
I don’t write reviews often, but Core 4x4 absolutely earned this one.
I recently ordered leaf spring mounts and realized after the fact that I messed up my order. Totally my mistake. Instead of giving me the runaround or pointing at a return policy, Core 4x4 emailed me back and forth, worked through exactly what I was doing with my build, and made sure I ended up with the correct parts.
That kind of customer service is rare these days — especially in the off-road world where a lot of companies stop caring once the order is placed.
The parts themselves are exactly what you hope for: solid, well-made, confidence-inspiring hardware that looks like it belongs under a vehicle that actually gets used. You can tell these are designed by people who understand suspension geometry and real-world abuse, not just CAD screenshots.
Mistakes happen — especially on custom or modified builds — and Core 4x4 handled mine like pros. Fast responses, clear communication, and a genuine effort to help me get it right.
If you’re on the fence: don’t be. Core 4x4 is the kind of company you want backing your build — the kind that treats customers like fellow enthusiasts, not order numbers.
MP
matthew patterson
May 27, 2025
★
★
★
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★
Ive used core products for my last two jeeps and now my ram. They’re parts are the absolute best quality youll find ANYWHERE. Top quality products and A+ custom service keeps the as my go Roger for any suspension needs.
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Specifications
| Color | Black, Blue, Charcoal, Green, Light Green, Orange, Purple, Red, White, Yellow |
| Lift Size | 0" — 6", 6"+ |
| Brand | CORE 4X4 |
| Series | Crawl Series |
| Tags | |
|---|---|
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