Heavy-Duty Performance for Towing Hauling
Maximize the strength and durability of your Dodge Ram 3500 (2003–2007) with the Tow Series Adjustable Front Upper Control Arms. Specifically engineered for heavy-duty applications like towing and hauling, these control arms provide exceptional stability, strength, and adjustability for the toughest driving conditions. Whether you're tackling rough job sites or hauling heavy loads, these control arms are built to handle it all.
What’s Included
- Tow Series Adjustable Front Upper Control Arms (TOW-D-35-2003-FU2)
Key Features Benefits
- Heavy-duty DOM tubing construction – Built from 1.75” OD DOM Tubing with a 5/16” wall thickness, these control arms offer unmatched strength and durability for high-load applications.
- Rock Jock 4x4 Johnny Joints at both ends – Features fully greaseable and rebuildable joints, delivering increased articulation, long-term reliability, and reduced wear on suspension components.
- Effortless adjustability for precision alignment – Designed to correct wheel centering and caster for lifts from 0 to 6 inches. Threaded with left- and right-hand threads, allowing on-the-truck adjustments without removal. When paired with Tow Series Adjustable Lower Control Arms, these provide full suspension control and optimization. For lifts beyond 6 inches, contact us for additional options.
- Recommended pairing – Optimize your suspension setup by adding the Tow Series Adjustable Front Lower Control Arms (TOW-D-35-2003-FL2) for complete caster and wheel centering control.
Two-Stage Powder Coating for Maximum Protection
To ensure long-lasting durability, our control arms undergo a two-stage powder coating process. A zinc primer base coat enhances rust and corrosion resistance, while the durable topcoat, available in 10 color options, allows you to personalize your build.
Made in the USA
Proudly designed, engineered, and manufactured in Orem, UT, ensuring top-tier craftsmanship, strict quality control, and long-term reliability.
Optional Hardware Upgrade
Installs using factory hardware, but for a smoother installation and enhanced durability, we offer an optional Grade 8 hardware kit, available separately.
Conclusion
The Tow Series Adjustable Front Upper Control Arms (TOW-D-35-2003-FU2) are the ultimate upgrade for Ram 3500 owners looking for superior strength, adjustability, and long-term performance in heavy-hauling and towing applications. Upgrade today and take full control of your Ram 3500’s suspension for unmatched durability and stability!
| Make | Model | Submodel | Years |
|---|---|---|---|
| Ram | 3500 | 2003 - 2007 |
Each rebuild kit includes all necessary components to replace and restore wearable parts.
| Vehicle | Ram HD 3500 (03–07) |
| 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. |
| Lift Size | 0" — 6" or 6"+ |
| Arm Bend | No Bend or Inward Bend |
| Hardware | No Hardware or Complete Kit |
| Series | Tow Series |
| Year Range | 03-07 |
See It Installed
Install videos and build guides on our YouTube channel.
Watch more installs on YouTube
Reviews from Google
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132 reviews
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Ajay Paynter
Mar 4, 2026
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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
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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
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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.
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)
PB
Peter Busack
May 27, 2025
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Purchased a set of Trailing arms for my Ram 1500, quality is first class. I bought the ones with the Jonny Joints for more articulation and it appears from the construction I should get a lifetime of use, Zerk fittings are an added plus. Would defiantly recommend, and the the service team answered all of my questions.
LS
Leonard Smith
Jan 22, 2026
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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.
MM
Mike Martinez
Aug 25, 2025
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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!!
SC
Singer Heating and Cooling
Mar 25, 2018
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These guys are great. You can get them on the phone for support. This important and is not always the case with other custom parts builders. Their control arms are bomb proof and offer plenty of options. You can get real genuine Currie Johnny joints without paying the price for Currie arms.
GH
Gary Haag
Aug 25, 2025
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Ordered a set of Core 4x4 control arms for my 2006 Jeep TJ. These are some heavy duty quality control arms. Can't wait to get them installed. Great customer service too!
JH
Joe Hu
Sep 24, 2025
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Amazing! I put all my new control arms and it drives a lot smoother and looks great!!!
