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2,094.75 2094.75 USD 2,094.75

2,094.75

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Dodge Ram 2500 03-07 6pc Heavy-Duty Adjustable Long Arm Upgrade Kit

SKU: D-25-2003-LAK4
Fits: 2003 - 2007 Ram HD 2500 Add vehicle

2,094.75 2094.75 USD 2,094.75

2,094.75

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.
  • Year Range
  • Bracket Color
    Powder coat color for control arms and track bars. Does not affect performance.
  • 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

Unleash the Full Potential of Your Dodge Ram’s Suspension

Upgrade your 2003-2007 Dodge Ram 2500 with the CORE 4X4 Long Arm Upgrade Kit, designed to provide superior strength, stability, and suspension travel. Factory short arms limit articulation, create a harsh ride, and reduce control under extreme conditions. Our true 4-link long arm design corrects suspension geometry, allowing for smoother suspension cycling, better axle control, and a more comfortable ride. Whether you’re conquering rocky terrain or hauling heavy loads, this bolt-on kit enhances both on-road drivability and off-road capability.

What’s Included?

  • Upper Long Arms – Heavy-Duty DOM Tubing
  • Lower Long Arms – Heavy-Duty DOM Tubing
  • Precision-Cut 3/16” Plate Steel Mounting Brackets
  • All Necessary Hardware for Installation

Key Features Benefits

  • Optimized Suspension Travel True 4-Link Design – Longer control arms reduce suspension bind, improving ride quality, axle control, and overall handling. Upper control arms feature inward bends for larger tire clearance and maximum articulation.
  • Heavy-Duty DOM Tubing Precision-Steel Brackets – Built from 1.75” OD upper arms and 2.25” OD lower arms, paired with 3/16” precision-cut plate steel brackets for extreme durability.
  • Rock Jock Johnny Joints at Both Ends – Provides maximum articulation, adjustability, and durability, ensuring long-term performance in off-road conditions.
  • Fully Adjustable to Maintain Suspension Geometry – Compatible with 0-6 inches of lift, keeping the axle centered and suspension geometry correct. Options available for lifts over 6 inches upon request.
  • Seamless Bolt-On Installation – No welding required, integrates seamlessly with the existing factory crossmember. For lifts under 3 inches, minor trimming of body mounts may be necessary for clearance.

Two-Stage Powder Coating for Maximum Durability

Every control arm and bracket undergoes a zinc primer base coat for superior corrosion resistance, followed by a durable topcoat available in 10 color options. This process ensures long-term protection and a customized look.

Proudly Made in the USA

All components in our Long Arm Upgrade Kit are manufactured in our Orem, UT facility, ensuring maximum strength, reliability, and long-term performance.

Effortless Installation

Includes all necessary installation hardware for a hassle-free upgrade. With a 100% bolt-on design, no welding is required, making installation simple and straightforward. For lifts under 3 inches, minor trimming of body mounts may be needed for clearance.

Conclusion

The CORE 4X4 Long Arm Upgrade Kit for 2003-2007 Dodge Ram 2500 is the ultimate enhancement for your truck’s suspension. With improved articulation, superior ride quality, and unmatched off-road capability, this kit is built for serious performance. Whether you're navigating technical terrain, towing, or daily driving, this upgrade provides maximum durability and control.

Upgrade today and experience the next level in suspension performance!


Make Model Submodel Years
Ram 2500 2003 - 2007

Vehicle Ram HD 2500 (03–07)
Brand CORE 4X4
Color Black or Blue or Charcoal or Green or Light Green 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.
Year Range 03-07
Bracket Color Color or Black

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.
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.
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!
MM
MIKE (Mike the Mechanic) Jul 26, 2025
Google
Amazing company and customer service!!!! I messed up on my order and the fixed it immediately. Would definitely recommend them. Can't wait to hit the trails with their product.
HK
Harold Kruder Mar 23, 2024
Google
I needed some parts and had to replace 1 lower control arm and their customer service is great. Helped with answering my questions and got parts shipped quickly.
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👌🏽
D
Don Jul 26, 2025
Google
Great shop, great parts and great service. You want to buy off this company and company’s like this!!!! Wish we had more companies as good as this one!! Thank you
DW
Derek Whitfield Nov 20, 2025
Google
Solid product, the lifetime warranty sealed the deal for me. Installed on my TJ and the ride quality improved noticeably. Shipping took a bit longer than expected but the parts were worth the wait.
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