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

Dodge Ram 2500 03-07 6pc Heavy-Duty Adjustable Long Arm Upgrade Kit
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2,094.75 2094.75 USD 2,094.75

2,094.75

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Order today — ships within 1–3 business days
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Order by 3:00 PM MT today — we'll start tomorrow
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Lifetime warranty Fitment guarantee Ships from Orem, UT 4–8 hr install
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COLOR 11 colors — pick yours
https://core4x4.com/web/image/product.template/2679/image_1920?unique=edc8f61

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

Dodge Ram 2500 03-07 6pc Heavy-Duty Adjustable Long Arm Upgrade Kit
SKU: D-25-2003-LAK4
Pick your vehicle to confirm fit

2,094.75 2094.75 USD 2,094.75

2,094.75

COLOR 11 colors
Black Blue Charcoal Green Light Green Orange Purple Red White Yellow Custom Color - Other than what is listed above. Extra charge varies. We will reach out after order is placed.

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.

Order today — ships within 1–3 business days
Enter ZIP for arrival estimate change
Order by 3:00 PM MT today — we'll start tomorrow
See full timeline

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
Fully Adjustable 0-6" of lift
3 X-Series Options Only Core 4x4

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.

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!


  • Vehicle Fitment: Dodge Ram 2500 03-07 – Enhances suspension travel, axle control, and articulation, improving on-road drivability and off-road capability for a smoother, more comfortable ride under extreme conditions.

  • CORE Advantage: True 4-link design improves suspension geometry and axle control, reducing suspension bind and harsh angles while maximizing articulation for better handling and a more comfortable ride.

  • Adjustability: Fully adjustable for 0-6 inches of lift, ensuring proper axle centering and suspension geometry. Options are available for lifts over 6 inches upon request, providing flexibility for future modifications.

  • Construction: Built with heavy-duty DOM tubing (1.75” OD upper arms, 2.25” OD lower arms) and precision-cut 3/16” steel brackets. Rock Jock Johnny Joints at both ends provide maximum flexibility, adjustability, and durability for off-road performance.

  • Two-Stage Powder Coating: Zinc primer base and top coat available in 10 vibrant colors protect against corrosion and allow for personalized styling of your rig.

  • Warranty and Origin: Proudly manufactured in the United States, our product includes a lifetime warranty on all non-wear items, providing you with confidence and peace of mind in your purchase.

Built With

Front lower built with 2.25" x .25" wall DOM Forged Johnny Joint on the fixed and adjustable end with 1.25" x 12 TPI - 3.25" long threads.Front Upper built with 1.75" OD .313" Wall DOM tubing. Forged Johnny Joint on the fixed and adjustable end with 1.25" x 12 TPI - 3.25" long threads.

Make Model Submodel Years
Ram 2500 2003 - 2007

Construction & Materials

Front lower built with 2.25" x .25" wall DOM Forged Johnny Joint on the fixed and adjustable end with 1.25" x 12 TPI - 3.25" long threads.Front Upper built with 1.75" OD .313" Wall DOM tubing. Forged Johnny Joint on the fixed and adjustable end with 1.25" x 12 TPI - 3.25" long threads.

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
Placement on Vehicle Front Upper, Front Lower, Front
Mounting Style Bolt-On
Google

Reviews of Core 4x4

See all on Google
5.0
132 reviews
5
97%
4
2%
3
0%
2
1%
1
0%
BB
Brayden Brockey Mar 23, 2024
Google
Got a set of upper control arms for my xj, really impressed with the quality
Review photo 1
MN
Mike Nielsen Nov 23, 2025
Google
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!
EA
Eric Ahonen Mar 24, 2021
Google
Awesome control arms! My mechanic said “ your Jeep is pretty much bulletproof now.” And I just got the tier 1 arms! The people at the core 4x4 shop were really nice too. They were running behind on shipping, (which is understandable) so I decided to go pick it up because it was only an hour drive. They gave me a free $60 hardware kit for the inconvenience. Thanks core 4x4! You guys are awesome!!
AL
Andrew LaFave May 27, 2025
Google
I am really please with this company. Great product, i had an issue with a couple of the jonnhy joint bushings, they explained what had caused it and how to fix it. Within hrs of receiving my inquiry, i had heard back with the required info I needed. A couple hrs later problem was fixed and ready for the trail again. They care about heir product and their customers. Thanks crew, you rock
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.
C
caleb Mar 24, 2022
Google
Absolutely a great company. Ordered rear lower control arms with hardware but when i got it the hardware wasn't there but they sent it out right away and got a free t-shirt! Highly recommend.
MH
mark hinz Mar 2, 2026
Google
Went above and beyond to get the parts we needed to complete our customers build for Moab Easter safari cant thank you enough for all your hard work and efforts Thank you and look forward to working with you in the near future
JH
Joe Hu Sep 24, 2025
Google
Amazing! I put all my new control arms and it drives a lot smoother and looks great!!!
Review photo 1
JF
jacob fezza Mar 24, 2022
Google
I wanted to take a moment and give these guys a shout out, I’ve currently got, for my xj, their adjustable control arms, tier 4 adjustable track bar and adjustable leaf spring shackles. You can always count on a fair price, high quality products, and quick delivery. Keep up the great work guys, will definitely continue to shop with you
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.
Review photo 1

Specifications

Color Black, Blue, Charcoal, Green, Light Green, Orange, Purple, Red, White, Yellow, Custom Color - Other than what is listed above. Extra charge varies. We will reach out after order is placed.
Bracket Color Color, Black
Vehicle Ram HD 2500 (03–07)
Brand CORE 4X4
Year Range 03-07
Note to Core4x4: -
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