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SKU: TRL-D-35-2003-K5 ★★★★★ (132 reviews)
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LIFETIME WARRANTY
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FITS YOUR EXACT VEHICLE
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SHIPS IN 1–3 DAYS
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MADE IN UTAH, USA
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$ 974.21 974.21 USD $ 1,082.45

$ 1,082.45

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🔧 Built to order · Ships in 1–3 business days

COLOR 11 colors — pick yours
https://jerdev.core4x4.com/web/image/product.template/1618/image_1920?unique=608eb6f
SKU: TRL-D-35-2003-K5
Fits: 2003 - 2007 Ram HD 3500 Add vehicle
Add Vehicle Google 5.0 ★★★★★ (132 reviews)

$ 974.21 974.21 USD $ 1,082.45

$ 1,082.45

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.
  • Hardware
    Choose upgraded hardware if your factory hardware is worn, damaged, or missing.
  • Arm Bend
  • Lift Size
    Choose your current front lift height. Measure from center of wheel to fender if unsure.
  • Series
    Cruise: daily driving and light off-road. Camp: overlanding. Crawl: aggressive rock crawling.
  • Year Range
  • Note to Core4x4:

Select Color to see price and add to cart.

WHAT’S INCLUDED
4
Upper Control Arms
4
Lower Control Arms
2
Front Track Bars
2
Rear Track Bars
4
End Links

4–8 hr install Moderate 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
Ships in 3 Days From our UT facility
Fully Adjustable 0-6" of lift
3 X-Series Options Only Core 4x4

Why Builders Choose CORE 4X4

Warranty facts, not marketing language.

vs. MetalCloak

Their “lifetime” language refers to their service model. Actual parts warranty: 1 year. Ours: lifetime.

vs. Teraflex

Skip a maintenance interval? Their warranty voids. Ours doesn’t.

vs. Clayton Off Road

Clayton warrants their Johnny Joints for 90 days. We cover ours for life.

Restore Stability, Improve Handling, and Enhance Ride Quality

Upgrade your Dodge Ram 3500 (2003–2007) with the Trail Series Adjustable Front Suspension Kit, engineered to correct caster, eliminate wandering steering, and restore proper suspension geometry. Whether you're towing heavy loads, navigating job sites, or taking on off-road terrain, this kit provides exceptional durability, precise adjustability, and a more controlled ride for your truck.

What’s Included in the Kit?

  • Adjustable Front Upper Control Arms (TRL-D-35-2003-FU2)
  • Adjustable Front Lower Control Arms (TRL-D-35-2003-FL2)
  • Adjustable Front Track Bar (D-35-2003-FTB1)

Key Features Benefits

  • Heavy-duty DOM tubing construction – Built from 1.75” OD DOM Tubing with 5/16” wall thickness, ensuring maximum strength and durability for demanding applications.
  • Hybrid joint design for strength comfort – Equipped with Rock Jock Johnny Joints on the adjustable ends for maximum articulation and tapered polyurethane bushings on the fixed ends for a smoother, quieter ride with reduced vibration.
  • Precision adjustability for complete suspension control – Allows caster correction, pinion angle tuning, and axle centering, optimizing handling and drivability.
  • Eliminates steering instability improves ride quality – Addresses wandering, bump steer, and poor steering return, ensuring a more responsive and stable driving experience.

Optional Hardware Upgrade for Hassle-Free Installation

Installs using factory hardware, but for increased durability and proper alignment retention, an optional Grade 8 hardware kit with a cam bolt delete is available separately.

A Game-Changing Upgrade for Heavy-Duty Performance

Lifting your Dodge Ram 3500 or frequently carrying heavy loads can cause axle misalignment, suspension stress, and poor steering response. The Trail Series Adjustable Front Suspension Kit solves these issues, ensuring your truck tracks straighter, steers more precisely, and remains stable under load. Whether you're hauling, towing, or off-roading, this kit delivers exceptional control and handling improvements.

Highly Durable Two-Stage Powder Coating

Each component undergoes a two-stage powder coating process for superior durability. A zinc primer base coat provides advanced corrosion resistance, while a durable topcoat, available in 10 colors, allows customization to match your build and style.

Proudly Made in the USA

All components are designed, manufactured, and tested in Orem, UT, ensuring top-tier craftsmanship and strict quality control while supporting American manufacturing.

Final Thoughts

The Trail Series Adjustable Front Suspension Kit is an essential upgrade for Dodge Ram 3500 owners looking to enhance control, correct alignment, and improve steering stability. Built to handle towing, hauling, and off-road challenges, this kit ensures precision alignment, superior handling, and long-term durability. Upgrade today and experience the ultimate in suspension performance!


Make Model Submodel Years
Ram 3500 2003 - 2007

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

Master Rebuild kit for TRL-D-35-2003-K5 $ 180.00
Master Rebuild kit for TRL-D-35-2003-FL2 $ 72.00
Master Rebuild kit for TRL-D-35-2003-FU2 $ 72.00
Master Rebuild kit for D-35-2003-FTB1 $ 36.00

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.
Hardware No Hardware or Complete Kit
Arm Bend No Bend or Inward Bend
Lift Size 0" — 6" or 6"+
Series Trail Series
Year Range 03-07

Select your lift size in Step 1 — the kit ships with the correct geometry for that height. If you’re running a non-standard setup, call us before ordering and we’ll confirm compatibility.

Death wobble is a geometry problem, not just worn parts. Cruise Series corrects caster angle and eliminates the flex points that let shimmy start. Replacing one part at a time delays the fix — this replaces the geometry.

Yes, if you’ve done a lift kit before. Full-day project. Watch the complete JT install walkthrough on our YouTube channel — most owners wrap it in a day. Any off-road shop can run it if you’d rather have it done.

Any non-wear component fails — we replace it. No mileage cap. No maintenance intervals to track. No fine print about voiding if you miss a service. Lifetime means lifetime.

Teraflex’s lifetime warranty voids if you miss a maintenance interval. MetalCloak’s actual parts warranty is 12 months — their “lifetime” language refers to their service program. No conditions here.

See It Installed

Install videos and build guides on our YouTube channel.

Watch more installs on YouTube
Google

Reviews from Google

See all on Google
5.0
★ ★ ★ ★ ★
132 reviews
5 ★
97%
4 ★
2%
3 ★
0%
2 ★
1%
1 ★
0%
A
Adam Oct 24, 2025
★ ★ ★ ★ ★ Google
I couldn't have been more excited for the initial unboxing of these new Core 4x4 UCA's! They appear to be so well built and just a true quality product. Installation was a breeze and the initial testing with the forklift appears to have given me some additional flex with less binding on the rest of the components now that the geometry is back properly aligned. Time will tell how they hold up on my near future off-road adventures but I don't have any doubt that they are up to the task!
RH
Roger Hooks Jun 26, 2025
★ ★ ★ ★ ★ Google
2018 Ram 2500 Rear Control Arms and Rear track Bar been running for about a year, Great Solid Products and great one on one customer service, same day response with issue resolved! Thanks Korby!
NP
Norb Pranger Oct 24, 2025
★ ★ ★ ★ ★ Google
Not sure where to start, Products or Service or Warranty. Products: I found Core4x4 through a very respected YouTuber in the Jeeping community. I purchased an entire set of Core4x4 Control Arms three years ago and have beat the daylights out of them and they are still in great condition. Now, I purchased another Jeep, this time for my daughter and bought yet another set of Control Arms because I know that these things can take a beating and stand up to it. I plan on replacing more parts on this TJ and my JL and will continue to buy from Core4x4. Service: This isn't some huge name conglomerate that treats you like you're just another customer. They are quick with responses and will always make things right should something be a problem. Oh and the quickness in which they ship their products is unmatched. I bought these CAs for my TJ on Thursday, I received them on Monday. Most other manufacturers will tell you weeks, they had them to me in 2 shipping days. Warranty: Seriously, a lifetime warranty? Yes please. Nothing more to say. I can't say enough about how great of a company this is. I've even spoken to the owner through email a few years back on some questions that I had. Support small American built businesses. P.S. Core 4x4, feel free to make me an ambassador and send me some swag :) .
RH
R and H H Oct 24, 2025
★ ★ ★ ★ ★ Google
Top notch company. Mechanic lost bolts that clamp upper control arms. Korby sent out spare bolts no charge. Best customer service I’ve come across in a long time. Only suspension brand I’ll ever use.
TH
Todd Hume Jan 22, 2026
★ ★ ★ ★ ★ Google
Their products are great but the service is even better!! Thanks Korby.
DS
Dana Smith Jul 26, 2025
★ ★ ★ ★ ★ Google
Excellent, strong, and durable products—perfect for both on-road and off-road applications. The customer service is outstanding—friendly, knowledgeable, and extremely helpful with understanding installation and ensuring I got exactly what I needed. I would definitely order again. Top-notch company with high-quality products made right here in the U.S.A.
BB
Brayden Brockey Mar 23, 2024
★ ★ ★ ★ ★ Google
Got a set of upper control arms for my xj, really impressed with the quality
MB
Melody Baker Jan 22, 2026
★ ★ ★ ★ ★ Google
I ordered a part for my 03 Jeep TJ and all I can say is wow! Korby at Core 4x4 is a total rockstar!! There was a glitch with my payment and within minutes, Korby reached out to me to get it fixed, then sent my receipt with the tracking number. I lost the number and reached out to him during the Holidays and got a rapid response with the number again. I can’t say enough about the customer service and the quality of parts. Thank you!!
TW
Travis Walker Sep 24, 2025
★ ★ ★ ★ ★ Google
I have nothing but great things to say about this company and their customer service. If you like American made products backed by warranty and amazing customer support, this is the company for you. I have a Lexus GX470 and love their rear control arms.
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

Specifications

Color Black, Blue, Charcoal, Green, LightGreen, Orange, Purple, Red, White, Yellow, Custom Color - Other than what is listed above. Extra charge varies. We will reach out after order is placed.
Hardware No Hardware, Complete Kit
Arm Bend No Bend, Inward Bend
Lift Size 0" — 6", 6"+
Vehicle Ram HD 3500 (03–07)
Brand CORE 4X4
Series Trail Series
Year Range 03-07
Note to Core4x4: -
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