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Dirt King 4130 Upper Control Arms – Built to Solve Real Problems

If you drive a 2004–2020 Ford F-150 and you're ready for a suspension upgrade, these 4130 UCAs are for you. We made them to tackle the exact issues we kept running into ourselves—squeaky bushings, joints that need constant attention, and geometry thrown off as soon as you add a lift. Whether you’re daily driving, overlanding, rock crawling, or chasing desert trails, these UCAs handle it all.

These arms feature maintenance-free SilentSpin™ bushings that eliminate grease fittings and unwanted noise, along with heavy-duty Probearing Pro 4 ball joints for high articulation and superior strength. The ball joints are sealed to block out debris and finished with anodized caps. Built to maintain proper alignment from 0–3" of lift, these arms also add roughly an inch of down travel compared to stock—a must-have when paired with our shocks or other aftermarket coilovers like King, Fox, Icon, and more.

Why Go Dirt King?

  • SilentSpin™ bushings — no squeaks or maintenance
  • Pro 4 ball joints with sealed dust caps
  • Rebuildable, USA-made construction
  • Precision-welded 4130 chromoly tubing
  • Shipped preassembled for faster installs

Upgrade Your F-150 With Confidence

Built and tested in the USA, these 4130 UCAs are engineered for the long haul—perfect for rigs that work hard on weekdays and explore even harder on weekends. It’s the last set of upper control arms you’ll ever need.

  • CAD Designed – Engineered for optimal performance and durability
  • SilentSpin Bushings – Maintenance-free and engineered for quiet, smooth articulation
  • Pro 4 Series Ball Joints – High-strength, sealed design for maximum reliability
  • 4130 Chromoly Construction – Built with precision-welded tubing and reinforced gussets
  • Formed Steel Bushing Gussets – Adds strength and rigidity under heavy load
  • Preassembled – Delivered ready to install for faster setup
  • Zinc-Plated Hardware – Corrosion-resistant for long-term protection
  • Durable Black Powder Coat – Resistant to harsh environments
  • Professionally MIG Welded – Ensures structural integrity for extreme off-road conditions
  • Made in the USA – Designed, built, and tested locally for trusted performance
  • Amount of Lift: Allows for 0–3” of lift
  • Track Width: Stock
  • Maximum Backspacing: 4.75”
  • Minimum Rim Size: 17”
  • Weight: 21 lbs
  • Dimensions: 18.25 × 15 × 8

Note: Do not install with coil spacers combined with extended-length aftermarket shocks.

  • 4130 Chromoly upper control arms
  • Probearing SilentSpin bushings
  • Heavy-duty Probearing ball joints
  • Ball joint caps
  • Dirt King sticker pack

SHIPPING & DELIVERY

Dirt King ships their products within the United States and Internationally. Most products ship via UPS or USPS. Orders that exceed $500 require a signature confirmation. On bulk orders contact Dirt King for a freight quote. The customer is responsible for import taxes and fees on international shipments.

Damaged or Missing Parts

In an instance where you receive a damaged package a claim must be made with Dirt King. The claim can be submitted by sending an email to sales@dirtkingfabrication.com containing photos of the damaged packages and damaged products. The email must also include your order number as well. Do not discard any of the original packaging or try installing the products.
While every precaution is taken there could be a case where you are missing parts. If this happens please send an email to sales@dirtkingfabrication.com with your order number, list of missing parts, photo of the package or packages, and a photo of the quality control tag located on the back of the box.
If the shipping carrier losses your package please contact Dirt King. A claim will be filled with the shipping carrier. Unfortunately, we do not have much control over this situation and must wait for the carrier to process the claim.

Freight Shipping

The customer must contact Dirt King to arrange for freight shipping. Dirt King will palletize the order and the customer can deal directly with the freight carrier if preferred. The shipment can be delivered to a home or business. The customer must be present for the delivery to inspect and sign for the package. Before signing confirm that you received all items listed on the packing slip

RETURNS & EXCHANGE

  • Returns are only accepted within 30 days.
  • Product must have been purchased from us and not a dealer.
  • A 3% processing fee is deducted from all refunds.
  • On shipped orders a 7% restocking fee and a 3% processing fee is deducted from all refunds.
  • We are not responsible for return shipping or refunding the original shipping amount on shipped orders.
  • Products with optional powder coat, such as bumpers, hitches, and bed cages, are subject to a 7% restocking fee and a 3% processing fee. If the order is canceled before the product is powder-coated, then the 7% restocking fee can be waived
  • Parts must be returned in the original packaging and condition.
  • No returns on damaged or installed components.
  • Refunds will be issued within two business days after the parts have been received and inspected.
  • Custom and clearance products are non-refundable.
  • Crypto orders will be refunded the same coin amount that was paid originally.

DIRT KING WARRANTY

Dirt King Fabrication warrants its products against defects in materials and workmanship for the original purchaser. This warranty applies to Dirt King products under normal use and service and is valid for the original purchaser only.

WARRANTY COVERAGE

If a Dirt King product is found to have a manufacturing defect, Dirt King will, at its discretion, repair or replace the defective product. Warranty coverage does not include damage caused by improper installation, misuse, abuse, accidents, modifications, racing, or normal wear and tear.
All warranty claims must be submitted to Dirt King for review. Please contact sales@dirtkingfabrication.com and include your order number, a description of the issue, and clear photos of the product and any damage or defect.

WARRANTY EXCLUSIONS

This warranty does not cover products that have been improperly installed, altered, modified, or damaged through misuse or an accident. Dirt King is not responsible for damage resulting from improper installation or use of products outside their intended application.
Normal wear and tear, cosmetic damage, and damage caused by improper maintenance are also not covered under warranty.

WARRANTY CLAIMS

To submit a warranty claim, please contact sales@dirtkingfabrication.com with your order number, photos of the product, and a detailed description of the issue. Do not discard or modify the product before your claim has been reviewed.
Dirt King will review each claim and determine the appropriate resolution. Proof of purchase may be required for all warranty claims.