Dirt King 4130 Upper Control Arms | Ram 1500 (2009-2018)

The Dirt King 4130 Upper Control Arms are engineered to address the common issues seen with lifted and performance suspension setups — such as squeaky bushings, frequent maintenance, and compromised geometry. Built with precision-welded 4130 chromoly tubing, these control arms provide strength and durability whether you’re daily driving, overlanding, rock crawling, or tackling desert trails. They help maintain proper alignment with up to 3″ of lift while also adding roughly an inch of extra down travel compared to stock arms — improving articulation and handling with aftermarket shocks or coilovers.

Maintenance-free SilentSpin™ bushings eliminate the need for grease fittings and reduce noise, while heavy-duty Probearing Pro 4 ball joints sealed against debris enhance articulation and longevity. Arriving preassembled, these arms make installation easier and provide a rugged replacement that’s built to last.

Specifications

• Amount of Lift: Allows for 0-2.5” of lift
• Track Width: Stock
• Maximum Backspacing: 4.75”
• Minimum Rim Size: 17”

What's Included

• 4130 Chromoly upper control arms
• Probearing SilentSpin bushings
• Probearing Pro 4 Series Ball Joints
• Ball joint caps
• Dirt King sticker pack

Features

• Pro 4 Series Ball Joints – Forged SAE4140 housing, 38° of articulation, and induction-hardened ball stud for maximum strength and smoother steering feel
• SilentSpin Hybrid Bushings – Maintenance-free, greaseless, and engineered for quiet, free-spinning articulation
• Geometry Corrected – Improved caster and pivot angles deliver better handling and control with up to 3” of lift
• 4130 Chromoly Construction – Built with high-strength tubing and reinforced gussets for extreme durability
• Fully Rebuildable Design – All wear items are replaceable for long-term reliability
• Corrosion-Resistant Finishes – Zinc-plated hardware and black powder coat protect against the elements
• Professionally MIG Welded – Ensures structural integrity for demanding off-road use
• Preassembled – Quick, hassle-free installation with no guesswork
• Made in the USA – Built with pride and quality you can trust

Compatibility

RAM 1500 4WD 2009-2018

Does not work on TRX or RHO models

This product is designed to pair with OEM and Dirt King parts. Compatibility with other brands must be approved by the respective manufacturer.

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

Installation

Installation involves replacing the factory upper control arms with the Dirt King units using standard bolts and torque specifications. Because they are shipped preassembled, installation is more straightforward than kits requiring separate assembly. After installation, a professional alignment is recommended to ensure proper steering geometry and suspension performance before on-road or off-road use.