Dirt King 4130 Upper Control Arms | GMC Sierra 1500 (2007-2018)

The Dirt King 4130 Upper Control Arms are precision-engineered suspension upgrades built to solve the common problems that arise when lifting a truck — including worn bushings, geometry issues, and excessive maintenance. Constructed from precision-welded 4130 chromoly tubing, these arms are strong enough for off-road abuse while delivering improved handling and control compared to stock components.

These arms feature maintenance-free SilentSpin™ bushings that eliminate the need for grease fittings and unwanted noise, coupled with heavy-duty Probearing Pro 4 ball joints sealed to keep debris out and improve articulation. Designed to maintain proper alignment from 0–3″ of lift and provide roughly an inch of additional down travel versus stock, they’re ideal for lifted vehicles equipped with quality coilovers.

Specifications

• Amount of Lift: Allows for 0–3” of lift
• Track Width: Stock
• Maximum Backspacing: 4.75”
• Minimum Rim Size: 17”

What's Included

• 4130 Chromoly upper control arms
• Probearing SilentSpin Hybrid bushings
• Probearing Pro 4 Superior Performance 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

GMC Sierra 1500 2WD / 4WD 2007–2018

Not compatible with 2019+ GM 1500 models

This product is designed to work with OEM-style and Dirt King suspension setups. Compatibility with other brands (shocks, coilovers, brackets) must be confirmed with the manufacturer before installation.

Installation

These upper control arms install as a direct replacement for stock upper arms on compatible applications. Remove the factory arms, install the Dirt King arms using supplied or recommended hardware, and tighten to manufacturer torque specifications. Because they ship preassembled, installation time is reduced. After installation, a professional alignment is recommended to ensure proper suspension geometry and steering characteristics before regular driving or off-road use.