Dirt King 4130 Upper Control Arms | 2003-2024 4Runner / FJ Cruiser / GX460 / GX470

Dirt King 4130 Upper Control Arms maintain alignment, support 0-3" lift, and add down travel for 2003-2024 4Runner. SilentSpin bushings and Pro 4 ball joints deliver strength, durability, and improved suspension performance.

Dirt King 4130 Upper Control Arms – Built to Solve Real Problems
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 4Runner 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.

Features

• Pro 4 Series Ball Joints – Forged SAE4140 housing, 76° 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

What's Included

• 4130 Chromoly upper control arms
• Probearing SilentSpin bushings
• Heavy-duty Probearing Ball Joints
• Ball joint caps
• Upper control arm bolts
• Dirt King sticker pack

Specifications

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

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

Compatibility

Years by model: 4Runner 2003-2024; FJ Cruiser 2007-2014; GX460 2010-2023; GX470 2003-2009

Fitment Notes

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