Dirt King 4130 Upper Control Arms Built to Solve Real Problems

If you drive a 2025+ 4Runner (2WD or 4WD) and ready for a suspension upgrade, these 4130 UCAs are for you. We made them to tackle the exact issues we kept running into ourselvessqueaky bushings, joints that need constant attention, and geometry thrown off as soon as you add a lift. Whether youre 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 03″ 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 4Runner With Confidence
Built and tested in the USA, these 4130 UCAs are engineered for the long haulperfect for rigs that work hard on weekdays and explore even harder on weekends. Its the last set of upper control arms youll ever need.

• Amount of Lift: Allows for 0-3 of lift
• Track Width: Stock
• Maximum Backspacing: 5.75
• Minimum Rim Size: 17

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

What’s Included

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