Silentspin hybrid bushings: Eliminates squeaks and maintenance for quieter, longer-lasting performance
Pro 4 series sealed ball joints: Provides high articulation and superior strength while blocking debris
4130 chromoly construction: Ensures extreme durability and resistance to wear, corrosion, and fatigue
Precision welded tubing: Delivers structural integrity for demanding off-road and overlanding use
Preassembled kit: Enables quick, hassle-free installation with no guesswork
Summarized by Shop
Description Dirt King 4130 Upper Control Arms – Built to Solve Real Problems
If you drive a 2003–2024 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 ourselves—squeaky bushings, joints that need constant attention, and geometry thrown o
Material
4130 chromoly steel
Lift Capacity
Up to 0.3 inch
Track Width
Stock
Maximum Backspacing
4.75 inch
Minimum Rim Size
17 inch
Articulation
76-38 degrees (model dependent)
Includes
4 upper control arms, Pro 4 ball joints, Silentspin bushings, hardware, sticker pack
Summarized by Shop
5.0
7 ratings
5
4
3
2
1
Very well made and easy to install. Steering feels better too.
J
Jaeron · June 29, 2026
Good
L
Levi · July 13, 2026
Fit and finish are the finest in the industry our favorite arms to install!