Dirt King Fabrication - Ball Joint Upper Control Arms - 4Runner (2003-2023), FJ Cruiser (2007-2014), Lexus GX470/GX460 (2003-2023)

Sale price$599.00 USD

There are multiple issues when lifting your vehicle with stock upper control arms. Both the geometry and strength are compromised due to over articulating the factory arms. We solved these problems by designing our arms with increased castor and repositioning the pivot angles reducing stress on the joints. The increased castor allows for proper alignment and improved handling. We have also upgraded the factory ball joints with heavy-duty Moog ball joints. For the inner pivots, we used durable urethane bushings with grease fittings for easy servicing. All of the components on our upper control arms are rebuild-able or replaceable to make this product last a lifetime. The arms come preassembled and include detailed instructions for easy installation.


  • Wheel Travel: Additional 1” of travel compared to stock.
  • Amount of Lift: Allows for 0-3” of lift.
  • Track Width: Stock.
  • Maximum Backspacing: 4.75”.
  • Minimum Rim Size: 16”.
  • Coilover Shock Size: Factory or OEM replacement coilovers.

What's included:

  • Chromoly upper control arms.
  • Urethane bushings.
  • Grease fittings.
  • Moog ball joints.
  • Upgraded dust boots.
  • Zinc plated bushing washers.
  • Zinc-plated inner bushing sleeves.
  • Durable black powder coat.
  • Dirt King sticker pack.
  • Installation instructions.


  • CAD designed.
  • Formed steel bushing gussets.
  • Constructed with 4130 chromoly tubing.
  • Preassembled for fast installation.
  • Grease fitting ports for easy servicing.
  • Zinc plated components for corrosion resistance.
  • Professionally MIG welded.
  • Proudly made in the USA.


  • 2003-2023 Toyota 4Runner 2WD / 4WD.
  • 2007-2014 Toyota FJ Cruiser 2WD / 4WD.
  • 2003-2009 Lexus GX470 4WD.
  • 2010-2023 Lexus GX460 4WD.