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

Sale price$999.00

Shipping calculated at checkout

May have applicable lead time / Ships from Manufacturer


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 stock arms. We solved these problems by designing our upper control arms with increased castor and repositioned pivot angles reducing stress on the joints. The increased castor allows for proper alignment and improved handling. We also replaced the weak factory ball joints with 1” stainless steel uniballs for maximum strength and increased articulation. For the inner pivots we used heavy duty ¾” FK heims for additional camber and caster adjustability. To mount the arms to the spindle we include high grade 17-4 stainless steel misalignment spacers and military grade F911 hardware. 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”.
  • Coil over Shock Size: Factory or OEM replacement coilovers.

Wheel travel/lift.
The upper control arms must be paired with OEM replacement coil overs to lift the vehicle. They offer an additional 1” of down travel compared to the stock upper control arms. These arms are compatible with King, Fox, Bilstein, ADS and Icon coil overs. Do not install these upper control arms with coil spacers that over articulate the suspension.

*Some King OEM replacement coil overs have short reservoir hoses that come in contact with aftermarket upper control arms. This can be solved by installing longer reservoir hoses or adjusting the reservoir to allow for more slack in the hose.

Tire info:
The upper control arms will allow for 33” tires but the front section of the cab mount may need to be cut to avoid tire rubbing while turning. In addition the front bumper may require trimming for proper tire clearance.

What's included:

  • Boxed plate upper control arms.
  • ¾” FK heim joints.
  • 1” FK uniballs.
  • 17-4 stainless steel misalignment spacers.
  • Military grade F911 hardware.
  • Durable black powder coat.
  • Dirt King sticker pack.
  • Installation instructions.


  • CAD designed.
  • Boxed plate construction.
  • Utilizes American made FK bearings.
  • 4130 chromoly uniball cups.
  • Brushed stainless steel logo plates.
  • Preassembled for fast installation.
  • 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 GX460 4WD.

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