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 use durable urethane bushings with grease fittings for easy servicing. 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.
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.
- Boxed plate upper control arms
- Urethane bushings
- Grease fittings
- 1” FK uniballs
- 17-4 stainless steel misalignment spacers
- Military grade F911 hardware
- Zinc plated bushing washers
- Zinc plated inner bushing sleeves
- Durable black powder coat
- Dirt King sticker pack
- Installation instructions
- CAD designed
- Boxed plate construction
- 4130 chromoly uniball cups
- Brushed stainless steel logo plates
- 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-Current Toyota 4Runner 2WD / 4WD
2007-2014 Toyota FJ Cruiser 2WD / 4WD
All products sold or manufactured by Dirt King Fabrication are intended for off-road use only. Our suspension systems are not to be modified from its original design in any way. Dirt King Fabrication is not responsible or liable for any accidents, injuries or deaths that may occur from use of any products offered. Installation of this system will alter the center of gravity of the vehicle and may increase the risk of a roll over as compared to stock. Customer assumes all liability in assuring that parts are correctly installed and maintained.