Dirt King Lower Arm Spacer Kit | GMC Sierra 1500 (2007-2018)

The Dirt King GM 1500 Lower Arm Spacer Kit is engineered to adapt 1″ Probearing uniballs (P9AU16T) to the factory spindles, providing a precise and strong interface for upgraded suspension applications. These spacers are CNC machined from 17-4 stainless steel and are tapered for an exact fit on the factory spindle, ensuring long-lasting, corrosion-resistant performance. Designed specifically to work with Dirt King suspension systems, this spacer kit helps maintain proper alignment and articulation when upgrading to uniball upper control arms.

All necessary hardware is included, and the spacers are built to match the factory spindle’s geometry for reliable fitment. Note that this product will not work with aftermarket spindles and should be used as intended with compatible control arms and suspension systems.

Specifications

• Material: CNC-machined 17-4 stainless steel.
• Purpose: Adapts 1-inch Probearing uniballs (P9AU16T) to factory spindles.
• Design: Precision-tapered for proper factory spindle interface.
• Includes: (2) 5/8-inch half moon misalignment spacers.
• Includes: (2) 5/8-inch tapered misalignment spacers.
• Includes: (2) custom machined Grade 8 bolts with hardware.
• Compatibility: Factory spindles only. Not compatible with aftermarket spindles.
• Intended Use: Designed for Dirt King suspension systems. Use in other applications at user’s discretion.

Compatibility

GMC Sierra 1500 2WD/4WD 2007-2018

Installation

To install the Lower Arm Spacer Kit, remove the existing hardware from your upper control arm spindle interface and prepare the spindle for spacer placement. Slide the tapered spacers onto the spindle in the correct orientation, using the half moon and tapered spacers as needed to align the uniball correctly. Secure the spacers with the supplied Grade-8 bolts and torque to specification. Double-check alignment and articulation after assembly to confirm smooth, interference-free movement./p>