Dirt King Fabrication - Upper Arm Spacer Kit - Toyota 4Runner (2003-2023), FJ Cruiser (2007-2014), Tundra (2007-2021), Lexus GX470/GX460 (2003-2023)The upper arm spacer kit is ideal for people looking to build their own uniball upper control arms or need to replace their worn out hardware. The spacer kit adapts a 1" uniball to the factory spindle. The spacers are machined from 17 4 stainless steel and have a precision fit taper to mate to the spindle. This product will not work with aftermarket spindles and may not work with other manufacturers uniball upper control arms. Includes: (2) 9 16 half