UMI’s rear spring spacers may be just the ticket to achieve that perfect stance or prevent tire rub. UMI’s zinc coated, laser cut mild steel spacers are available in 1/8” and 3/16” thickness and can be safely stacked. They provide an easy way to fine tune the rear ride height of your GM A, G and F-body. No cutting, welding or drilling required. We recommend these for fine-tuning only, and maximum adjustment amount is the responsibility of the installer. Normal installation position is on the upper perch, but can be used on the lower. Kit includes four 1/8” and two 3/16” spacers.