The UMI rear spring spacer kit offers a simple, stackable method to fine-tune rear ride height for GM A-, G- and F-Body cars to dial in stance or stop tire rub. Zinc-coated, laser-cut mild steel spacers include four 1/8" and two 3/16" pieces and can be safely stacked. OD 3-3/4" and ID 2-7/8" help verify fitment. Normal installation is on the upper perch; no cutting, welding or drilling required.
UMI Performance Spring Spacer Kit