SuperPro 2004 Pontiac GTO Base Rear 8mm Lower Spring Isolator - SPF1358-8K

SuperPro's coil spring insulators and spacers offer supreme durability and consistent performance. Without the degradation over time that plagues rubber insulators SuperPro’s bespoke polyurethane compounds offer proper spring location and retention for the life of your vehicle. No sag, no softening, just predictable and permanent suspension solutions.