Energy Suspension rear spring-frame shackle bushings for 1974–1979 Ford trucks are molded from Hyper-Flex performance polyurethane to replace conventional rubber components. The material is claimed to last five to ten times longer than rubber, improving suspension control during cornering, launches and braking while maintaining durability. These black bushings are intended to restore proper function and longevity to leaf spring shackles.
Energy Suspension 74-79 Ford Various Trucks Rear Spring-Frame Shackle Bushings Only - Black