GM 1 3/4in Frame Shackle Eye Set Black

The Energy Suspension GM 1 3/4-inch Frame Shackle Eye Set in black is a polyurethane and steel suspension bushing replacement designed for GM full-size trucks from 1973 to 1987. This rear spring shackle bushing kit replaces worn factory components with hyper-flex polyurethane construction that restores suspension geometry and eliminates the play that develops in aging mounting points. Shackle eye bushings are critical suspension components that allow the leaf spring to articulate while maintaining structural rigidity—this kit addresses the most common wear point in classic truck rear suspension systems.

The 1 3/4-inch frame shackle eye specification indicates the bore diameter of the bushing assembly, ensuring precise fitment to the factory mounting hole on the frame. Energy Suspension's hyper-flex polyurethane formula resists the degradation that standard rubber compounds experience over decades of heat cycling, UV exposure, and flexing under load. The cadmium-plated steel hardware preserves corrosion resistance, essential for longevity in road salt and moisture-prone environments. By replacing both sides of the rear shackle mount simultaneously, this kit restores symmetrical suspension compliance and reduces clunking noises that signal worn bushings.

This kit is engineered for owners restoring or maintaining first- and second-generation C-series full-size trucks—vehicles that rely heavily on leaf spring suspension. Off-road enthusiasts, classic truck collectors, and mechanics performing comprehensive suspension rebuilds commonly specify Energy Suspension shackle bushings as part of a complete bushing replacement program. Proper shackle mounting geometry is non-negotiable for correct wheel alignment and ride quality, making this a functional necessity rather than an optional upgrade.