Rear Spring Frame Shackle Kit

The Energy Suspension Rear Spring Frame Shackle Kit is designed for drivers seeking enhanced chassis control and reduced noise from their suspension systems. This kit is suitable for street vehicles, daily drivers, and light-duty trucks, addressing issues caused by worn or stock shackles that can lead to deflection, vibration, and clunking at frame attachment points.

By replacing rubber bushings with high-durometer polyurethane components, this kit maintains consistent spring geometry while significantly reducing NVH (noise, vibration, harshness) transmission into the cabin and chassis. The polyurethane formulation is resistant to cracking, UV degradation, and permanent set, ensuring long-term performance across various climates and driving conditions.

This shackle kit preserves factory ride height and spring rate while improving articulation and eliminating excessive frame movement. Installation is straightforward, as the shackles bolt directly to the frame and spring perch using existing hardware, making it a favored choice for mechanics and enthusiasts upgrading leaf-spring suspensions on trucks and older vehicles.