GM SHKL KT 1.5OD 2/4WD

The GM SHKL KT 1.5OD 2/4WD spring shackle kit from Prothane is engineered to restore suspension geometry and eliminate worn-out factory components that compromise ride quality and handling. This essential suspension upgrade targets General Motors trucks and SUVs equipped with leaf spring rear suspensions in both 2WD and 4WD configurations. Spring shackles are critical pivot points that connect the rear leaf springs to the frame, and factory steel units wear out over time, causing sagging, uneven tire wear, and reduced load-carrying capacity. By replacing degraded OEM shackles with this precision-engineered kit, you restore factory suspension geometry and improve overall vehicle stability.

Prothane's 1.5-inch outer diameter design maintains OEM proportions while using polyurethane and steel construction for enhanced durability and reduced deflection compared to worn factory hardware. The kit accommodates both 2WD and 4WD applications, making it a versatile solution across GM's truck lineup. At just 0.8 pounds, this compact assembly (4.2 x 3.1 x 4.8 inches) installs cleanly without requiring major suspension modifications. The polyurethane bushings resist deterioration from UV exposure and road salt that typically degrades rubber components, extending service life significantly. Installation is straightforward—the shackle bolts directly to existing frame and spring attachment points using standard fasteners.

This spring shackle kit is ideal for mechanics and truck owners maintaining or restoring vintage and modern GM trucks, especially those experiencing rear-end sag or preparing vehicles for towing and hauling. Whether you're refreshing a daily-driver pickup or upgrading a project truck for improved load rating, this component delivers measurable improvements in suspension compliance and frame alignment. Professional installation is recommended to ensure proper torque specifications and alignment. The kit's compatibility with both 2WD and 4WD platforms makes it a smart inventory item for shops and a reliable choice for DIY restoration work on General Motors vehicles.