Prothane 81-87 GM K30 Rear Spring & Shackle Bushings (w/ 1.5in OD Frame Shackle Bush) - Black

These rear spring and shackle bushings from Prothane are made from a durable black polyurethane. They are designed to replace the worn-out rubber bushings in the rear suspension of your 1981-1987 GM K30 truck. Polyurethane is a popular choice for suspension components because it offers a good balance of stiffness and durability, helping to improve handling and reduce unwanted flex in the suspension system.

This particular kit includes bushings specifically for the rear springs and shackles, and it's important to note that it's designed for frames with a 1.5-inch outer diameter shackle bushing. Replacing old, cracked rubber bushings with new polyurethane ones can make a noticeable difference in how your truck handles, especially when carrying loads or cornering. They help keep your suspension geometry consistent, which can lead to a more stable and predictable ride.