Prothane 73-87 GM Rear Spring & Shackle Bushings (w/ 1.75in Bushings) - Red

Prothane is known for making durable polyurethane suspension components, and this rear spring and shackle bushing kit is a solid example. If you're working on a classic GM truck from 1973 to 1987, like a Chevrolet C20 or GMC C3500, and the rear suspension feels a bit loose or worn out, replacing these bushings is a smart move. They are critical for allowing your rear springs to articulate properly while keeping the suspension securely mounted to the frame.

This kit includes bushings designed to replace the stock rubber ones, which can degrade and crack over time. Polyurethane is a tougher material than rubber, meaning these bushings should last longer and offer a more consistent feel. The 1.75-inch diameter is specific to certain GM rear suspension setups from this era, ensuring a proper fit when you're ready to install them. Replacing worn bushings can make a notable difference in how your truck handles, reducing unwanted flex and noise from the rear end.