Prothane GM 2/4wd Rear 1.5in OD Frame Shackle Bushings - Red

If you're working on the rear suspension of your GM truck and notice excessive play or a clunking noise when going over bumps, it might be time to replace those worn-out frame shackle bushings. These red polyurethane bushings from Prothane are designed to fit a wide range of GM 2WD and 4WD trucks from the late 80s through the late 90s and early 2000s, including popular models like the Chevrolet C1500 and GMC K2500.

These bushings are made from a durable polyurethane material that offers a good balance between stiffness for control and flexibility to absorb road vibrations. They have a 1.5-inch outer diameter, which is a common size for many GM rear suspension shackles. Replacing old, cracked rubber bushings with these polyurethane ones can help restore proper suspension geometry, reduce unwanted movement, and contribute to a more stable ride. Polyurethane is known for its resistance to wear and tear, making it a solid choice for suspension components that endure constant stress.

When you're ready to install, you'll typically need to remove the old bushings, which can sometimes be a bit stubborn. Having a press or a suitable bushing removal tool can make the job much easier. Once the old ones are out, these Prothane bushings should press in cleanly to refresh your rear suspension.