What is the main benefit of using polyurethane bushings over rubber?

Polyurethane bushings are generally more resistant to wear and tear from road conditions, temperature fluctuations, and contaminants compared to stock rubber bushings. This can lead to a longer service life and a more consistent suspension feel over time.

What does the '1.5in OD Frame Shackle Bush' note mean?

This indicates that the bushings specifically designed for the frame-mounted shackle portion of your rear suspension have an outer diameter of 1.5 inches. It's important to confirm this measurement matches your vehicle's original parts.

Do these bushings come with new hardware?

This kit includes the polyurethane bushings only. You will need to reuse your original hardware or source new bolts, nuts, and washers separately for installation.

Prothane Rear Spring & Shackle Bushing Kit 7-1054

Name: Prothane GM Rear Spring & Shackle Bushings (w/ 1.5in OD Frame Shackle Bush) - Red
Brand: Prothane
SKU: prothane-prothane-gm-rear-spring-shackle-bushings-w-1-5in-od-frame-shackle-bush--t14-100054
Price: 59.07 USD
Availability: BackOrder

Prothane GM Rear Spring & Shackle Bushings (w/ 1.5in OD Frame Shackle Bush) - Red

$59.07

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Prothane GM Rear Spring & Shackle Bushings (w/ 1.5in OD Frame Shackle Bush) - Red. Replaces worn bushings for improved rear suspension feel.

Key Features

Fits many 1988-2000 GM C/K series trucks.
Includes bushings for rear leaf springs and shackles.
Features a 1.5-inch outer diameter for frame shackle bushings.
Made from durable red polyurethane for improved longevity.
Helps restore suspension feel and reduce rear-end noise.

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Will this fit your vehicle?

Product Details

If you're working on the rear suspension of your GM truck, these Prothane rear spring and shackle bushings are a solid option for replacing worn-out rubber components. This kit is designed to fit a range of popular GM C/K series trucks from the late 80s through the late 90s, including models like the Chevrolet C1500, GMC K2500, and Chevrolet C3500. Worn bushings can lead to a sloppy ride, clunking noises, and uneven tire wear, so refreshing them can make a notable difference in how your truck handles.

This particular kit features bushings with a 1.5-inch outer diameter for the frame shackle, which is a common size for these applications. Prothane uses a durable polyurethane material that offers a good balance between road comfort and suspension responsiveness. Unlike stock rubber, this material is more resistant to degradation from road contaminants and temperature changes, helping them last longer. Replacing these bushings is a common part of a rear suspension overhaul or when addressing rear-end noise.