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

Polyurethane bushings are more resistant to degradation from road grime, UV exposure, and temperature changes compared to stock rubber. This means they tend to last longer and maintain their firmness for a more consistent suspension feel over time.

Does this kit include everything needed for the rear leaf spring and shackle installation?

This kit provides the polyurethane bushings for both the rear leaf springs and the shackle hardware. You will need to reuse your existing metal sleeves and hardware, and ensure they are in good condition.

What size are the shackle bushings in this kit?

The shackle bushings in this Prothane kit have a 9/16 inch inner diameter, which is a common size for many classic Ford applications.

1964-1966 Ford Mustang Rear Spring Bushings

Name: Prothane 64-65 Ford Mustang Rear Spring & 9/16in Shackle Bushings - Black
Brand: Prothane
SKU: prothane-prothane-64-65-ford-mustang-rear-spring-9-16in-shackle-bushings-black-t14-99540
Price: 49.41 USD
Availability: BackOrder

Prothane 64-65 Ford Mustang Rear Spring & 9/16in Shackle Bushings - Black

$49.41

On Backorder

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

Fits 1964-1966 Ford Mustang. Prothane rear spring and 9/16in shackle bushings in black help restore suspension feel.

Key Features

Fits 1964-1966 Ford Mustang.
Includes rear spring and 9/16 inch shackle bushings.
Made from durable black polyurethane.
Helps restore suspension feel and reduce unwanted flex.

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Product Details

Prothane is known for making durable polyurethane suspension components. For your classic 1964-1966 Ford Mustang, this kit replaces the worn-out rubber bushings in your rear leaf springs and shackle links with new polyurethane ones. These are designed to fit the original suspension setup, helping to bring back a more solid and responsive feel to your ride.

Polyurethane is a popular choice for suspension bushings because it offers a good balance between firmness and flexibility. Unlike stock rubber, which can degrade and crack over time, these Prothane bushings are built to last. They help reduce unwanted movement and flex in the rear suspension, which can make a noticeable difference in how the car handles, especially during cornering or over bumps. This particular set includes the necessary bushings for both the rear leaf springs and the shackle hardware, with a 9/16 inch inner diameter for the shackle bushings.

When you're replacing these bushings, it's a good time to inspect your leaf springs and shackle hardware for any signs of damage or excessive wear. Having a clean workspace and some basic hand tools will make the installation smoother. This kit comes in black to maintain a clean, classic look under your Mustang.