What is the main benefit of upgrading to polyurethane differential bushings?

Polyurethane bushings are stiffer than stock rubber, which helps to reduce unwanted movement and slop in the differential. This results in a more direct and responsive feel when accelerating, decelerating, or cornering.

Are these bushings difficult to install?

Installation involves removing the factory differential bushings and pressing in the new Prothane units. While it requires some mechanical skill and potentially a press, it's a common upgrade for Miata owners working on their rear suspension.

What color are these bushings?

These specific bushings are black, as indicated by the '-BL' in the part number.

1990-1997 Mazda Miata Rear Diff Bushings

Name: Prothane 90-97 Mazda Miata Rear Diff Bushings - Black
Brand: Prothane
SKU: prothane-prothane-90-97-mazda-miata-rear-diff-bushings-black-t14-98128
Price: 64.33 USD
Availability: BackOrder

Prothane 90-97 Mazda Miata Rear Diff Bushings - Black

$64.33

On Backorder

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

Fits 1990-1997 Mazda Miata. Prothane rear differential bushings improve handling by reducing slop in the drivetrain.

Key Features

Fits 1990-1997 Mazda Miata.
Made from durable black polyurethane material.
Helps reduce drivetrain slop for improved handling response.
Designed as a direct replacement for factory rear differential bushings.

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Product Details

If you're working on the rear end of your 1990-1997 Mazda Miata, these Prothane rear differential bushings are a solid choice for replacing worn-out stock rubber. Over time, the original bushings can degrade, leading to extra movement in the differential and a less connected feel when you accelerate or corner. Prothane's polyurethane material is known for its durability and ability to maintain its shape under stress, which helps to firm up the rear end of your Miata.

These bushings are made from Prothane's signature black polyurethane, a material that offers a good balance between stiffness for improved handling and some compliance to avoid a harsh ride. Replacing the stock rubber with polyurethane helps to minimize drivetrain slop, giving you a more precise feel when putting power down or making quick changes in direction. They are designed to fit right into the factory locations, making the installation process straightforward for someone comfortable working on suspension components.