What is the main benefit of replacing the differential mount bushings?

Replacing worn differential mount bushings helps to reduce unwanted movement of the rear differential. This results in a more direct and responsive feel when accelerating or decelerating, and can also reduce noise and vibration.

Will these bushings make my ride harsher?

No, Superpro designed these bushings to maintain OEM levels of noise, vibration, and harshness isolation. The goal is to improve performance and durability without sacrificing cabin comfort.

How long do these bushings typically last compared to stock?

The materials used by Superpro are designed for improved service life. Unlike natural rubber which softens and degrades, these bushings maintain their performance throughout their lifespan.

1965-1976 Triumph TR4A/TR6 Differential Bushings | Superpro

Name: SuperPro 65-68 Triumph TR4A Differential Mount- (Rear)
Brand: Superpro
Price: 94.99 USD
Availability: InStock

SuperPro 65-68 Triumph TR4A Differential Mount- (Rear)

$94.99

On Backorder

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

Fits 1965-1976 Triumph TR4A/TR6. Replaces worn differential mount bushings for improved responsiveness and reduced noise.

Key Features

Fits 1965-1968 Triumph TR4A and 1968-1976 Triumph TR6.
Replaces the forward differential mount (pinion mount) bushings.
Helps reduce differential movement under load for improved responsiveness.
Designed to maintain original levels of noise, vibration, and harshness isolation.
Made from durable materials for a longer service life compared to stock rubber.

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Fits these vehicles

Triumph TR4A 1965-1968
Triumph TR6 1968-1976

Product Details

If you're working on the rear end of your 1965-1976 Triumph TR4A or TR6, you'll want to pay attention to the differential mount bushings. The original rubber bushings in the forward differential mount, often called pinion mount bushings, tend to break down over time, especially with harder use. When these wear out, they allow too much movement in the rear differential, which can make your car feel sluggish and imprecise when you get on the gas or let off. You might also notice extra noise or vibration as the bushings get really worn.

Superpro's kit replaces those soft rubber bushings with their own material, designed to keep the differential located more accurately. This means you'll feel a more direct connection to the road and improved responsiveness from your drivetrain. Importantly, these bushings are made to maintain the original levels of comfort inside the cabin, so you won't be trading a better-feeling rear end for a harsher ride. Plus, the material Superpro uses is built to last, offering a much longer service life than stock rubber.