Austin Healey BJ8 Radius Arm Polybush Kit – Performance

What is this radius arm polybush kit?

This performance-grade polyurethane bush kit is designed for the rear radius arms fitted to later Austin Healey BJ8 models. It provides a polyurethane alternative to the standard OE-style radius arm bush assemblies, using a firmer compound to deliver more controlled rear axle location.

The performance specification is intended for cars driven enthusiastically on the road.

Key benefits

• Reduced compliance compared with OE-style bush assemblies
• More consistent rear axle control under load
• Resistant to oil, fuel, and road contamination
• Maintains shape under repeated suspension movement
• Suited to fast road driving

Will this fit my Austin Healey?

Yes, if your car is a later BJ8 fitted with rear radius arms.

Fits:

• Late BJ8 (from chassis BJ8.26705 onward)

Does not fit:

• Earlier BJ8 models without radius arms
• BN1 to BT7 models

What’s included in the kit?

• Performance-grade polyurethane bushes for both rear radius arms
• Correct quantity to service one complete radius arm set

Technical details

• Material: Polyurethane (performance compound)
• Colour: Red
• Application: Rear suspension radius arms
• Resistance: Oil, fuel, and general road contamination
• Compliance level: Reduced compared with touring and OE-style bush assemblies

Installation & setup notes

Installation requires removal of the radius arms and pressing out the existing bush assemblies.

• Press or suitable bush tool required
• Inspect radius arm pins and mounts for wear
• Final tightening should be carried out at normal ride height

Increased firmness compared with the touring specification may be noticeable.

Why choose the performance specification?

The performance specification is intended for owners who want a polyurethane alternative to the standard OE-style radius arm bush assemblies, with reduced compliance for more controlled rear axle location.

FAQs