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What Do The Different Grades Mean?

When There’s No Option Available:

We’ve selected the material that offers the best balance of performance and comfort for your vehicle’s needs.

Comfort (Blue 65A):

Our Comfort grade bushes are designed to enhance ride quality and minimise road noise, making them ideal for everyday driving. They are softer, providing maximum suspension articulation and a cushioned feel that absorbs bumps and vibrations effectively. This softer composition ensures a smoother, quieter driving experience, especially in Classic cars or Land Rovers. Comfort bushes maintain a balance between originality and ease of driving, catering to those who value a relaxed Factory-Fresh drive.

Dynamic (Orange 75A):

The Dynamic grade bushes offer a middle ground between Comfort and Performance. They are slightly firmer than the Comfort bushes, which improves handling and cornering response without sacrificing too much ride comfort. These bushes are ideal for drivers who enjoy a more engaging driving experience while still needing a level of comfort for daily use, whilst also being suitable for spirited driving & light track use.

Performance (RED 85A):

Performance grade bushes are the stiffest of the three, designed for enthusiasts who demand the utmost in handling and control. They offer minimal deflection, enhancing vehicle response and stability during aggressive driving. These bushes are perfect for high-performance or track vehicles where precision and handling are critical. While they might sacrifice some ride comfort, they deliver superior driving dynamics and control, ideal for those who push their vehicle to its limits – Including Towing!

Machinable Material:

These rods are produced in 90 Shore A which allows them to be machined on a lathe.

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Home › Shop › Toyota › Celica ST165 GT4 (1986-1989)

Polybush Shop

Celica ST165 GT4 (1986-1989) Suspension Bushes

Toyota

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Celica ST165 GT4 (1986-1989) suspension bush diagram

Key Information

Photos

Fitting Videos

Specifications

The Celica ST165 was the car that took Toyota rallying seriously, and the four wheel drive GT4 launched in 1986 carried a rear end far more complex than the front wheel drive Celicas sold alongside it. Anyone searching for a Toyota Celica ST165 GT4 part usually arrives with the same complaint: a settled, slightly wayward back axle that tramlines under power and thumps over expansion joints.

Almost all of that comes from the rear. The ST165 hangs its differential and rear subframe on rubber mounts that sag under three decades of torque loading, and once the subframe can move, the geometry behind it never settles. Add worn track arm inner bushes, front and rear, plus tired trailing arm bushes at either end, and the rear wheels begin to steer themselves under load. Polybush covers each of those points: rear subframe, rear diff carrier, both rear track arm inners and the trailing arm bushes.

Polyurethane holds the setting you fit it at. It shrugs off gear oil, road salt and heat soak from the exhaust, so a 1986 Celica keeps the geometry you paid to have set. For the later cars see the ST185 GT4 and ST205 GT4, or browse the full Toyota range.

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