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This Powerflex Rear Sub Frame Mounting Kit (PFR63-120) is designed for vehicle owners experiencing issues like imprecise handling, uneven tyre wear, and braking instability due to soft or failing suspension bushes. It offers improved performance, increased safety, and prolonged tyre life by replacing worn rubber components with durable polyurethane. A potential caveat is that the increased stiffness may transmit more road noise and vibration into the cabin for some users.
| Model Part Number | PFR63-120 |
|---|---|
| Brand | Powerflex |
Suspension bushes are rubber or polyurethane components that isolate suspension parts, absorb vibration, and allow for controlled movement. They fail over time due to age, stress, and exposure to elements, leading to imprecise handling and wear.
Powerflex polyurethane bushes are significantly more durable than standard rubber bushes and are designed to last the lifetime of the vehicle under normal operating conditions.
While polyurethane offers a firmer ride than stock rubber, the primary goal is to restore lost performance and handling. The level of harshness perceived can vary depending on the specific application and driver sensitivity. Some vibration may be transmitted, which is a trade-off for improved control.
Not necessarily. The Powerflex bushes are designed to *prevent* uneven tyre wear by correcting suspension geometry issues caused by worn original bushes. If you already have uneven wear, you may need new tyres, but the bushes will help prevent it going forward.
Installation requires mechanical knowledge and typically some specialized tools for pressing out old bushes and pressing in new ones. If you are not experienced with suspension work, it is recommended to have them installed by a professional mechanic.
Rubber is softer and provides better vibration isolation but degrades over time and allows for more suspension flex. Polyurethane is much stiffer, more durable, and offers less flex, resulting in improved performance and handling at the cost of some comfort.
Ensure the bushes are fully seated and the mounting hardware is torqued to the manufacturer's specifications. Check for any foreign debris trapped during installation.
While Powerflex bushes help, check wheel alignment as this is a separate but crucial factor for tyre wear. Ensure no other suspension components are worn or damaged.
This can be a characteristic of stiffer suspension components. Ensure the correct parts were installed and torqued correctly. Consider if the vehicle is being used for intended purpose where this is acceptable.
Setup: Installation involves removing the original rubber sub frame mounting bushes and pressing in the new Powerflex polyurethane units. It is recommended to consult a workshop manual for the specific vehicle model for detailed removal and installation procedures. Ensure surfaces are clean before fitting.
Compatibility: This kit (PFR63-120) is designed for specific vehicle models. Always verify compatibility with your vehicle's make, model, and year before purchase using the manufacturer's application guide.
Care: Polyurethane is a low-maintenance material. Periodically inspect the bushes for any signs of damage or excessive wear. Clean with mild soap and water. Avoid using petroleum-based solvents or degreasers, as these can degrade the material. Ensure the metal mounting hardware is kept clean and free from corrosion. A silicone-based lubricant may be used on the polyurethane contact surfaces during installation to prevent noise.
