Polybushing anything is a total waste of time.
The vast majority of Poly Bushes offered are made of inferior material & will wear & crack much worse than the correct rubber item.
While these were "the thing to use" a few years ago, those in the know are switching back to rubber. It looks much better than a purple, red or fluorescent green bush & doesn't crack & loose its elasticity. While there are serious benefits swapping to rigid materials like Tufnol or even Aluminium in competition cars the drawbacks hugely outweigh the advantages in normal road use.
And finally, all that vibration & movement has to go somewhere, it doesn't just vanish!
The vast majority of Poly Bushes offered are made of inferior material & will wear & crack much worse than the correct rubber item.
While these were "the thing to use" a few years ago, those in the know are switching back to rubber. It looks much better than a purple, red or fluorescent green bush & doesn't crack & loose its elasticity. While there are serious benefits swapping to rigid materials like Tufnol or even Aluminium in competition cars the drawbacks hugely outweigh the advantages in normal road use.
And finally, all that vibration & movement has to go somewhere, it doesn't just vanish!