I have a knocking noise when braking and reading through the last service record it shows that the lower control arm bushings might be bad. I was looking around and found some poly bushings by a company called Powerflex. Does anyone have experience with them? It looks like they make a full kit that I might be interested in just for a refresh and possibly to improve handling. Let me know what you think.

Thanks!

https://www.powerflexusa.com/shop/ca...2002-2009-1847

 

Do a search on the forum. There are several threads about poly bushings.
My experience when I put some in the rear lower control arms on my of my STR was downright scary. (Back of the car was pulled all over the road due to flexing of the bushings.)
2 of the 3 bushings in the rear control arms are very stiff mono-ball bushings. and you have to get poly bushings that are stiffer than the stock for the car to track properly.

Read this....

https://www.jaguarforums.com/forum/s...-bushes-98635/

There is another thread where someone install Powerflex and they worked for him.

 

Sounds like I am better off just replacing with OEM style. Thanks for that!