I am going to be overhauling the entire suspension on my '90 GXL and I have already decided to get the Energy Suspension polyurethane bushing kit. But I noticed that MazdaTrix also has rear subframe bushings made of DELRIN available.

Has anyone tried these out before?
How does Delrin compare to polyurethane?

I'm not too concerned about harshness and I am very interested in getting the BEST feel from the car. No expense will be spared when it comes to the suspension. Please, tell me everything you know.

 

BTW
These are the bushings I plan on ordering:
http://www.rx-7parts.com/product_inf...roducts_id/251

It says that they are GRAPHITE IMPREGNATED. I am assuming that means they won't squeek. Any input/experience with these would also be appreciated.

 

I have them on my car.

Love them, but never compared them to Urethane.

They will wear out though, don't have an estimate on how long.. You guys will put way more miles on them than I will in the race car.

PaulC