PST or Bergman LCA bushings and pivots?

I used polyurethane on mine. I've done extensive design work with delrin and a few other plastics and I wanted to have SOME give in the suspension. I don't want every little bump and jolt transferred to the rest of the car.

Besides, I've seen delrin fracture, especially when cold, and I didn't like the idea of that in an application that sees....impacts.

I mean, my experience is that as far as ride quality and vibration the poly and Delrin are very similar. It’s not like I installed the Delrin and suddenly noticed more road vibrations. I get the theory on it and the Delrin should transmit more. But from the real world? I didn’t notice any increase.

I’ve been running the Delrin LCA bushings for about 5 years now, and that definitely includes driving in sun freezing temperatures. Haven’t had any issues so far. I know Peter has been running his a lot longer!