What diameter springs fit which coilovers?

I ask because I was wondering if I could use standard 2.5 or 2.25 inch race springs like the Eibach ERS springs.

I know the Ground Controls take 2.5 inch diameter springs and use the Eibach springs.

What about the AMR, PIC, and Skunk2, coil-overs? Does anybody know what diameter springs they accept, and if a standard race spring will fit?

 

Skunk2: 2.5ID.

Pretty sure same for AMR and PIC.

 

So then you can swap any 2.5 inch spring on these coilovers?

 

If they fit qua length, yes.

Most spring lenghts on these type of coilovers will be interchangable.

And you can choose spring lenghts from the ERS catalogue.

 

Awesome, Thanks!