I have Eibach springs on my ST aswell. Have had them on my 2 Focus's before this aswell. Ford supplied parts & approved parts so wont mess up the warrenty. As for fitting, ive no idea, I had my work do them. 3.5hrs in total I think it was in the end.

Recomended by me.

Here's mine with them fitted.



Would like the rear a little lower but that can be sorted by carrying the full size spare wheel rather than the can of foam.