The Rigid Collars will not come off again when installing the other parts as they are pressed on between the mainframe and the subframe. Ther rear flexible support installation requires the removal of a couple of rear subframe bolts.for digging up this old post, but I am really interested in this setup. I bought myself a 2011 sti with a stock suspension setup, so I have ‘carte blance’ on this.
Is there a particular order in which these parts need to be installed? When I install the spoon collars and S206 subframe bolts, will they have to come off again for other parts?
There is no particular order that I know of to install these parts, but I would just install the entire S206 NBR chassis parts together in one go. You may install the Rigid Collar first before it if you want.