The dampers are relatively easy to install on my 2011 328i. You must use the fasteners that came with the shocks as the thread pitch may differ from that removed. The new bottom brackets are a standard nut while the factory nut is a flanged nut, so they bought some new flanged nuts and used them instead as they offer more surface area. You can get them (can't remember the size) at any hardware store and via FTP stream. Drive new from the factory!
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