The retrofit kits listed below are basic kits only - according to vehicle equipment and retrofit package involved they still need to be completed by various items to be found on the following PTUs: 51-2259 bumper guards - item 1 / 2 / 3 / 11 / 13 / 14, 51-3723 M trim panel, front / bumper guards - item 4, 51-3724 M trim panel, rear / bumper guards / inserts, bottom - items 3 / 4 / 5/ 6/ 7, 51-2427 air ducts - item 1 / 7 / 9 / / 14/ 29, 63-0517 M fog lamp - all items, 18-XXXX rear silencer - depending on model For this retrofit there are no installation instructions. To be installed by skilled personnel only, best by a BMW partner. BMW is unable to accept any responsibility for operating failures and damages resulting from incorrect installation.