Impossible to pick 1 of each as I've done too many mods and their all my favorites, they all make my X what is is today compared to its standard form so I'll have to pick 2 of each

for performance..remapped ECU/Modified exhaust result = 203Kw/615Nm(diesel), for exterior..X6M wheels, 4.8is lip spoilers. Sorry I cheated. (Also done Stoptech big brake kit all round, lowered with Eibach springs, Le mans wheelarch flares, BMW Motorsport International badges, Thats all.