Unless it has been sitting outside in the weather or has been run in the rain there isn’t too much to worry about. TriFlo can handle just about anything that moves. Personally, unless its loctited I will use a light grease on some threads, especially if it is into aluminum, steel on steel I usually leave dry.
I washed the kart so it definitely got some water.
I sprayed it with WD right after.
I’ll spray Triflow in the bearings I guess but I’m not sure about the tie rod ends.