Is the nx5 front wheel a direct fit? Is it hrc or magtek? What's the weight?

There not a direct fit but only require spacers, weight will depend on size 3.5", 3.75" etc but theres a weight list thread buried somewhere on the site with lots of wheels listed

on the rs250 3.5" wheel there's no magtek brand casted. So what are them Hrc magnesium or simply light alloy rims?

Mines the same i assume there hrc wheels