What is the current width of the tires you have?
You typically want wheels a bit narrower than your tires...
What kart is that? If it's known what is on the original equipment, the same size rims can likely be found.
But basically a 6" rim like the one you linked to would work.
Are you going to stay with the same size and type of tires?
What is the current width of the tires you have?
You typically want wheels a bit narrower than your tires...
Why not grind or sandblast your present wheels and repaint or have them repainted?