Sure, the easiest way is to cut the old tire off and then the part around the bead comes off a lot easier with the rest of the tire cut off. Just put the new tire on the side that does not have the sprocket. I had to do the same thing with this wheel on the Sportsman where the sprocket was welded to the wheel.
Looks like a 5/8 axle and the bearing should pop out when you come from the back side with a punch or something like that. On mine I just sanded and cleaned the wheel and sprocket and taped each off so they could be painted different colors. I am not sure if the powder coating the sprocket may have too much build up but someone else may be able to chime in on this since I have only painted sprockets and not powder coated them.
