Hi all , i recently purchased a 2004 450sx that im using for ice racing but it was a x AMA factory KTM supermoto bike very highly built unit , im pretty sure id like to run this season , questions are its a 4 speed what gearing should i be running? and as far as tires? do i have to run supermoto specific tires? i have a set of dunlop slicks but id rather run pirelli , and other info that i could use would be great thanks