YAMAHA Motobike Series YZ 450 12"-Boy YZ 450 12"-Girl YZ 450 14"-Boy YZ 450 14"-Girl YZ 450 16"-Boy YZ 450 16"-Girl YZ 450 16"DS-Boy YZ 450 16"DS-Girl YZ 450 18"DS-Boy YZ 450 18"DS-Girl YZ 450 20"DS-Boy YZ 450 20"DS-Girl