320MM Front Wavy Floating Brake Disc Rotor For KTM EXC GS MX SX SXS MXC XCW EXCF SXF XCF 125 144 150 200 250 300 350 380 400 450 320mm floating brake discs bracket for ktm sx xc xcw sxf xcf xcfw exc 125 144 150 200 250 300 350 450 505 530 pit bike motocross