TL*THE CONTACT OWNS A 2008 KTM 530 EXC R MOTORCYCLE. THE CONTACT STATED THAT THE VEHCILE FAILED TO START AFTER SEVERAL ATTEMPTS. THE FAILURE OCCURRED WITHOUT WARNING. THE BATTERY WAS REPLACED. IN ADDITION, WHILE DRIVING 60 MPH OR GREATER, THE FRONT END WOULD PULSATE AND WOBBLE EXCESSIVELY. THE SPARK ARRESTOR DETACHED FROM THE VEHICLE DUE TO THE EXCESSIVE VIBRATION FROM THE FRONT END. ALSO, THE EXHAUST PIPE BURNED A HOLE THROUGH THE REAR PASSENGER SIDE TURN SIGNAL BLINKER. THE HEADLIGHT FAILED AND WAS INOPERATIVE. THE VIN WAS UNKNOWN. THE FAILURE MILEAGE WAS 1 AND CURRENT MILEAGE WAS 450.