Australia\'s own, Robbie Madison at the night of world records, crusty demons unleash hell tour 29/3/2008 sets the world record for the longest jump ramp to dirt on a CR500 2 Stroke jumping a massive 351ft 11\" XD 11", 2008, 351, action, CR500, crusty, demons, extreme, foot, guiness, jump, Madison, melbourne, motor, record, Robbie, sport, world