Five machines built for one number: the quarter mile. From a factory Kawasaki that outran supercars stock to the Harley-Davidson that became the first motorcycle ever under six seconds—this is drag racing at its most extreme. Footage credits for every clip are shown on-screen throughout this video. Subscribe for more machines built to break records—and sometimes worse. #Motorcycle #DragRacing #TopFuel #NitroHarley #Hayabusa #QuarterMile #MotorcycleRacing #RacingHistory #Motorsport #FastestMotorcycles #onelungracing