INTRODUCED IN 1925, the Super X was the first of a new class of American 45cu. in. (738cc) machines. It was quickly followed into the marketplace by Indian and Harley-Davidson forty-fives. The new model featured a neat unitconstruction engine/gearbox.
Primary drive to the three-speed gearbox was by helical gear, and the engine was mounted in a duplex cradle frame with leadinglink forks. The Super X had exceptional performance and earned an enviable reputation; it is Excelsior’s most famous model. The design was restyled for 1929, receiving the “Streamline” look. The bike shown dates from 1930, the year before it was dropped.
|Model:||EXCELSIOR Super X|
|Capacity:||45.5cu. in. (746cc)|
|Power output:||20 bhp (est.)|
|Weight:||450 lb (204 kg) (est.)|
|Top speed:||65 mph (105 km/h)|
|Country of origin:||US|