Super X
The design of the Super X was a considerable departure from its predecessors at Excelsior. Where earlier Excelsiors had an enclosed primary chain transmitting power from the engine to a separate gearbox, the Super X had the engine and transmission together in a single crankcase, using a helical gear to power the transmission directly from the engine. The Super X also marked the return of leading-link forks on Excelsior motorcycles, which had earlier switched to trailing-link forks similar to those used by Indian but with coil springs instead of Indian's quarter-elliptic leaf springs.