The Excelsior motorcycle was produced by the Excelsior Motor Manufacturing Company of Chicago, Illinois from 1907 until 1931, latterly under the Super-X brand name. In 1921 Excelsior had acquired the manufacturing rights to the Henderson Four and the days of the big v-twins were numbered. Excelsior preferring to concentrate its resources on the Four and the newly introduced Excelsior Super X 45 ci (750ccm) v-twin. This was done to compete with the lighter 600ccm Scout Indian models that were very successful on the export markets. The New SuperX had a unit construction engine that looked in a number of ways similar to the Indian Scout engine.



He got the task to modernise the looks of the Super X Excelsior and Handerson models. The streamlined cast aluminium petrol tanks with instrument panel on top were among the most notable changes. More specs and user manual of Super X you can see in next overview.