In 1914, they offered a JAP-powered twin. A deal to supply the Russian Imperial government with motorcycles ended with the revolution, and Excelsior wound up with an excess inventory as a result.

The Walker family (father Reginald and son Eric) took over after World War I. R Walker & Sons of Tyseley, Birmingham had started as makers of ships lamps but in 1919 had made a range of motorcycles under the Monarch