1926 JAP engines were standardized - 344cc and 246cc ohv and 490cc sv singles, plus a 490cc ohv model with a 90mph speed guarantee. All had Burman gearboxes.
1927 There was a three model range, still with Burman gearboxes. These were a 349cc ohv oil-cooled Bradshaw model, and the 490cc JAP, in either sv or ohv forms. Superports options were available on the Bradshaw and the ohv JAP.
1928 The 344cc returned, in two-port racing trim, and 346cc ohv JAP models, plus a new 498cc ohv JAP racing machine. After this, the marque folded and the works closed.
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