Triumph, BMW, & Kawasaki Sales Spares & Repairs.
Established for over 40 years and run by expert motorcyclists.
Fully authorised workshop.
A Brief History of the Marque
In 1923, the mechanical engineer Cavicchioli built an engine of 349cc with a bore/stroke of 86 mm x 72 mm using a cast iron piston, and a second piston with a smaller smaller diameter (35 mm) in the cylinder head, which had two spark plugs.
A similar design was used by Dunelt.
Sources: MC Storico Conti, et al.