Some motorcycle engine names double down on cylinders with wild V4 configurations. Essentially two V-twin engines melded as 1, the result is often a compact nevertheless mighty 4-cylinder punch. These range between parallel twins to large flat-six engines. But their layouts, advantages and disadvantages could be a bit puzzling, so https://bikeengine2stroke16913.alltdesign.com/bike-engines-copyright-no-further-a-mystery-54136955