Some motorcycle engine names double down on cylinders with wild V4 configurations. Generally two V-twin engines melded as a single, the result is usually a compact nonetheless mighty four-cylinder punch. Hanger: part of frame or an attachment into the frame to which the derailleur is connected (see Derailleur hanger) Key https://finnlbrfq.spintheblog.com/35395210/bike-engines-copyright-for-dummies