A flat-4 engine has 4 cylinders arranged in an opposite direction together a typical crankshaft. The pistons transfer faraway from one another simultaneously. Illustrations are Honda CB750 and BMW K1200RS. The fork is basically a two-legged part on the frame that retains the front wheel in place. A single part https://dirt-bike-engines71346.angelinsblog.com/34159068/chair-lift-seat-fundamentals-explained