In physics terms, the volume of the cylinder is related to how much work the fuel does as it expands, how much energy it transfers to the piston, and (if we consider how often this happens), how much power the car makes. So the bore and stroke are very important—and that's why ...
Single Cylinder 4 Stroke, Air cooled Bore ... 70mm Stroke ... 90mm Swept volume ... 346cc Compression ratio . 8.5:1 Max. Power BHP @ RPM 19.8@5250 Max. Torque in NM@RPM 28@4000 Idle RPM ... 1050+200 Starting ... Kick Start ... E-Start Air filter element ... Paper ...