A 400cc engine may not seem like much, but these pocket rockets are all capable of impressively high speeds and acceleration.

a 12.4-inch ground clearance, 33.9-inch seat height, and 218-pound claimed wet weight. Compared to the other bikes here, its air-cooled SOHC four-stroke has the smallest displacement of 144cc.

4 Stroke, Air-Oil Cooled Engine, Spark Ignition, Single Cylinder Single-Cylinder, 4 Stroke, Air-Oil Cooled Engine ...