Using simple mountain bike parts, a few extras, and a little elbow grease, you could craft your own motorized ride with the Motoped Kit. You assemble everything using a Honda XR50 or pitbike engine and those aforementioned mountain bike parts and are left with your own snazzy motorized bike to cruise the streets with. The kit itself includes the frame, swing-arm, exhaust system, and more of the pieces you’ll need to assemble your new two-wheeler. Using a 50cc engine, you should get around 100+ miles per gallon and the overall ride should remain fairly quiet. You could buy a motorized bike, but what fun is that?