Question: what is a 2 stroke moped?
Answer: A 'stroke' is just the piston moving up or down. So in a 2-stroke engine, the motor breathes in fresh air/gas, squishes that, ignites the mix and then expels the exhaust all in just two strokes. So this means that every time the piston is moving downward the air/fuel mix is “exploding” and the engine is making power.