Technology / Motorcycle / 2-Stroke: A 2-Stroke is an engine (also known as a Stroker) having two strokes per cycle. The combustion stroke occurs when the piston moves down allowing the exhaust gases to exit through an opening. The compression stroke is the upward movement of the piston where the air-fuel mixture is drawn in and the spark plug ignites the mixture causing an explosion, thereby forcing the piston back down again.
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