Understanding Two-Stroke Engine Power

Ever wonder how a two-stroke engine makes power with just two strokes? Let’s break it down

— fast. In a two-stroke, the piston only moves up and down once to complete

a full power cycle — that means it fires every single revolution of the crankshaft.

That’s why two-strokes are smaller, lighter, and way more powerful for their size.

First stroke — the compression stroke. As the piston moves up, it compresses the

air-fuel mixture inside the cylinder. At the same time, fresh fuel is pulled into the crankcase.

Right before the top, the spark plug ignites the mix — boom — that explosion forces

the piston down. That’s your power stroke. As it drops, the exhaust gases