Located within the cylinder, the 4-Stroke Piston is a crucial Bicycle engine component. Connected to a connecting rod, this part moves in response to engine combustion. The result is crank movement from the transfer of force created from combustion that ultimately propels your bike. Designed with versatility in mind, this component is compatible with a wide variety of 4-stroke bike engines.
Part #28 on the 4-Stroke Diagram
4 Stroke Engine Part # 28-1 -- Piston