The piston, which receives high heat and great force as the mixture combusts and expands, acts as a guide for reciprocating motion and cools the cylinder appropriately to firmly support the crankshaft.

A part that fixes the stator and supports the bearing part of the rotor in the motor body, preventing harmful substances such as foreign matter, dust, and water from entering the motor, while extending the life of the motor and shortening assembly time. .A part that fixes the stator and supports the bearing part of the rotor in the motor body, preventing harmful substances such as foreign matter, dust, and water from entering the motor, while extending the life of the motor and shortening assembly time. .