Piaggio Vespa Piston Gudgeon Pin PX200, COSA200, RALLY200
Gudgeon pins are designed to connect the conrod to the Piston. Normally to keep the gudgeon pin from moving, the Piston has indentations for circlips to be fitted. Each Vespa model will have its own size Gudgeon pin which is unique to that particular product.
Standard size
16??59 mm