Description Main Jet Kit for Gurtner Carburettor 50 – 72 Change the jets in your carby to assist with the fuel ratio, too lean go larger, too rich reduce the jet size. This kit is recommended for 50cc motors with a performance exhaust. For scooters with 70cc kits installed it is recommended to use the 75 – 98 jet kit which we also have available HERE *Performance scooter parts do not come with a warranty*
