50cc GY6 Carb Jets - Racing main jet for GY6/ QMB139 50cc 4T
Racing main jet 78 for GY6/139QMB 50cc 4-stroke engines. Get more power by upgrading your jets. Item GY6078.
Racing main jet 78 for GY6/139QMB 50cc 4-stroke engines. Get more power by upgrading your jets. Item GY6078.