Chinese Scooter Flywheel Magneto GY6 50cc 139QMB 8 Pole Stator V FW04 Review HuggingUrchin July 13, 2018 November 7, 2018 No Comments on Chinese Scooter Flywheel Magneto GY6 50cc 139QMB 8 Pole Stator V FW04 Review This fits your . Make sure this fits by entering your model number. MAGNETO FLYWHEEL for GY6 49cc 50cc 139QMB Condition: Brand New DIMENSION: 109MM OD, 90MM ID, 32.50MM WIDE Keyway hole 11mm Scooter Flywheel for 8 pole stator