Cylinder Body 50mm GY6 Big bore QMB139 139QMB
Weight:0.998 kg
87820* Bore: 50mm
* Please see picture for measurements
Upgrade 39mm/50cc to 85cc/50mm
50mm Cylinder for GY6 for upgrade GY 50CC 139QMB 139QMA scooter Engine. Works with engine code like 139QMB 139QMA. They are mainly used on Chinese 49 or 50cc 4 Stroke Air Cooled Scooter/Moped, like Baotian BT49QT or Benzhou, Jinlun 50QT etc