![How to Install Big Bore Kit on 50cc Scooter - Every Step Included! 80cc or 100cc GY6 139QMB Engine - YouTube How to Install Big Bore Kit on 50cc Scooter - Every Step Included! 80cc or 100cc GY6 139QMB Engine - YouTube](https://i.ytimg.com/vi/YksmLvbFFjM/hq720.jpg?sqp=-oaymwEhCK4FEIIDSFryq4qpAxMIARUAAAAAGAElAADIQj0AgKJD&rs=AOn4CLBoKu5IcDpWRQN8g2QczFQjLx1_rg)
How to Install Big Bore Kit on 50cc Scooter - Every Step Included! 80cc or 100cc GY6 139QMB Engine - YouTube
![DWCX 47mm Big Bore Kit Cylinder Piston Rings fit for GY6 50cc to 80cc 4 Stroke Scooter Moped ATV with 139QMB 139QMA engine - AliExpress DWCX 47mm Big Bore Kit Cylinder Piston Rings fit for GY6 50cc to 80cc 4 Stroke Scooter Moped ATV with 139QMB 139QMA engine - AliExpress](https://ae01.alicdn.com/kf/HTB1MrIwKkyWBuNjy0Fpq6yssXXa4/DWCX-47mm-Big-Bore-Kit-Cylinder-Piston-Rings-fit-for-GY6-50cc-to-80cc-4-Stroke.jpg)
DWCX 47mm Big Bore Kit Cylinder Piston Rings fit for GY6 50cc to 80cc 4 Stroke Scooter Moped ATV with 139QMB 139QMA engine - AliExpress
![Just finished the install of my 183cc big bore kit, TB performance crank, and oil cooler! Just waiting on my ECU to come back from tuning, and for my speedoDRD, Koso mini Just finished the install of my 183cc big bore kit, TB performance crank, and oil cooler! Just waiting on my ECU to come back from tuning, and for my speedoDRD, Koso mini](https://i.redd.it/pxhpuse77fk31.jpg)
Just finished the install of my 183cc big bore kit, TB performance crank, and oil cooler! Just waiting on my ECU to come back from tuning, and for my speedoDRD, Koso mini
![How to Install Big Bore Kit on 50cc Scooter - Every Step Included! 80cc or 100cc GY6 139QMB Engine - YouTube How to Install Big Bore Kit on 50cc Scooter - Every Step Included! 80cc or 100cc GY6 139QMB Engine - YouTube](https://i.ytimg.com/vi/0-GPXbM7qRU/maxresdefault.jpg)