Wow! Great Mod. 90cc Naraku Big Bore Kit on a Maddog 50cc 139QMB GY6. Way Faster

I installed and tested the Naraku 100.52 89.3cc BBK and Big Valve Head on a IceBear Maddog 49cc Scooter.    I was torn between this and the Taida 88cc kit.  Both are made in Taiwan and should be good quality.  

How to Install a BBK:  The Complete and Definitive Tutorial ...