Review on 🛵 80cc Motorized Bicycle Bike Motor Sthus Cylinder & Piston & Pin Clips Wrist & Gasket Set - Perfect Fit by Daniel Fung

I bought this to replace the jug on my engine because the piston bearings were failing and the pin was damaged. The engine still ran great and had plenty of power. 4 years old 66cc. The pitcher had a horizontal scratch from a rocking plunger. However. I replaced it with this one. New piston and rings. The engine has lost power. I used to have fast acceleration even uphill. With that he turned it into a 49cc. I will return the original jug and get my power back. Even with a full jug, I had more strength. It works but not like my motor. Maybe the connections aren't as good or the bore is worse.