Hey I'm trying to get my motorbike up to 80mph.   I installed a window port piston but it's the only thing bogging it down n making problems.    1yr of BS.  I tried a HP carb, a PZ22, etc.   But there's gotta be a way to increase performance of 80cc engine.    I want higher HP, higher low end top end speeds, faster acceleration, better control, etc.     What's everything u have to say bout that?
							
							
						 
How does your engine of choice direct valve cover gasses? Replicate it as best you can. I don't have a stock engine to refer to. Photos of the engine you settle on for your build. ON YOUR thread.
Tom