Re: What typically fails on a ChinaGirl motorized bike
If you keep them small they will not interfere much with the air flow.
Mine are about 3/8" wide and 1/4 inch deep.
All of my modern dirt bikes came with them from the factory and none of them have issues with overheating, even when playing in the mud. High RPM and low MPH.
"It's a chinagirl. It's a sometimes fun little engine that often will break your heart. It's disposable.
Does not come with a fortune cookie."