I have a zoom bicycles 66cc slant motor arriving later this week. But i happen to be going to a great parts store that i rarely visit because of distance. Anyway, i want to buy a higher performance air filter. Maybe a K&N style cone filter or something similar. The options in the store are endless. But, not having the motor yet (and being a first time builder), i have no idea what the diameter of the hole should be in the air filter to easily fit the intake pipe. Is there a standard or does anyone know specifically about the zoom 66cc. Thx guys!
