Would this be for the stretch Red Barron bike?
No...The "S T R E T C H" is pretty much done. I've put close to 700 miles on it so far. The plug is for my current project, a board track influenced bike, drop tank, white tires...etc...The NGK will work, just curious as to if there is another plug.
Venice Boy- I looked at the Darringer Cycles site, and he says that those engines are 4 stroke hondas, but they look just like our chinese 2strokes. Do you know what engines this guy uses?
Tested low-profile spark plug for Happy-Time engines is Champion CJ7Y.Gap .028-.030.