NGK be the plugs to run. A lot of these funky wire tip or 3 electrode plugs are designed for lean burn fuel injection systems. Not the right application for a bike motor. But run whatever you want, you'll only find NGK in my motors. If you do run any other junk, at least put anti-seize on the threads before cranking them into your motor. NGK has a Trivalent plating and the last I checked, steel expands differently than aluminum and you increase the chance of losing spark plug threads in the head after heat expansion and oxidization. Once this happens, a thread repair insert need be installed. Sure the issue is cured but now you have another issue... one cylinder is heating and cooling at a different temp than the rest because the spark plug insert acts as a heat sink. So you might as well go and insert the rest of the spark plug threads so they all transfer heat the same..... or run NGK plugs to begin with...lol
~Gimpster~
