How often do sparkplugs go on supercross bikes??

Question

this is on a 50cc

Answer 1

The same as normal ones.

Answer 2

50cc supercross? must be a new class. The reason most plugs foul is because the oil-gas mixture is too rich, try increasing the gas mixture to 40 to 1 or so, you might need new jetting, if you have put on a new pipe or bored it out to 1000 cc's put in new plug and check the color of plug after 10 min of riding, if black from oil raise the mixture until its brown