Ngk you can buy it at auto zone, advanced auto parts, o' reilly
What's does the fuel valve do on a 49cc dirt bike
what is a 49cc dirt bike
well, who rides a 49cc dirt bike just ride a 50cc
to start the dirt bike you press the red switch on the handle. then make sure the little black lever by the engine is down. then make sure the fuel is open.
no
yes
probably need the idle tuned up a little or you need to clean the carberator because it might be clogged.
the rear tire tube on a 70cc baja dirt bike is 3.0-12
30 to 45 mph
It's 40mph
25-27-mph standard top speed for a mini dirt bike
49cc