Replacememt Spark Plugs

What is an exact replacement for the stock Chineese spark plug on the 49CC bikes?

I know the Champion CJ8 and CJ6 will work, but which is the correct Temp Range and is the same length?

KillJoy

the correct sparkplug is NGK BM7A

Thank you. This is axactly what I was after.

KillJoy

Mine are BM6A's by NGK

Don't use the Champion plugs....they are meant for 4-Stroke lawn mower engines. NGK

thats what i use. BM6A's are a hotter plug than BM7A's.

Does it actually help anything ?

i use the champ, cj8 and it works perfect, and it is also for a 2 stroke, it is the best working plug that i have ever used, bosch, ngk ect, champ has my vote

Whats the benefits of doing this though ?? Actually run any better ?

I also want to know what's the difference with cold vs. hot plug.

Could some one please show which plugs are hot and which are cold (with brands), advantages and disadvantages of using them. Sorry if I have too many questions. Thank you in advance.

the benefits are 1 the stock china plug just sucks .

Take a momenet to read the link on spark plugs, its very helpful and you will understanda alot afterwards.

the Champion CJ8 is the best plug ive used so far for my X1... take my word for it.