KX 450 Plug color

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9/24/2020 10:24 AM

I just broke in my new KX 450 on T4 gas.
1.2 hours
This is my first FI bike and Im concerned about the plug color. If this was a two stroke I'd re jet.
Do I need a cooler plug or is this normal?



9/24/2020 10:56 AM

Pretty normal. There is no oil in your combustion chamber like a 2 stroke, one would hope.


9/24/2020 2:11 PM

Looks good to me.

Paw Paw


9/24/2020 2:43 PM


So with these bikes am I looking at the ground electrode, with is brown and the bottom of the threads with is black?
Or is white just good now? Cant find much explaining this.

Thanks again


9/24/2020 2:46 PM

How do the plugs look on your car?