extended high speed sparkplug for slow tight trails?

I'm curious if running the dpr9ea-9 (NGK) in the L would be better on slow trails on very hot days? Kind of a cunundrum I imagine.

I'm planning on dicing the front fender, can't afford an oil cooler at the moment.

Were planning a 700 mile trip and after seeing this spark plug recomendation I started to think too much. So does the low idling counter the plugs affectiveness for high temps?

If you're running stock airbox, jetting and exhaust it would be a good idea. With mods the chance of fouling at low speeds would be greater. I've run 9s without any problems. Works like you're thinking, slightly less likely to knock when lugging and probably very minimally cooler running temp.

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