NGK standard spark plug for Honda Grom 125. This heat range is from 6 to 9. The higher the number the colder the Plug. Heat Range 6 is factory spec.Replacement...
CR9EHIX-9 Iridium spark plug is 1 step colder than standard.NGK Iridium Spark Plugs Honda Ruckus Metropolitan GET 50cc Engine.CR9EHIX-9 Iridium spark plug is a step colder than standard. Usually found...