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Ngk spark plug Iridium for WR450f?

169 Views 0 Replies 1 Participant Last post by  Tex91
Have a 2022 wr450f which calls for a ngkLMAR8g spark plug.

The IRRIDIUM equivalent is ngk LMAR8g—8. I’ve had good luck with IRRIDIUM plugs in the past and wanted to run one in my bike.

upon comparison the iridium plug is 1.5mm extruded. NGk’s head tech is saying he can’t find any info on it and does NOT recommend running.

Has anyone tried this plug, and had luck? Just don’t want to damage my cylinder.

thx in advance
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