I like the NGK Iridium plugs. BR8EIX. They are about $10 retail but seem to be a good plug. I usually carry a BR8ES in my fanny pack for a spare. I've never had a problem with either plug or really notice a difference in performance from one to the other. I just figure the Iridium would be less prone to fouling. Plus it costs more so it has to be better, right?
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