NGK Iridium IX Spark Plugs for Big Twin/Evolution 80 Inch '84-00
The ultimate in spark plug technology and performance from the industry leader
The iridium electrode is 25% smaller than a platinum electrode, and it’s just 1/4 the size of a conventional nickel electrode
Ultra-small diameter center electrode reduces voltage requirement and extends ignition system life
New metal shell plating has enhanced anticorrosion qualities
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