NGK Iridium IX Spark Plugs for VTX1800C '02-06, VTX1800F '05-08, VTX1800N '04-08, VTX1800R '02-07, VTX1800S '03-08 
 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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