When it comes to spark plugs, NGK is the World Leader. Makers of spark plugs, sparkplug wires and oxygen sensors for virtually every automotive, motorcycle, marine, industrial and small engine application, NGK dominates the world market. NGK is famous for the “V-Groove” sparkplug, the Iridium IX sparkplug and platinum plugs. NGK sparkplugs, wire sets and sensors are used for racing, high performance, sport compacts and light trucks. NGK Iridium plugs are exceptional for use in nitrous fueled, fuel injection and turbo charged engines. In Short... If you're expecting high performance levels from your engine...it needs to have an NGK! Now...it can! APPLICATIONS: HONDA 500 RUBICON