Iridium IX – high performance spark plugs by NGK

With its Iridium IX spark plug, NGK has developed a genuine piece of high-tech. That’s because it has been proven by test results that Iridium turns an already powerful spark plug into an even more powerful one. The precious metal iridium can be found in alloys with other platinum metals, e.g. in Russia, Columbia, South Africa and Canada. Its firmness is what makes it special: It is not only harder than any other precious metal, but also resistant to most chemicals. Additionally, the silvery-white metal sparkling in the colours of the rainbow will only melt at temperatures as high as 2,450 degrees Celsius.

This precious metal is used wherever its outstanding advantages pay off. Today's fountain pens are made of it. So are electrodes utilised in the chemical industry and in astronautics. And it is the basic material for NGK Iridium IX spark plugs, allowing NGK to take a leap of quality in ignition technology.

A centre electrode made of iridium has a diameter of only 0.6 mm.

Simply more power – with iridium   The “secret” of the Iridium IX spark plug is its laser-welded electrode made of iridium. Thanks to its exceptional thin diameter of 0.6 mm it bundles ignition voltage, thus improving combustion at any speed. The engine runs smoothly, the motorcycle accelerates faster. Also, the high-tech metal iridium keeps the distance between the electrodes completely stable, thus preventing the engine from backfiring.