4 NGK IMR9C-9H Laser Iridium 3/4 x10mm Spark Plug CBR600RR 03-04, CBR1000RR 04-05

Features:

• The ultimate in the evolution of 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