The Spark Plug Serious Enthusiasts Rely On.

Iridium IX® offers extreme ignitability, improved throttle response and superior anti fouling:

• Fine Iridium tip ensures high durability and a consistently stable spark
• Iridium alloy has an extremely high melting point, perfect for today’s high-tech, high-performance engines
• Trivalent Metal Plating - superior anti-corrosion and anti-seizing properties
• Outstanding acceleration, high fuel efficiency and durability
• Ultimate design, technology and performance.
• Longer life
• Improves idling & throttle response.
• Better electrode anti-oxidation
• Improved ignition
• Better electrode anti-erosion
• Allows the use of an extremely small diameter electrode (0.6mm) without compromising the spark plug's service life
• Superior anti-fouling
• Lower required voltage

This spark plug is one step colder than the stock plugs. All plugs have been gapped in house to 0.025" ready for fitment.