The workhorse, at the heart of smooth-running dirt bike or ATV engines around the world. O.E.M. quality. Triple-gasket sealing process. Consistent performance. Plug of choice in millions of vehicles. Note: Please verify spark plug number before purchasing. Spark plugs are NOT returnable. Detailed Specifications: Plug model: BR9EIX. 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 extremely high melting point, perfect for today's high-tech, high-performance engine. Trivalent Metal Plating - superior anti-corrosion and anti-seizing properties. Outstanding acceleration, high fuel efficiency and durability.