NGK Iridium spark plugs have been developed to provide improved throttle response with reduced fouling for increased durability. The plugs feature a fine iridium tip which produces a better and more consistent spark for optimum engine performance. A trivalent metal plating ensures the plugs stay corrosion free and helps prevent the threads seizing.Provides a better and more consistent spark for optimised engine performanceLonger lasting than traditional copper core plugsCapable of withstanding higher temperaturesThis range of NGK Iridium spark plugs are successfully used in many kart race engines including Rotax, IAME Cadet, TKM BT84 and KF. The plugs are available in various heat ranges to suit different engines and ambient temperatures.BR8EIX - Suitable for Rotax Max engines on cold daysBR9EIX - Ideal all round plug for Rotax Max and a cold / mild weather plug for TKM BT82BR10EIX - Hot weather plug for Rotax Max and popular for IAME Cadet and KF engines