4 NGK Spark Plugs Suzuki GSX1300R Hayabusa 99-07 CR9EIX
4 New NGK Iridium IX Spark Plug CR9EIX # 3521, 10mm Thread, 19mm (3/4") Reach, 5/8" (16mm) Hex Size, Gasket Seat, Resistor, Stud Terminal, Fine Wire (0.6mm) Iridium Center Electrode, Tapered Cut Ground Electrode, .032" (0.8mm) Gap, Heat Range 9. NOTE: Does not include terminal nut