NGK is setting standards in meeting highest quality demands. By employing progressive engineering we ensure a performance level to satisfy also extreme conditions. Standard Model: * OEM Quality * Triple-Gasket Sealing Process * Consistent Performance * Plug of Choice in Millions of Vehicles Iridium Model: The “secret” of the Iridium IX spark plug is its laser-welded electrode made of iridium. Thanks to its exceptional thin diameter of 0.6 mm it bundles ignition voltage, thus improving combustion at any speed. The engine runs smoothly, the motorcycle accelerates faster. Also, the high-tech metal iridium keeps the distance between the electrodes completely stable, thus preventing the engine from backfiring. Compatible with: - Honda: CB 500 94-03_M, CBR 600 93-94_M, CBR 600 95-98_M, CBR 600 99-00_M, CBR 900 92-93_M, CBR 900 94-95_M, CBR 900 96-97_M, Hornet 600 03-04_M, Hornet 600 05-06_M, Hornet 600 07-10_M, Hornet 600 98-02_M, VFR 750 88-89_M, VFR 750 90-93_M, VFR 750 94-97_M, VFR 800 98-01_M