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: - Kawasaki: ER 6n -08_M, ER 6n 09-_M, ER-6F -08_M, ER-6F 09-_M, GTR 1400_M, Versys 650_M, Z 1000 07-09_M, Z 1000 10-13_M, ZX-10R 04-05_M, ZX-10R 06-07_M, ZX-10R 08-10_M - Suzuki: B-King_M, GSX R 1000 07-08_M, GSX R 1000 09-11_M, GSX R 1300 08-_M, GSX R 600 08-10_M, GSX R 750 08-10_M - Yamaha: R1 02-03_M, V-Max 1700_M