NGK's wide heat range results from using copper wire in place of the iron cores found in many conventional spark plugs.
NGK DPR7EA9 Spark Plugs Pack of 2 Suzuki VL 800 Volusia 2002
Kawasaki ER6 ER-6 NGK Iridium Spark Plugs CR9EiA-9 x 2 (6289 set of 2 plugs)
4x NGK Iridium Spark Plugs HONDA CBR900 Fireblade 929 00-01 CR9EHI-9 6419
NGK Iridium Spark Plugs CR8EHiX-9 x 4 for Honda CBR400RR NC29 Gull-Arm 90-94
NGK Iridium Spark Plugs Honda CBR1000RR Fireblade &SP IMR9E-9HES 2008-2016
NGK Iridium Spark Plugs Honda XL750 TransAlp SILMAR8A9S 2023-2025
