Electrical > Performance NGK Spark Plug > NGK Spark Plug CR8EHIX-9 3148- 3797 (CR8EHIX9)

These are the best plugs I've ever used, even if there's another engine electrical problem, they will still keep on sparking, and starting is so quick the battery lasts longer, even at very high rpm there's never a breakdown and my modified VTR revs higher than ever before. I always say "if you are using NGK Iridium plugs and have a breakdown, don't bother checking the plugs" thanks for such a great quality product that I definitely highly recommend.