NGK (6681) DR8EIX Iridium IX Spark Plug, Pack of 1

Nice quality sparkplug. Fine tip iridium for long wear and seems to help my old Yamaha xt350 for better starting and to run a bit smoother all rpm’s.

Starts and runs better!

Bought this for my X-pro titan 250. Fit perfectly and works as it should. Not much else to say about it. Bike fires up every time effortlessly.

I've recently changed to the Iridium plugs for my Honda XR200R. The bike starts on the first kick and hot restarts are a lot smoother.

I debated getting these because I had read speculation that I'd need to get non-resistive plug caps since these plugs have built-in resistors. Honestly, perhaps the additional resistance might make a difference in terms of attenuating spark or intensity at much higher RPM than I tend to run, but I rarely exceed 7000RPM in my old Honda CM400C and I have noticed no weakness or decrease in performance at higher RPM. On the contrary, I love these plugs because they seem to start faster and more reliably, burn cleaner than the stock plugs, and deliver excellent and consistent performance and quick acceleration. They seem "forgiving" when the engine isn't tuned perfectly. I use them with the stock resistive caps. I think for most people, the higher resistance will not make any difference and is more of a consideration in terms of eliminating high frequency radio interference, not altering engine performance. These may be "overkill" for an old classic bike, but my expectation is that they will last longer and perform / start more consistently in a wider range of temperatures, paying off in the long run.

Tiene un mejor encendido mi mortalika 250z

Spark plugs are all the same, right? Not so much apparently. After doing some research on the subject, I found that since Iridium is so much more tolerant of heat and abuse, the center electrode can be a fine wire which creates a tighter and more consistent spark and will not melt when it gets up to combustion temps. I noticed immediately that my bike ran better- after the engine warmed up, I found I had to turn the idle down a bit. Engine revs quicker and starts much easier- noticeably so. The old plugs only had 3k miles in a Honda 750 4cyl and were tan and fairly clean.

Excelente respuesta a encendido en frio