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Your cart is empty.Designed specifically for the performance enthusiast, Iridium IX offers extreme ignitability, improved throttle response and superior anti-fouling. The 0.6mm laser welded fine iridium tip ensures high durability and a consistently stable spark and the tapered ground electrode minimizes electrical quenching effect. Longer insulator nose prevents fouling, the corrugated ribs on insulator prevents flashover, and a triple gasket seal eliminates combustion gas leakage. Iridium alloy has extremely high melting point, giving it high durability to heat and electrical wear, perfect for today's high-performance engines. Trivalent metal plating has superior anti-corrosion and anti-seizing properties.
Don
Reviewed in the United States on May 27, 2025
Starts and runs better!
DELRAPH
Reviewed in France on May 21, 2025
Super bougie Iridium je recommande
Mikael Nilsson
Reviewed in Sweden on January 11, 2025
Högkvalitativt tändstift som fungerar bättre till mc:n än orginalstiftet- rekommenderas.
Keith P.
Reviewed in the United States on April 28, 2025
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.
Juan José
Reviewed in Spain on April 20, 2025
Buenas bujía
Christina Clark
Reviewed in the United States on July 7, 2024
Bought this to replace the stock plug in a Hawk DLX EFI 250. Has worked fantastic and I am very pleased! Zero issues
Massimiliano
Reviewed in Italy on July 28, 2024
Ottimo prodotto
Dan
Reviewed in the United States on March 15, 2024
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.
Fixermun
Reviewed in the United States on December 23, 2024
Better spark means better starting
Román
Reviewed in the United States on November 4, 2024
Excelente gracias
Customer
Reviewed in the United States on November 16, 2024
Good
Alan Cervantes Rosas
Reviewed in Mexico on June 5, 2020
excelente calidad
Anthony Coghlan
Reviewed in the United States on September 15, 2014
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.
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