NGK 5545 Iridium IX Spark Plug - DPR9EIX-9, 4 Pack: Unleash Optimal Performance! Review

As an automotive enthusiast, I've used my fair share of ignition parts, but these iridium sparks take the cake. My analysis of this product showed that they give a cleaner burn, improved throttle response, and better fuel economy. The only downside is that they're a bit pricier than regular spark plugs, but the performance gain makes it worth the investment. Highly recommended!

I have the best technology I know of as I only have one large cylinder and I wanted to get the best bang for my buck! Def noticed an increase in performance over the original 17,000 miles on the stock NGK fork.

Spark plugs are all the same, right? Apparently not so much. After doing some research on the subject, I found that the center electrode can be a thin wire that produces a denser and more stable spark and will not melt when it reaches combustion temperature, as iridium is much more resistant to heat and mishandling . . I immediately noticed that my bike runs better - the engine revs faster and starts much easier - you can tell. I installed this in my 87 XR25r and it works great!