Review on NGK 5545 Iridium IX Spark Plug - DPR9EIX-9, 4 Pack: Unleash Optimal Performance! by Inyong Dow
Better than the average plug.
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!
- Spark plugs and wires
- Not all fit
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