Best spark plug in the market, iridium is always better than others. Engine response is better than before, more refinement. People says it's lifespan is 40-50000km. I will change it 35000km. Instantly change your stock plugs if those aren't iridium.
Amazing difference. Huge shoutout to race dynamics for providing such products and support.
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LRL for me is now the most trusted with amazing after sales service. Not going anywhere now I found my website.