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.
LRL for me is now the most trusted with amazing after sales service. Not going anywhere now I found my website.