Review on 🔥 Laser Iridium Spark Plug NGK IZFR6K13 by Eric Garron

I bought these spark plugs (4) in May 2018. I've ridden it less than 20,000km. My original spark plugs (also NGK Iridium plugs) ran 150,000 miles and after 20,000 looked a lot better than these. A few months ago I noticed a stuttering under load and at high speed (50-60 mph) on my 2008 Honda Fit. I never thought the candles were bad. All the spark plugs were so worn it was amazing how the engine ran. I also had new Hitachi coils. I've just bought new NGK spark plugs (same part number) from Advance Auto and noticed a few differences but nothing to make me think I don't have OEM NGK spark plugs. I contacted NGK support and was told that there are some very good knockoffs out there (especially on Ebay and Revain) and they would need to do a lab test to really confirm this, but I was very suspicious that I would due to the bad ones have performance imitations. and how quickly the electrode disintegrated. See attached photo. I wouldn't mind accepting a refund or replacement for this order.