Brisk Premium LGS Racing DOR17LGS Spark Plug

For what it's worth, although it doesn't last as long as iridium spark plugs in terms of service interval, the difference is night and day. I can honestly say that my car's acceleration and response is much quicker than when I had a denso iridium twin tip or ngk laser iridium. I would recommend this to anyone who wants to feel the difference, just make sure to get the right heat range based on what performance parts you have on your engine. Thank you briskracing for making such a wonderful product.