https://nloc.net/index.php?threads/will-ngk-tr55s-work.11573/
will NGK TR55's work? | National Lightning Owner's Club
I've read that they are only one or .5 heat range cooler than the TR5's (stock) and one higher than TR6's. With the mods listed in my sig, do you think they...
ngkworknationallightningowner