barry68v10 wrote on 12/31/69 at 16:00:10:Just a note: the plug that will work best will be DRASTICALLY affected by how lean or rich your bike is set up to run. Those with intake/exhaust mods will experience much different results than stock bikes. Drag engines with superchargers and wildly modified exhaust/intakes can't even run with stock plugs and many need recessed plugs to keep the flame front from blowing out...
Depending on mods, altitude, temperature, etc. each bike may be different...
I concur..so what is the benifit of the $10 or more I rad plug ?? longivity? me thinks thats the only benny...was in line @ the auto parts store today fellar ahead of me was asking for a differently gapged I rad plug clerk was puzzled, said you dont gap them or you 'll break them...they come pre gapped..
i ve asked for gap specs from auto parts clerks over the years and the most common response was the same , come to think of it suzuki parts guy here told that also..pulled the plug after my last service and it was gapped too small...a properly gapped ngk is my bet...