Why doesn't Triumph recommend the Iridium plugs? It seems that NGK would cut them a deal if they switched to the more expensive iridium plugs as OEM since they would recoup the money many times over on replacement plugs. I've been a fan of Bosch Platnium plugs for a long time, but can't prove that they are any better than a regular OEM plug. They just make me feel better because I think that I'm using some new technology or materials. I have a local wrench turner that I have used for repairs on throw away cars, trucks, etc. and he felt strongly that only oem plugs should be used.
I'm going to check with the Advance Auto Parts store today to see if they can order the NGK Iridium plugs for my America. They may be 50%spark plugs and 50% snake oil, but I'll feel better thinking I've made an improvement. Before I put the new plugs in, I'll balance the carbs and get the bike running as good as I can, so if there is any noticable difference, maybe I can attribute it to the plugs/snake oil change.
