I just installed one last week, and adjusted the valves along with it. The previous plug had developed a bit of brown fuzz from running too rich above 13,000 FT at the KTM Colorado rally. The new plug works great, but it is nothing earth shattering. After the install, I took the bike for a short 50 mile ride on some quick canyon roads. The bike felt strong, and the tappets were back to their tappy selves. The electrode on the IX plug is very small, slightly larger than a pin. I can't wait to see what it looks like 3000 miles from now.
2003 KTM Adventure 640