According to NGK's site it's DPR8EA-9, stock #4929 with a gap of 0.035

Thanks Guys,

I am going to stay with the DPR8EA-9.

When I am not having trouble, I am not wild about switching to a better spark plug, or any other better part.

Kenny G

Kenny, copper is way more conductive than platinum. If you can get copper over platinum, go for it. The only drawback is the electrodes don't last as long with copper. The platinum is much harder. Copper plugs are also a lot cheaper. Just FYI. Both will run fine for you.

If you look at both plugs side by side you'll notice the center electrode to be much smaller in diameter on the platinum making up for the difference in conductivity .The heat range should be the same ,the standard plug should last 25,000 miles ,the platinum about double.I pull my platinum plug every year to check for fouling, and color,to make sure of conditions such as worn valves,guides,or rings.I then check the plug gap and reinsert the 6 year old plug.If your bike is running good the last think to carry on a trip is a sparkplug ,their to reliable .If you're not planning to put 25,000 miles on your bike this season a standard plug is fine.

Here's something I always do when changing plugs:
http://www.enginelabs.com/news/getting-the-most-out-of-your-ignition-spark-pl...

The idea is to move the ground strap away from the intake valve so it doesn't block the A/F mixture. It meets the spark quicker this way. You may need to buy a few plugs though. There's no rhyme or reason as to how the threads are started compared to where the ground strap is. You can always take back your unused plugs. It's a good reason for a ride!  

I'm wondering why they don't make silver point plugs, Silver has the highest electrical/heat conductance of any metal. Try putting an ice cube on a 1kg bar of silver, the ice melts instantly.

It's not hard to electroplate with silver or gold.
Low voltages will drag silver off a silver probe in water. I'd expect the voltages in an ignition system to blow a silver spark plug Up..