Ahhh love this item. No more being caught off guard!!! BIKE OFF BIKE RUNNING AT 2K RPM http://www.kuryakyn.com/products.asp?bn=Honda&ci=2302 $38 from Mikes Honda Dealer in Appleton WI
I think you ment 4K, but the idea is the same. I have used these in the past and I think they are great and well worth the cost.
I also have one, and love it. Just wish I'd noticed I was buying chrome instead of black.. I need to paint it. there's no hysterisis to the display, so when the voltage starts to drop, it will flicker an LED as it bounces around in voltage. Very... distracting. But that's a good thing. The wires are tiny, though, which I found made it difficult to splice them into the harness with.