23+k in 2 years on my Green 04. Replaced a warped front rotor under warranty but everything else is pretty much good-to-go.

But there is a dark side. There aren't as many of these as there are anything else so the odds are higher that you'll get a bad Triumph more than a bad anything else.
This is my 4th Triumph (after a couple of BSAs and many Jap bikes). The machine I had before my current 04 America was an 02 America. It spent most of it's poor life at the service shop. Well, the shop... service is another thing all together. With less than a year on it, Triumph had to ante up a replacement, and not because they really wanted to, but they did.
So the odds are in your favor that you'll get a good one, as it is with any machine today (except maybe Kymco or some other groundbreaking new technology from Korea or China).