I've got 22,000 + miles on my 06 883. I bought it wrecked. The mileage then, a year ago, was around 10K. The bike sat for a year outside in an apt parking lot before I bought it. I have had no leaks and no mechanical problems. She runs like a champ.
No mine LOL! all before 20k Rocker box gaskets towice, rear head gasket, and spring plate in the clutch went out. The bike has never not started or left me on the side of the road, but I have had my issues.
'04 1200C, the OL's bike, has 47,605 miles. Nothing but a crank position sensor last year. She's trading it for a Dyna Switchback in a couple weeks.
Mine, an '05 883C with 19,991 miles and zero problems.