I got to 4000 and mine died as well, I know this is an old thread, but I thought I would add that in, it's an '06 and it's a P.O.S. , here is a response to a chinese bike thread on another site I posted, I thought I would share it here.
"Nothing wrong with Zongshen, just the guys in America that put them together or work on them. I bought mine from a place called "TRADE USA" in Ringold, GA, they actually glued parts together, put too much oil in , took too much out, "fixed it" in "Fixed it" Again (6 mos. process) only for it to break down on my way home, they are IDIOTS, lying, cheating idiots, with crackheads as mechanics and if Zongshen knew that these yokes were representing them in America they would have their heads.....I now have a 2006 250 GS with 4000 miles as a lawn ornament, DON'T BUY FROM THEM !!!!"
new to this forum, by the way. Thanks in advance
B