My Zongshen ZS200GY-2 ran for 70,000 miles, until I submerged the engine in a mud pool.
However, I have resurrected the bike with a heart transplant, a 1992, Yamaha XT225 engine.
If you wish, you can read about my engine transplant at the following thread.
http://www.chinariders.net/showthread.php?t=15995
Zongshen builds good motorcycles with excellent engines.
__________________
Spud
"Never argue with an idiot. He will drag you down to his level, and beat you with experience."
Mark Twain
2015 Zongshen ZS250GY-3 (RX3)
2006 Zongshen ZS200GY-2 (Sierra 200)
2005 Honda XR650L
2004 Honda CRF250X
1998 Kawasaki KDX220
Mods made to my Zongshen ZS200GY-2:
http://www.chinariders.net/showthread.php?t=6894