Quote:
Originally Posted by katoranger
It appears that the xt250 has a 74mm bore and a 58mm stroke.
I wonder if there is any yamaha pistons that may fit.
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If the piston pin is the same size, one could have a machinist overbore the ZS250GS cylinder to 74mm. Then it would be possible to use XT250 pistons and piston rings. The bike would also gain a little more engine displacement.
Spud
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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