|
The Zongshen 200 I own has a 167FML engine which has a 67mm bore and 56.3mm stroke making it 198cc, so they use that same bore on a 200cc and a 230cc engine. I would think a square to undersquare engine would be best for ATV use because of the low end power but a 200cc engine with a 71mm bore would have a 50mm stroke and be quite oversquare.
|