Quote:
Originally Posted by matt132006
the lifan 140 are gen 140cm .. it longer stroke the 125... im pritty sure 125 and lifan 140 pistons r same size  |
the barrells are the same length.the conrods are the same length.
125 piston is 52.4mm and 138 piston is around 56mm which makes up for the fuel displacement.the stroke of the crank has no effect on the cc as there both the same length.