I was wondering if anyone knows if a 125 two stroke is any bigger than a 125 four stroke? if you can help it would be great thanks

 

I would guess the 2 stroke would be more powerful.

 

I'm partial to the three wheelers myself but i'm not sure what your asking.
Bigger? please clarify - cc's? a 125 is a 125 despite the type of fuel. Actual engine size? usually the two stroke is smaller and lighter not having the valve train the four strokes had. Bike size? I guess it depends on the bike, I can't think of too many 125 two stroke trikes. And I agree, In general the two stroke should be more powerful than the four back in the trike days.