^^Agreed coz ive had plenty of fun with a lifan 125 and im used to riding bigger bikes like CR250s and KTM400s but the 125 Lifan can give enough power to do do whatever you want if you know how to ride it.
What do you want the extra power for?
As mountain said can you ride your bike to its limit? Another way to put it would be do you use all the power the bike has to offer at the moment?
Maybe if u want some more top end and are willing to sacrifice a little bottom end u could try a different sprocket set up as a cheap upgrade. Im not sure what set up u currently have so it was just a thought.
i've gone from riding a vert 125 to riding a ciniworx150pro
there is no comparison
i use to run the ring out of the 125 but in doing that i was fast
now without flogging the crap out of the 150 i'm even faster
and i tell ya the experiance of riding big bikes and riding a decent mini in the vert has paid off big time
sept i hert my knee again on sunday bloody frankston sand sheesh
10cc isnt all that much difference! for the price id go for a 140... the only minus the 140 has over the 150 would be the removable oil filter, and the 10cc difference (aswell as bigger lift cam etc etc)
mate you would be amazed how much differance between the 2 is
the 140 feels lame compared to the 150
how this is i dont know but the differance is huge the combination of bore size cam no oil slinger dunno but they go way harder than a 140 in all aspects
i think there's like a 3-4hp differance which is not much but it equates to heaps of power and speed