i heard a few rumours that yamaha is making a raptor 770 which would be really cool but is it true?

 

No tranny problems on 2002 and up, at least none from people ive talked to. 770 wouldnt be very sensible, they dont have a motorcycle engine to base it off from, it would just be bored out. Besides there is so much more availible from the 660, it is so severely detuned, they could just make a few changes to it instead of drastic engine changes.