So I'm looking at getting a yamaha yzf 125. However I couldn't find much information on if the performance has changed between the years. I know the aesthetics have, however I'm wondering if there is any noticeable difference in performance throughout the years.
I’d be very surprised if there was even a 2bhp difference but with the emissions rules getting tighter and tighter I would guess an older one would have any edge to be had over a newer one.