So since the pro came out they haven't announced an engine change, or claimed any better performance. Despite that, in '12 we got a new injection system, 13 we got a different cylander, and '14 different pistons (I believe). My 2013 pulls 2 grams more than my 2011 with a head did on the same clutching. The '13's felt snappier and a lot was attributed to the belt drive, but I think the belt drive covered up some engine improvements.
So those of you with time on the '15, do we yet again have an unadvertised stronger motor? And those in the know, any parts changed?
So those of you with time on the '15, do we yet again have an unadvertised stronger motor? And those in the know, any parts changed?