it can be done but it will either be ugly or very expensive... the subframe doest;t really have space where you could modify the under tray and tuck the exhaust or piping up at all so it would have to be run under it which will leave it out in the open and would;t really flow with the lines of the bike maybe would interfere with the tire. to tuck it up higher like on previous men's you would have to get an aluminum subframe aftermarket because the poem one is magnesium and would be very difficult to modify. then you could modify the aluminum one and the under tray to allow the pipes to be moved up. with the proper head shield fabricated and installed it could work with some electronics moved. the new r1 doest;t have nearly the space in the tail as previous gen's and would be an extremely tight fit and the plate would also have to be moved but an under tail from an 09 would work. if you grabbed a set of the under tail pipes and go hold them up to the 15+ you will see what i mean.