I have two friends with R1's and underseat pipes. Your crotch is getting cooked at 350 for your entire ride. Extra sweat down stairs in summer. You come back to your bike 20 minutes after riding and the seat and plastics are all still hot to the touch. Goes good with 105 degree temps in summer.All of my friends on the (semi)older R1s with undertail exhaust complain about fire nuts. I wonder if it would feel the same here?