Nice ride JCM, you are going to be amazed. If you're not running a 48 rear I highly recommend you make the change. It really smooths the bike out. I love my 15. Really, a 48 huh? It seems that lots of folks say to go to a 50. What do you like about going one down on the rear sprocket rather than going one up? Very curious about your thoughts on that. I can't wait to ride it. I had a 2011 and liked it a lot, and know the newer bikes are much improved.