I got it with the 105 stuff and I also got professionally fitted for the first time ever. Made a HUGH difference. My climbing position is now way better and I can feel bike move under me as I climb. I'm planning on doing The Climb to Kaiser next month...13,000 ft elevation gain. I know this bike will make a difference. I live in the foothills so all of my ridding is mounatins. I just can't say enough about it.