Yeah, I was wondering about that too. I have a triple on my current bike and we do a LOT of climbing in my regular riding, but the TT route and the routes on the races I'm considering are mostly rolling hills. I think I'm ready to go to a compact double but I don't know if I can get that on the systemsix. I wish I had time to go down and find out more but I'm busy after school every day this week. Maybe Thursday...