Road Cycling“It is by riding a bicycle that you learn the contours of a country best, since you have to sweat up the hills and coast down them. Thus you remember them as they actually are, while in a motor car only a high hill impresses you, and you have no such accurate remembrance of country you have driven through as you gain by riding a bicycle.” -- Ernest Hemingway
Hey all. I'm building a bike for my son and picked up really sweet Dura Ace wheels on the cheap. The rear is a Dura Ace WH-7701. I need to get a new groupset for the bike. We live in a totally flat area, so something like Shimano Sora is just fine. I can get a Sora, which is a 9 speed. But will that be compatible with the Dura Ace? Do I need to move to at least an 11 speed? Thanks!!!