I have two of these now first one I put on my Surly LHT.The sec one I put on my touring/road bicycle I built myself this one has 700c wheels and it is fast.My LHT has 26" wheels on it and I keep it loaded down all the time and it is easy to go up hills with this new setup.I run 26,36,46t chainring on both bicycles and this gives me all I need.I am very happy with both of them.