Sorry Derek but do you mean cassette, most up-to -date freewheel hub bodies will carry 8/9/10 you could run 7 if you cared for that you just run a spacer on the hub to take up the extra space. I am trying to remember how the chain is, I do know one for a 11 is narrow but want to say that is the next step and one chain should work for the other three. As stated before, I drank the single speed KOOL-AID so I would say if you really want a 1x? I would do no more than a GOD I want to say 8 but I bet you want to go big so 9. I know from Neo’s post he really likes 7 . I take it you have been checking out up-to-date top end bikes, they are set up with two in the front because of less weight and the fact that there is no need for three on the front for somebody in shape and more than likely racing, bet that came from the single speed fad which showed the super low gears are a waste of time when you can just man the bike up the climb or get off and run up the hill faster than spinning low gears.
