Let me just say, holy mother of God, why am I a dummy and not go this route sooner. ISIS crank and UHD freewheel, match made in heaven. Not even a pig hair of movement from anything. Nothing at all. My lordie mortie I need another one of these. Yeah ik you though I was going to say 40. I'm drinking cans right now. An a little sauced up, but I got it done. To buzzed to ride though, and it's almost midnight. ISIS and UHD freewheel is the ticket!!!! Soon as I get my rear sturmeys hub made up, I doubt this bike will need anything but regular maintenance for a long long time. This match up is solid as all can be!!! An I am sauced up and got it all installed. I pedalled it in the shop a bit. But again, sauced up and not going to go ride. Y'all need to try this combo, built tougher than Karen, and a lot better looking too!!! Oh and I know I'm sauced up, cause I slipped going down the stairs on my third trip for some beers. Lol, it's ok though, I saved the beers!!! They were unharmed. But my arm and butt got damaged. Lol