"Tell me more about your gear set up, I need to know because I'm planning on putting gears on mine when I get it. What mech, shifter and chain are you using? How many of the cassette rings are you actually using, if so, what issues did you have with getting the shifter to work properly with it? I've got more questions but I might ask those later. " Well its a 16tooth tensile freewheel on the front with a 12/16 six speed block on the hub. Most cassettes you can dissassemble and remove the cogs you don't want. If you cant figure it out just ask you local bike shop for advice. The exact spec is on the page linked to Why do I run gears? Well if I'm riding Tails with the crew then Trial ratios are WAY to low... at the same time park and street you'll need something more flowy than power move gears.