A bicycle drop out comprising a seat stay mount having a first receiving portion, a chain stay mount having a second receiving portion, a back plate releasably connected to the seat stay mount and the chain stay mount, the back plate comprising a first member for engaging the first receiving portion and a second member for engaging the second receiving portion, the back plate comprising a third slot for receiving an axle, the slot cooperatively disposed between the seat stay mount and the chain stay mount, and the seat stay mount and the chain stay mount having a gap therebetween for receiving a belt.