In order to box a bike for safe and economic shipping we remove the Handlebars, Front Wheel, Pedals, Seat and Seat Post. Then we place it in the smallest possible box with reinforced sides. Please note that we DO NOT ship bicycles but we are happy to point you in the right direction. The typical size of an adult bikes box is 52x9x29 at an average weight of 40lbs. But some bikes will need a bigger box