This MTB / ATB adapter is a smart solution for mounting your Urban Iki seat on sports bikes. With the adapter you can easily mount an Urban Iki front seat on bicycles with a front fork tube with a diameter of 28.6 mm (1 1/8 inch). Just like all Urban Iki products mounting is simple and quick. The adapter also comes with an extension to add the windshield, and if you dont want the shield then theres a little cap supplied to cover the mounting system keeping things nice and neat.