These handlebar crossbars are used for creating custom handlebars. The inside dimension is 2.5" and is designed to be used with the 3.5" spaced risers and 1" diameter handlebars.
Pair this with our handlebar bosses to create your own bars. https://prism-motorcycle-co.squarespace.com/store/weld-in-handlebar-risers
Email us for custom crossbar pricing. firstname.lastname@example.org