Problem Solvers Handlebar Clamp Shims allow a smaller diameter handlebar to be used in a stem. This kit converts 22.2mm handlebars (standard BMX size) to a 31.8mm stem (most common road and mountain size).
For Handlebar Diameter: 22.2mm (BMX)
For Stem Clamp Diameter: 31.8mm (Mountain or Road)
This product is expected to become available for purchase on Sunday, September 12, 2021