31.8? 26.0? 25.4? Yeah, we've got a shim to make your handlebars and stems get along.

QBP # Product Name Thickness Material Length Conversion
SM1069 Handlebar Shim 0.6mm Stainless   25.4 to 26.0mm
SM3002 Handlebar Shim 3.2mm Alloy 38mm 22.2 to 25.4mm
SM5316 Handlebar Shim 6.4mm Alloy 48mm 25.4 to 31.8mm
SM5317 Handlebar Shim 5.8mm Alloy 48mm 26.0 to 31.8mm