would this be of any use to you?
They are about 24" length.
Azonic O’Neal Double Wall Flat Handlebars 63cm 25.4mm Clamp 3° Retro | eBay
<p dir="ltr" style="margin-top:0; margin-bottom:0;">Silver Azonic O'Neil Double Wall flat handlebars 25.4mm Clamp just over 630mm in width (uncut). Have some marks from use as to be expected and crimping of the ends from fitting of bar ends. </p>www.ebay.co.uk