I have some Rox 2" Pivoting Handlebar Risers for 7/8" handlebars. They fit a 7/8" mount and also take a 7/8" handlebar.
Here is a link to the product page, the are the first ones on the list. They are natural aluminium colour. Part code shown on the packaging is: 1R-P2SSN.
I bought them for the Wee, at the time I had some Goodridge brake hoses which were shorter than standard (that's a whole other story best left untold...) and couldn't use the risers. So all they've ever done was to get fit and then removed when I realised the Goodridge hoses were too short. They have since been lying around in my garages. I recently bought some Renthal handlebars and won't need the risers.
£60 gets them delivered to any UK mainland address. Payment via Paypal as a "gift". PM me if you are interested.