I've never seen any. It might be possible as you have the two brackets on either side of the frame that bolt onto the cylinder head and the frame, but I can't remember if they are hidden behind the fairings or not...
They are simi-hidden, but a hole in the farings would be worth it if their strong enough to withstand a slid
There's some selling on ebay, pictured on an FZR1000 ? https://www.ebay.com.au/itm/YAMAHA-...976401?hash=item4d60c48fd1:g:nSsAAOSwjL5ZHV~f And these- https://www.ebay.com.au/itm/YAMAHA-...544664?hash=item36262a5d98:g:TzgAAOSwd4tT92Np