CB500 race and track

Hi Folks,

I'm new to this forum and have come here to see if I can find a solution to a small problem.

I have a CB500 that's only used on track.
For track use I need some spare parts, specifically, rear sets.

There are some UK made rear sets that almost every UK racer and track rider fit to their CB500s. I need help locating a set.
 Can anyone point me in the right direction?

These are pricey but seem to be what you are after
https://www.sesraceproducts.com/fixed-rearsets---honda-cb500-94-03-race-shift--rsh024-332-p.asp
and
https://www.ebay.co.uk/itm/231477937909

Thank you