One of the guys on the RD forum sent me this link, its what I am looking for but may not be any good for you Andy? also there is a link on the RGV forum and there was a GSXR and an RGV with these as standard they used a rivited on mounting post that may be of use to you?

http://81.27.97.6/meadspeed/products/index.asp?ECommerceDisplay=TheProduct&catId=596&NoCache=25/08/2007%2022:53:36

Completly unrelated but I found a lovely ali quick action throttle while searching for the clips. Its an RS site so you guys probably know about it already.

http://www.iane.co.uk/hondaR125.html#chassis