Just bought myself one of these, to fit the Road Rocket...
And here is one fitted to a Goldstar (not mine)
Right I suppose you want some info?
It is a Bob Newby clutch, from
http://www.bobnewbyracing.com/and I hope this will be the first and last time you get to see it, as it will be sealed away tomorrow (
such a shame) in its oil free enviroment.