Rear disc conversion adapter

Nothin-fancy

Retro Guru
I'm trying to find a vintage rear disc adapter and can't remember the name of it. It had the uniball joint(?) that went on the cantilever boss and had an adjustable bar that went down the seat stay to the adapter plate at the rear dropout.

I can't remember the name of it and all my Google/eBay/retrobike searches just bring up either a flat to side mount disk adapter, how to weld braces and tabs on the rear stay of your bicycle or those cheap sketchy looking bolt on ones.

Any help would be appreciated.
 

This one?

I remembered it being sold by Rock and Roll bikes but I think it was also available under another brand name at one point.
 
Back
Top