Got a reply from Scott, putting here for search ability:
Scott Damper mounting 54mm spacing M6x20 bolts.
They have a under bar mount that “almost” fits, could be made to work with a drill and 5 minutes, part number 100 40 43.
Also for search, straight from their mouth: there are only two versions, dirt and street. SCOTT dampers are identical inside regardless of which bike they go on, so the weight being controlled won’t be an issue.
They may have a headstock clamp with pin mount that will fit, sending them some measurements for that part tonight.
The Triumph TT600 kit is no longer available to purchase