Can I still purchase a STAC Zero Halcyon, Base model or Powermeter model? November 14, 2019 17:07 Updated Follow No, all STAC Zero models are now out of stock. See also: How is Fliiiight different from the STAC Zero Trainers? Related articles Will 4iiii continue to support my STAC Zero trainer? Upgrading to Fliiiight FAQ Does Fliiiight detect cadence? Will a firmware update allow me to enable Fliiiight's Virtual Inertia for my STAC Zero Halcyon? Comments 0 comments Please sign in to leave a comment.