The Junkers Profly Ultima is a German aerobatic homebuilt aircraft that was designed by Andre Konig and produced by Junkers Profly of Kodnitz, introduced in 1993. When it was available the aircraft was supplied as a kit for amateur construction.
By January 2014 the aircraft was no longer offered by the company.
The Ultima features a cantilever low-wing, a two-seats-in-side-by-side configuration enclosed cockpit under a bubble canopy, fixed tricycle landing gear with wheel pants and a single engine in tractor configuration.
The aircraft's span wing mounts flaps and has a wing area of . The cabin width is . The acceptable power range is and the standard engine used is the Rotax 912UL four stroke powerplant. For its aerobatic role the Ultima is stressed to +6 and -4 g.
The Ultima has a typical empty weight of and a gross weight of , giving a useful load of . With full fuel of the payload for pilot, passenger and baggage is just .
The manufacturer estimated the construction time from the supplied kit as 400 hours.