The GT450 is named for its maximum takeoff weight of 450 kg (992 lb). The aircraft is equipped with a flexible wing with Trilam leading edge and a Kevlartrailing edge. The wing can be trimmed from 55 to 82 mph (89 to 132 km/h). The aircraft is equipped with a 80 hp (60 kW) Rotax 912UL or optionally a 100 hp (75 kW) Rotax 912ULS, both with electric starters and a 65 l (14 imp gal; 17 US gal) polyethelene fuel tank mounted under the seat. Dual hydraulic rear wheel disc brakes with a parking brake feature are standard. The cockpit fairing is made of fibreglass.