12 profiles (two 40 × 160 base profiles), the end plates, the seat frame plates, the pedal deck, its two brackets and its heel rest, the brace plate, the wheel mount of the chosen version, the hardware and the rubber feet.
Build My Rig guide, not affiliated with SIMGASM. Parts, dimensions, order and hardware taken from manual v1.3, the shapes and sizes it does not give read off its drawings; check every step against the paper manual in the box.