A kit, comprising a self-propelled two-track stilt vehicle, especially for agricultural and forestry applications, and a trailer used to transport the stilt vehicle and having a cargo bed, with the following features: - The stilt vehicle comprises a running and carrying structure provided with four wheels (10.1, 10.2) and having a front transverse structure (11.1) oriented transversely relative to the travel direction and a rear transverse structure (11.2) oriented transversely relative to the travel direction; - two front stilt structures (12.1) are disposed on both sides at the end of the front transverse structure (11.1) and two rear stilt structures (12.2) are disposed on both sides at the end of the rear transverse structure (11.2); - wheel-carrying units (8, 9) that carry respectively at least one wheel (10.1, 10.2) are disposed on the stilt structures (12.1, 12.2); - the front and rear transverse structures (11.1, 11.2) are respectively constructed in multiple parts having a middle piece and a left and right end piece, which can be fixed thereon in various width positions and to which the respective associated stilt structure (12.1, 12.2) is connected; - the stilt structures (12.1, 12.2) are respectively constructed in multiple parts having a primary part connected to the associated end piece of the transverse structure (11.1, 11.2) in question and a second part, which can be fixed thereon in various height positions and on which the associated wheel-carrying unit (8, 9) is disposed; characterized by: - no positioning drives are provided that bring about a change of position of the secondary parts and of the primary parts of the stilt structures (12.1, 12.2) of the stilt vehicle relative to one another; - a lifting device, braced on the trailer, is provided that acts on central elements of the running and carrying structure of the stilt vehicle. - The stilt vehicle comprises a running and carrying structure provided with four wheels (10.1, 10.2) and having a front transverse structure (11.1) oriented transversely relative to the travel direction and a rear transverse structure (11.2) oriented transversely relative to the travel direction; - two front stilt structures (12.1) are disposed on both sides at the end of the front transverse structure (11.1) and two rear stilt structures (12.2) are disposed on both sides at the end of the rear transverse structure (11.2); - wheel-carrying units (8, 9) that carry respectively at least one wheel (10.1, 10.2) are disposed on the stilt structures (12.1, 12.2); - the front and rear transverse structures (11.1, 11.2) are respectively constructed in multiple parts having a middle piece and a left and right end piece, which can be fixed thereon in various width positions and to which the respective associated stilt structure (12.1, 12.2) is connected; - the stilt structures (12.1, 12.2) are respectively constructed in multiple parts having a primary part connected to the associated end piece of the transverse structure (11.1, 11.2) in question and a second part, which can be fixed thereon in various height positions and on which the associated wheel-carrying unit (8, 9) is disposed; characterized by: - no positioning drives are provided that bring about a change of position of the secondary parts and of the primary parts of the stilt structures (12.1, 12.2) of the stilt vehicle relative to one another; - a lifting device, braced on the trailer, is provided that acts on central elements of the running and carrying structure of the stilt vehicle. - no positioning drives are provided that bring about a change of position of the secondary parts and of the primary parts of the stilt structures (12.1, 12.2) of the stilt vehicle relative to one another; - a lifting device, braced on the trailer, is provided that acts on central elements of the running and carrying structure of the stilt vehicle.