Flyers have an extraordinary amount of tech. Examples: Communications, Life Support (including reclamation tech for reprocessing pilot waste), Composite Materials, Avionics, Propulsion (with types of fuel), Navigation (including short range Radar), Tracking Modules(used by Race Officials to map flyer movement), Computers, Neural Interfaces, Exotic Metals, Low Density Structures, Batteries, etc.
For each alien species in the race, you can expect one (or more) different flyer makes and models. Assuming you have five alien species flying, it's conceivable that each species brings to the table at least three different models, providing a varying wealth of the above technologies, and all considered Legal tech.
Legal tech, per the unfortunate demise of unlucky racers, was generally salvageable (to a lesser degree anyway) by the locals. If only for ornamental decoration, the inhabitants scavenged this substandard tech to adorn their vehicles, dwellings, etc. Of course some of it too, did manage to survive.