Decks first. "Premium exotic-wood" is the description the roster uses, and in fingerboarding that phrase carries specific weight: veneers chosen for figure and color rather than for whatever the press run can be fed cheaply, layups where the species is part of the product and shows on the top and the sides. What the material does not tell us is which species, how many plies, which widths and molds, or whether the exotic-wood description still describes the current catalog as accurately as it described the early one. A brand that has been pressing wood since 2007 has almost certainly changed shapes, and possibly changed what it puts in them. Treat the description as accurate to the roster and unverified for the present day.
Then trucks. Yellowood developed YTrucks as a subsidiary, and YTrucks has offered signature pro colorways. That is a small sentence carrying a large amount of unrecorded history. We do not have a founding date for YTrucks, a first-release date for its trucks, the formal corporate relationship between the two names, or the riders and years attached to the signature colorways. All of that is exactly the kind of detail that ought to be nailed down with dated primary evidence rather than reconstructed from memory, and we are saying so rather than quietly rounding it off.
What the structure itself tells you, though, is real. A deck brand that builds a truck line is making a choice about the whole setup. Wood and metal are different problems — one is veneer, glue, press, sanding; the other is machining, baseplate geometry, axles, bushings, and the tolerances that decide whether a hanger grinds a ledge edge or hangs up on it. Most brands in this scene pick one and buy the other. Yellowood picked both, and gave the metal its own name.