Crucially, Deluxe removed the bizarre weight-class restrictions of previous games. You can now put any combination of wheels, gliders, and karts on any character. The meta has settled (Waluigi on the Wiggler kart with Roller tires is famously broken), but for casual players, creating a Frankenstein monster of a kart is half the fun.
Mario Kart 8 Deluxe is a high-speed racing game developed and published by Nintendo for the Nintendo Switch console. Released in 2017, it's an enhanced version of the original Mario Kart 8 game, which was launched on the Wii U in 2014.
If you meant something else (like a specific vehicle part like the "Propeller" kart or a typo for "Pipe Frame"), please clarify!