From the Super Mario Wiki
The Swooper (known as the Swoop in the British English version) is an unlockable glider part in Mario Kart 7. As its name states, the Swooper is shaped like the Swoop enemy. Just like the Paraglider, it offers an acceleration boost, while hindering weight, but like all the other gliders, it allows karts to go airborne for a brief time period.
It returns in Mario Kart Tour where it is classified as a High-End glider. A gold version also exists in the game, simply named the Gold Swooper, which shares the same High-End classification. Players that use this glider will receive more points upon hitting other racers with Bob-ombs.
Mario Kart 7
Mario Kart Tour
Names in other languages