Mach Bike appears in 7 version groups since Generation III, a Gameplay item in the Key Items pocket
PokéAPI item 527 of 2,223, Gameplay category, Key Items pocket
Effect, in PokéAPI's words
Mach Bike: “Faster than the Acro Bike, and can ride up sandy slopes and across cracked floors.”
Increases movement speed outside or in caves. Faster than the Acro Bike. Allows the trainer to ascend muddy slopes.
Games
Mach Bike is listed in the text of 7 version groups, first in Generation III
Game index by generation
IIIIIIIVVVIVIIVIIIIX
Named in
Ruby and SapphireEmeraldFireRed and LeafGreenSun and MoonUltra Sun and Ultra MoonLet's Go Pikachu and Let's Go EeveeSword and Shield