The Mach Bike moves faster than the Acro Bike, although it starts off slowly at first, but it can pick momentum, allowing it to climb up muddy walls.
The Acro Bike is same as the normal bikes, however, it can do acrobatic acts like hopping on the ground. It can also allow users to hop up a hill (example: Jagged Pass) and jumping sideways on a plank (example: Route 119).
Generation IV - The bicycle can be obtained from the owner of the Bicycle Shop by rescuing his Pokémon from the Galactic building in Eterna City . The bicycle have two gears of different speed - normal and fast. Press the 'B' button to change gear. The bicycle can ride on wooden planks. And at fast speed, it can climb muddy walls.
Generation V - the player receives his/her bicycle from the Day Care Man in Nimbasa City after defeating Team Plasma.
Generation VI - The player receives a bicycle from the bicycle shop in Cyllage City after answering a simple question. The player can choose between a green or yellow bicycle. The color cannot be changed after it is chosen.