Effect: Use to move faster than walking or running. Slower than the Mach Bike, but can perform tricks. Can be used to ride on Cycling Roads.
Secondary effect: Can be used to side-jump between rails and bunny hop along bumpy slopes.
Cycling Roads:
Seaside Cycling Road, an overhead path built over Route 110 in central Hoenn.
Rails:
In Hoenn rails are mainly found on Route 119.
Bumpy Slopes:
These slopes, which are only seen in Hoenn, can only be climbed with an Acro Bike's bunny hop trick. This feature is mainly in Jagged Pass and the Safari Zone.