The Mach Bike.
Go to the bike store in Mauvile city
You Can Aquire Either An Acro Bike Or A Mach Bike In Mauville City At Rydel's Bike Shop.
In mauville city
get the acro bike by ridel and hold the B-button
Use the Acro bike and hit "B" key and the up or down key at the same time
use the acro bike
The Acro bike.
The Mach Bike.
Go to the bike store in Mauvile city
get a bike
You Can Aquire Either The Acro Bike Or Mach Bike In Mauville City At Rydel's Bike Shop.
You Can Aquire Either An Acro Bike Or A Mach Bike In Mauville City At Rydel's Bike Shop.
There is a bike shop in Mauville, east of the Pokemon Centre. Talk to Rydel (the owner) and chosse your bike!
In mauville city
There are actually two different bikes in Pokemon Emerald, the Acro and the Mach bike. You can obtain either one of them (but not both at once) in Mauville City.
you have too be under the bridge on the bike route with Pokemon emerald in your ds.