First in Eterna City you have to visit The Team Galactic Mars Building by a Bicycle Shop First find him save him and go in the bike shop he Should give you a bike then go to the place where is says sorry you need a bike it is where you get the Experience Share.
From Eaterna city
Firstly, you must have made it through Enterna Forest and to Enterna City. Starting from the Pokecenter, walk South until you see a shop with bikes on the right hand side. This is the bike shop. Before you can actually get a bike, you must have the Feild Move Cut, a Pokemon that knows it and the Enterna Gym Badge, then you must head to the Galactic Building in Enterna City and defeat Team Galactic.
at enterna city
Ok, go to Enterna City. Beat the gym leader. Get the HM cut. use cut on 1 of the 3 plant outside a building that's blue with spikes on the side. Beat team galactic in there. Save the Pokemon. Go to the bike shop. You then gt it free when you talk to the guy in there, not the kid at the table, the guy.
In Eterna city after you rescue the bike shop owners Pokemon from team galactic
eterna city but first you gotta rescue the bike seller at the team galactic building (north of the city) and you need cut to get in there
When you are done seeing Commander Jupiter in Pokemon Diamond talk to the man in the room. He'll say that he is the owner of the bike shop. Go see him in the building with a lot of bikes around it and he will reward you with a bike. Hope this helps.
After you receive the PokeRadar from Professor Birch, go into grass without a bike and select it from your KEY ITEMS.
you have to go back to Jubilife City,then you go to Florma town then you go through Eterna forest and get to Enterna city................ If you have already been to enternea city and have gotten the bike you just go through cycleing road.hope it helps
If you mean the Acro Bike and the Mach Bike, you can't get it in Pokemon Pearl.
The bike shop is in Eterna City.
The eterna city bike shop.
No, unfortunately you can't get another bike.