You can't. After you beat May go to Mauville City (which is the next city) and go to a shop called 'Rydel's Cycles'. Talk to him and he offers you either an Acro Bike (Gos slower but you can do tricks and make good turns) or a Mach Bike (Gos real Fast!!!)
You can get it in the bike shop in Mauville City.
=No, But there is a Battle Tower there. The battle frontier was added only to Emerald Version, and therefore is Completely unaccessible to ruby/Sapphire Version. Sorry.=
yes
You go to slateport city and walk up underneath the bike track where you verse your rival and battle some oither battlers.
your right but you need the mach bike not the acro bike because i do it with the mach bike and works for me.
no only in emerald
no
Pokemon Ruby and Pokemon Sapphire do not have the Battle Frontier, instead they only have the Battle Tower. It was not until Emerald version that the Battle Frontier was added to the game.
In the safrai zone, I think you'll need an acro bike....... to get there...
sadly enough....there isnt one in ruby or the other one. there is only a battle frointer in EMERALD version (i know it stinks doesnt it) ):( ^-^
The Acro and Mach bikes are only in Ruby, Sapphire and Emerald. There's only one bike in Crystal and you can get it in Goldenrod
the same way u get to mirage island in sapphire and ruby