I know
at mt. pyre
Evolve Snorunt. Snorunt can be found in Shoal Cave Ice Room
There is not a bike voucher in Pokemon sapphire
Safari Zone - the area where you need an Acro Bike to get to.
I think a Pikachu from Safari.
The Bike Shop...........
There's a bike shop in the city with the electric gym. Go inside, talk to the shop owner and choose your bike (mach or acro).
you can't get the black flute in leaf green but you can in Pokemon ruby, sapphire and emerald then trade it to leaf green.
you need to go to Mauville to get a bike an Acro bike or a Match bike
Mauvile city at the bike shop.
Only the acro bike can do tricks.
Go to Mauville City and ask Rydel for a bike.