Ra8
There is Beirut By Bike in Ain el Mraisse.
There was (I don't know if he's still there) in Antelias under the bridge in the Sea-side road.
There were also a few places in Jounieh near ATCL (on the long road between ATCL and Malak el Taouk). Also check about that because I don't know if they are still there.