Originally Posted by
rtay
Has anyone experienced back ache on a new bike but gradually getting accustomed to it?
I don't think so; I wouldn't mess around with back issues. Adjust the bike to be more comfortable, or ride a different bike.
The thing is, back injuries can take years to fully heal, even just if it was a "strain" type injury to begin with. Its probably a simple fit issue, so best to let an lbs figure it out, and soon.