Originally Posted by
rigidan
So I've just got a sweet bike in my size but I'm coming from an upright MTB. My lower back kills after a while but looking at pictures the fit is alright. Little tweaks help.
Is this muscle issue that I will just have to build up over time?
Yes. I've kind of let my core work go a bit over the past few months ... cycled up a mountain last Sunday ... and oh, my aching back. Gotta do the core work.