Higher Handlebar Help--Stems or what?
So my bike and I are bonding, but my lower back isn't liking it. I'm riding to get back into shape. Given my location my daily ride is on roads, but I do like to get dirty on the weekends and hit trails.
I've adjusted the seat so that I'm able to reach the pedals properly, but now I think I need to raise the handlebars as my lower back is aching after even short rides.
With 1.5 inches worth of spacers under my stem, the bike shop says my steerer is as high as it will go and is suggesting either an extender or adjustable stem. I've known people who have broken these and they were much smaller than I am (340 lbs 6'4"), so I'm not too crazy about these options.
Does anyone have an idea on whether replacing the bars or stem would be a wiser idea? I'm fairly mechanically inclined, but I'm curious about the difficulty level in replacing the stem.
I ride a Trek 4300. Outside of the saddle, all parts are currently stock. Ideally, I'm looking to raise the bars another inch. The current reach to the handlebar is fine, but if its a little less I won't mind that either.