I'm just under 6' 2" and recently got a Large transition patrol. I'm right on the cusp of needing an XL frame. Anyway, I had a Large patrol before and am noticing now as I did then that my lower back gets really tired after a good intense downhill session. My back feels fine pedaling up and around.
I recently had a Large Santa Cruz Chameleon and didn't notice back pain at all. I'm guessing I'm riding quite a bit harder with the full suspension now.
Anyway, I can't quite figure it out. Is there something about the enduro geometry + a frame size that would lead to downhill-induced lower back fatigue/pain? Any thoughts?
I might just need to strengthen my core a bunch. It's odd. I haven't had back pain except with this.