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"I don't know that it helps climbing (I think that depends on surface conditions), but it's a big deal on descents.  Or at least obvious to my low level of skill/experience that it's advantageous.\n \n\n\n\tMy brother is a big proponent of low PSI, and he's always been way ahead of where I'm at with bikes so I listen when he chimes in on that kind of thing.\n \n"
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