If you think you feel a difference, then you'll feel the difference.
Can't see why you wouldn't want to go for 170, only change you need to make is probably lowered the saddle a tad.
@edscoble started
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If you think you feel a difference, then you'll feel the difference.
Can't see why you wouldn't want to go for 170, only change you need to make is probably lowered the saddle a tad.