Originally Posted by
Koroviev
None of it makes a difference. Worry about saddle weight when there's no excess weight left on your body and you desperately need a 0.8% performance increase in the high mountains, i.e. never.
It all makes a difference. Grams here and there all add up. Take 3-4lbs off a bike and it will be measurably faster, particularly climbing, and accelerating.
It won't make as big of difference as many people would like to believe, but it does make a difference.
And "the don't worry about the bike's weight, until there's no excess weight on your body" is a false choice. No reason you can't put yourself and your bike on a diet.