Figure the percentage change of the total bike and rider. If the total is 200, then 2 lbs is 1 percent and it's only helpful when climbing. After riding long mountain climbs for the last 7 years, I don't think that anyone can really feel a 1 percent change. If I'm going up a tough climb a 12mph, 1 percent it .12mph. There's a lot of imagination involved in feeling those small changes.