Replace the seatpost with a standard non-suspension seatpost. Carbon will save a few ounces. You could save more than that by cutting back on your portion size at supper for a few days.
You could also move up to 700x23 tires. That would save a few ounces too.
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The Lord is merciful and gracious, slow to anger and abounding in steadfast love. - Psalm 103:8
I am a cyclist. I am not the fastest or the fittest. But I will get to where I'm going with a smile on my face.