Trek 3900/4300 2008 weight?

Question

i'll do an upgrade to my bikes, so i need to know how much weight remove it. i've been looking the web but i don't find nothing.

who really know the bike weight or its components?

i hope most accurate possible answers.

Answer 1

Here's a much easier and less expensive way to reduce your combined (bike and rider) weight:

Take a good dump before heading out on your ride. If nothing else, you'll feel better.

In all seriousness, unless you're riding some pretty serious hills, bike form and proper technique will have much better paybacks than shaving a couple ounces off your bike.