You probably want to talk to other BF owners. I hear they have a good user forum, dunno. Shaving weight off of a folder is not a serious endeavor; expensive with no gain. Easier, cheaper, and far better to reduce the weight of the engine.
The success of mass reduction can be assessed by comparing two ratios: After Weight over Before Weight and Total Cost over Initial Cost. Let's just say you spend $600 to reduce the mass by two pounds, the cost of the bike (by replacing perfectly good parts) has increased to 130-140% but the mass has been reduced to only 95-90%. If you consider the total mass as your bike, your stuff, and you, 220-250 pounds, loosing 2 or even 5 pounds off the bike is insignificant
If you take 20 pounds off your body mass, you've reduced the total package by maybe 5-10% but you haven't spent any money and you're going to feel and ride much better.
We used to say ti and carbon parts ran $400-600 a pound. That has come down a bit with the successful introduction of many more lightweight parts. Light can also mean fragile but not always, and that's a negative aspect for touring.
If you have the money to spend, get a lighter bike. If you must have a folder, the weight of the bike is one of the prices you accept for the convenience.
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